Tag: sustainable-agriculture

Texas Organic Agriculture: Expanding from Farm to Market

The Texas organic industry continues to grow on both ends of the supply chain—from the farms that grow organic crops and livestock to the companies that process, package, and distribute them. As of October 2025, the state lists 412 certified organic grower operations, including farms that produce crops, livestock, and wild crops on 512,000 Texas acres. At the same time, the number of certified organic handlers—processors, distributors, and packers—has climbed from 457 in 2023 to 694 in 2025, a 52% increase in just two years.

Who’s Growing Organically in Texas

Organic production in Texas is anchored by key field crops such as cotton (175 farms), peanuts (147), and wheat (132)—mainstays of the High Plains and Rolling Plains, where organic systems are well adapted to semi-arid soils and rotations. Corn (51) and sorghum or milo (49) are part of diversified feed and grain operations, while rice (25) remains strong along the Gulf Coast. Forage crops like alfalfa (25) and grass (40) support both organic livestock and soil health, while vegetable operations (21) range from small local farms near urban markets to large commercial producers serving regional buyers.

Among these 412 operations, 28 are certified for livestock, including 20 cattle and 8 poultry operations. The cattle operations include both grass-fed beef and organic dairy systems, emphasizing rotational grazing and homegrown forage to meet organic standards. The poultry farms focus mainly on pasture-based egg and broiler production, serving local and specialty markets. Together, these farms show how organic agriculture in Texas is evolving into an integrated system linking crops, forages, and livestock within the same ecological and market framework.

A Rapid Rise in Certified Handlers

The sharp increase in certified organic handlers—from 457 to 694—signals strong momentum beyond the farm gate. Much of this growth is tied to the USDA’s Strengthening Organic Enforcement (SOE) rule, implemented in 2023. This rule requires certification for more middle-market entities such as brokers, traders, and distributors who take ownership of organic products. The result is a more transparent and traceable supply chain, but also a measurable expansion in the number of certified businesses operating within it.

Texas’s 694 organic handlers now represent a wide range of activities. The largest sectors include fruits and vegetables (285), beverages (125), grains, flours, and cereals (105), nuts and seeds (111), seasonings and flavorings (102), and oils and oleoresins (71). These categories show that Texas’s organic sector is growing not only in raw production but in value-added processing, product manufacturing, and consumer-ready goods. Additional activity in livestock feed (23), dairy and dairy alternatives (27), meat, poultry, and eggs (35), processed foods (47), and fiber, textiles, and cotton (20) rounds out the picture of a maturing organic industry.

A Strengthening Organic Ecosystem

The combined growth in organic growers and handlers marks a new phase for Texas organic agriculture. Producers are supplying more raw organic commodities, and a growing network of handlers is processing, packaging, and marketing those products—creating a more complete and resilient organic system. The enforcement of SOE has helped formalize this network, ensuring that products remain traceable from farm to table. What was once a scattered mix of farms and processors is now forming into a connected supply chain—one capable of supporting long-term growth in the Texas organic market.

Smart Sensing in Organic Systems: How Drones, Satellites, and Sensors Help Detect Crop Stress Before It Happens

Smart sensing is transforming how we understand plant health in organic systems. By integrating satellite and drone imagery, in-field sensors, and artificial intelligence, we can now detect stress in crops long before symptoms appear. This technology doesn’t replace the farmer’s eye—it strengthens it, helping us protect soil biology, use resources more wisely, and make better management decisions.

Learning from Students and Staying Curious

This past Saturday (October 18), a group of high school students invited me to speak about their project on smart plant monitoring. They were designing a device to track plant health in real time. Their questions—about soil, light, and water—were sharp and curious. It reminded me why I love this field: whether we’re students or seasoned farmers, we’re all learning how to listen to plants a little better.

Their project also made me reflect on how far we’ve come. When I started in Extension, plant monitoring meant walking fields, taking notes, and maybe digging a soil sample. Now, we’re using satellites orbiting hundreds of miles above the earth and sensors no bigger than a pencil eraser to understand how crops respond to their environment.

From Satellites to Soil: The New Eyes of Agriculture

In organic production, timing is everything. A crop under stress can lose days of growth before we even notice it. But RGB drone and satellite imaging now allow us to spot stress early by detecting subtle changes in leaf color, canopy density, or reflectance.

Even more advanced are multispectral and hyperspectral sensors, which measure how plants reflect light across visible and infrared wavelengths. These patterns can reveal water stress, nitrogen deficiency, or disease pressure—well before a plant wilts or yellows.1

Thermal cameras add another layer. Drought-stressed plants reduce transpiration, causing leaf temperature to rise—a change that infrared sensors can detect long before visible damage occurs.2

Once the imagery is captured, we still rely on ground-truthing—walking to the coordinates, checking the crop, soil, and often pulling tissue samples. This blend of technology and touch keeps data meaningful.

Predictive Systems: Seeing Stress Before It Starts

The most exciting progress in recent years has been predictive capability. AI-powered analytics now integrate drone imagery, IoT soil data, and weather patterns to learn what “normal” looks like for a crop. When the system detects deviations—like a drop in chlorophyll fluorescence or a rise in leaf temperature—it flags them early.3

One powerful method is solar-induced chlorophyll fluorescence (SIF), which measures photosynthetic efficiency. Subtle declines in fluorescence intensity can indicate stress from drought, salinity, or nutrient imbalance days before the plant shows visible symptoms.4

Meanwhile, IoT sensor networks are spreading across fields. These small devices monitor soil moisture, pH, canopy temperature, and even sap flow, sending real-time data to cloud dashboards that can automatically adjust irrigation schedules.5

This isn’t just smart—it’s proactive agriculture.

Image acquisition setups using different sensors (i) DJI Matrice 600 Pro with a Sony Alpha 7R II, 42.4-megapixel RGB camera mounted on it(Sapkota, 2021), (ii) A close-range laboratory imaging system with a Micro-Hyperspec VNIR sensor in controlled lighting condition (Dao et al., 2021a), (iii) HyperCam on the tripod, Fluke TiR1, Lci leaf porometer, Infragold as well as dry and wet references targets (Gerhards et al., 2016) (iv) Chamber equipped with two Raspberry Pi 3B + and an ArduCam Noir Camera with a motorized IR-CUT filter and two infrared LEDs (Sakeef et al., 2023).6

Why This Matters for Organic Systems

Organic farming depends on living systems—soil microbes, organic matter, and ecological balance. Unlike conventional systems, we can’t rely on quick chemical fixes. We need to detect stress early enough to respond biologically—through irrigation management, microbial inoculants, or balanced foliar nutrition.

Smart sensing tools help us manage that complexity. When we combine spectral imagery, soil data, and climate information, we begin to see the farm as an interconnected ecosystem rather than a collection of separate fields.

Monitoring also supports stewardship. Water-quality sensors can now detect salinity and bicarbonate buildup that harm roots over time. Linking those readings with AI-derived stress maps helps producers align soil chemistry, water quality, and plant physiology in one continuous feedback system.7

The Human Element Still Matters

Even with all this technology, the farmer’s experience is irreplaceable. Data can tell us something changed, but it takes experience to know why. Was that NDVI dip caused by poor drainage, pests, or a timing issue in irrigation?

Technology should not distance us from the field—it should bring better insight to our decisions. As I often tell growers, just as computers need rebooting, we occasionally need to “reboot” our interpretation—to align the data with what we know from hands-on experience.

A Partnership Between Grower, Plant, and Sensor

When those students asked how technology fits into farming, I told them this: smart monitoring doesn’t make agriculture less human—it makes it more informed.

The future of organic production is a partnership between the grower, the plant, and the sensor. When all three communicate clearly, we grow more than crops—we grow understanding. And in that understanding lies the future of any sustainable agriculture.

Further Reading

References

  1. Dutta, D. et al. (2025). “Hyperspectral Imaging in Agriculture: A Review of Advances and Applications.” Precision Agriculture, 26(3): 445–463. ↩︎
  2. Cendrero-Mateo, M.P. et al. (2025). “Thermal and Spectral Signatures of Plant Stress.” Frontiers in Plant Science, 16:31928. https://doi.org/10.3389/fpls.2025.1631928 ↩︎
  3. Chlingaryan, A. et al. (2025). “Machine Learning for Predictive Stress Detection in Crops.” Computers and Electronics in Agriculture, 218:107546. https://www.sciencedirect.com/science/article/pii/S0168169924011256 ↩︎
  4. Guanter, L. et al. (2024). “Solar-Induced Fluorescence for Assessing Vegetation Photosynthesis.” NASA Earthdata Training Series. https://www.earthdata.nasa.gov/learn/trainings/solar-induced-fluorescence-sif-observations-assessing-vegetation-changes-related ↩︎
  5. Ahmad, L. & Nabi, F. (2024). Agriculture 5.0: Integrating AI, IoT, and Machine Learning in Precision Farming. CRC Press. ↩︎
  6. Chlingaryan, A. et al. (2025). “Machine Learning for Predictive Stress Detection in Crops.” Computers and Electronics in Agriculture, 218:107546. https://www.sciencedirect.com/science/article/pii/S0168169924011256 ↩︎
  7. Gómez-Candón, D. et al. (2025). “Integrating Water Quality Sensors and Remote Sensing for Sustainable Irrigation.” Agricultural Water Management, 298:108072. ↩︎

Milling, Baking, Planting Organic Wheat: What Farmers Need to Know

When organic wheat growers choose a variety, they aren’t just planting seed—they’re planting bread, tortillas, and the reputation of their crop in the marketplace. That’s why milling and baking quality matter as much as yield. Extension Specialists and Wheat Researchers have been digging into an important question for growers: how do milling quality and baking quality fit into variety choice, especially for organic systems? These traits, along with protein and yield, play a direct role in what millers want and what farmers get paid for.

Milling Quality vs. Baking Quality

  • Milling quality is about how efficiently a kernel turns into flour. Seed size, uniformity, and hardness all affect milling yield.
  • Baking quality is about what happens in the bakery—how dough handles, rises, and produces bread or tortillas that buyers want.

Testing happens at several levels. The Cereal Quality Lab at College Station does preliminary evaluations, while the USDA and Wheat Quality Council conduct full baking and milling trials with multiple mills and bakeries. Every TAM variety is rated, and those scores directly influence variety release decisions.

Variety Highlights for Organic Wheat Growers

TAM 114

Mid-season hard red winter wheat prized for excellent milling and baking quality, solid yield potential, and strong adaptability.

  • Strengths: Excellent dough properties, solid straw strength, good grazing ability, drought tolerance, and winterhardiness. Moderately resistant to stripe, leaf, and stem rusts as well as Hessian fly; good acid soil tolerance.
  • Consistently appears on “Pick” lists for irrigated and limited irrigation systems thanks to its stable performance.
TAM 115

A dual-purpose variety offering both grain yield and grazing potential, with enhanced disease and insect resistance.

  • Strengths: Excellent milling and baking quality, large seed, high test weight, strong drought tolerance, and resilience against leaf, stripe, and stem rust, greenbug, and wheat curl mite (which contributes to Wheat Streak Mosaic Virus (WSMV) resistance).
  • Adapted across High Plains, Rolling Plains, Blacklands, and even Western Kansas/Eastern Colorado. Performs well under irrigation and good dryland conditions—but less reliable under severe dryland stress due to lower tillering capacity.
TAM 205

TAM 205 is a newer dual-purpose variety known for its strong milling and baking quality paired with unmatched disease resistance. It is highly adaptable across systems and is a strong option for both grain and forage.
Strengths:

  • Exceptional milling and baking quality
  • Good forage potential
  • Broad resistance (leaf, stripe, stem rust; WSMV; Fusarium head blight)
  • High test weight and large seed
TAM 113

A reliable dryland performer with good grain and forage potential, especially under stress.

  • Strengths: Solid grain yield, decent milling quality, and forage use. Early maturing with strong emergence and tillering – valuable in challenging environments. Offers resistance to stripe, leaf, and stem rusts.
  • Remaining a steady Dryland “Pick” in High Plains trials thanks to its adaptability.

Reminder: Organic farmers need to make seed purchase arrangements early (well before planting season) to ensure they have an adequate supply of untreated seed.

Protein Content vs. Protein Functionality

Farmers often watch protein percent, but researchers emphasize that protein functionality—how protein behaves in dough—is more important. While there’s no easy field test for this, variety choice remains a strong predictor.

When evaluating economics, consider total protein yield (bushels × protein percent). Sometimes a lower-yielding but higher-protein field can be more profitable than a high-yield, low-protein one.

Of course, protein levels don’t appear out of thin air. They’re the result of fertility, management, and soil health—areas where organic systems work a little differently than conventional.

Nitrogen and Organic Systems

One point of clarification: organic wheat does not suffer from a “late-season nitrogen challenge” so much as it requires planning ahead for higher yields. Excellent varieties and management can unlock yield potential, but only if soil fertility is built to support them.

  • Cover crops can provide up to 100 lbs of nitrogen per acre.
  • Manure composts from chicken or dairy sources can supply around 40 lbs of nitrogen per 1,000 lbs applied.
  • These are slow-release, biologically active forms of nitrogen. They need to be managed in advance so nutrients are available as the wheat grows.
  • Liquid organic N sources exist, but they are generally too expensive to justify based on the modest yield increases in wheat.

This means success in organic wheat fertility comes from building the soil and feeding the crop over the long term, not chasing protein with late-season nitrogen shots. The key takeaway is that organic fertility is a long game—cover crops and compost must be planned well in advance to match the yield potential of high-quality varieties like TAM 114 and TAM 205.

TAM Varieties and Seed Saving

Beyond fertility, seed access and seed-saving rights also matter to organic growers when planning for the future. All TAM varieties are public releases and not under Plant Variety Protection. Farmers can legally save and replant TAM seed for their own use. This is especially valuable in organic systems where untreated seed availability can be limited.

Why This Matters

In conventional systems, buyers reward bushels. In organic systems, millers and bakers want quality along with yield. Understanding both milling and baking traits—and managing fertility to match variety potential—helps organic growers capture more value.

As we look ahead, TAM 114 remains a cornerstone for organic production, but TAM 205 is quickly emerging as a variety that combines yield, quality, and resilience. With the right fertility planning and variety choice, Texas organic wheat can continue to meet both market demand and farmer profitability.

By combining resilient TAM varieties with thoughtful organic fertility planning, Texas wheat growers can continue to deliver grain that is profitable on the farm and dependable in the marketplace.

Resources for Growers

Organic fertilizer – what is it, what are the rules, where do you buy it?

I get lots of general questions about what to use for fertilizer in organic agriculture. It is generally accepted that compost is good for organic, but does it have to be certified organic compost? What about manure? Can you buy some of these processed fertilizer products? What are the rules for fertilizers?

Click on any link below to scroll down!

  1. 205.203 Soil fertility and crop nutrient management practice standard.
  2. What about some of these organic fertilizers you can buy?
  3. Some newer organic fertilizers – protein hydrolysates
  4. Where do you buy this stuff in bulk?
  5. Other Resources:

205.203 Soil fertility and crop nutrient management practice standard.

The first place to start is with the National Organic Program rules and regulations.

(a) The producer must select and implement tillage and cultivation practices that maintain or improve the physical, chemical, and biological condition of soil and minimize soil erosion.
(b) The producer must manage crop nutrients and soil fertility through rotations, cover crops, and the application of plant and animal materials.
(c) The producer must manage plant and animal materials to maintain or improve soil organic matter content in a manner that does not contribute to contamination of crops, soil, or water by plant nutrients, pathogenic organisms, heavy metals, or residues of prohibited substances. Animal and plant materials include:


First let’s talk about raw animal manure, which must be composted unless it is:
(a) Applied to land used for a crop not intended for human consumption or,
(b) Incorporated into the soil not less than 120 days prior to the harvest of a product whose edible portion has direct contact with the soil surface or soil particles or
(c) Incorporated into the soil not less than 90 days prior to the harvest of a product whose edible portion does not have direct contact with the soil surface or soil particles.

Second on the list is composted plant and animal materials produced through a process. This process involves the mixing of manures generally with some carbon sources like leaves, bark, hay, hulls, etc. to create a product that is:
(a) Establish an initial Carbon: Nitrogen ratio of between 25:1 and 40:1 and
(b) Maintains a temperature of between 131 °F and 170 °F for 3 days using an in-vessel or static aerated pile system or
(c) Maintains a temperature of between 131 °F and 170 °F for 15 days using a windrow composting system, during which period, the materials must be turned a minimum of five times.

Last in this list of NOP materials are Uncomposted plant materials. This is typically what you might call mulches like bark chips, leaves, grass, etc. These are used a lot in perennial crop systems to control weeds and add fertility over time.

As you can see all of these products are from a natural source and that natural source does not have to be a certified organic source. Neither the animals or the plants that you use to make compost or just get raw manure or mulch has to be from an organic farm.

What about some of these organic fertilizers you can buy?

Let’s go back to the rules: A producer may manage crop nutrients and soil fertility to maintain or improve soil organic matter content in a manner that does not contribute to contamination of crops, soil, or water by plant nutrients, pathogenic organisms, heavy metals, or residues of prohibited substances by applying, if you follow these restrictions below.

(a) A crop nutrient or soil amendment included on the National List of synthetic substances allowed for use in organic crop production (click here for that list).
(b) A mined substance of low solubility.
(c) A mined substance of high solubility: Provided the substance is used in compliance with the conditions established on the National List of nonsynthetic materials prohibited for crop production.
(d) Ash obtained from the burning of a plant or animal material, except as prohibited in the list below.
(e) A plant or animal material that has been chemically altered by a manufacturing process: Provided, that the material is included on the National List of synthetic substances allowed for use in organic crop production.

The producer (that is you or any company that makes an organic fertilizer) must not use:
(a) Any fertilizer or composted plant and animal material that contains a synthetic substance not included on the National List of synthetic substances allowed for use in organic crop production.
(b) Sewage sludge (biosolids from a city sewage plant or from a septic tank or a mix of either source with plant material to make a compost).
(c) Burning as a means of disposal for crop residues produced on the operation: Except, That, burning may be used to suppress the spread of disease or to stimulate seed germination. We sometimes do a heat process to “sterilize” a plant material before using. Doubt you will ever need this part!

Some newer organic fertilizers – protein hydrolysates

Protein hydrolysates are increasingly recognized for their role in organic fertilization strategies, offering a sustainable approach to enhance plant growth and soil health. Derived from proteins through hydrolysis, which breaks down proteins into smaller chains of amino acids or even individual amino acids, these products provide a readily available source of nitrogen and other nutrients to plants. This process can involve enzymatic, chemical, or thermal hydrolysis methods, each with its specific advantages and applications.

Nutrient Availability: Protein hydrolysates are particularly valued in organic agriculture for their rapid assimilation by plants. Unlike synthetic fertilizers, these organic nutrients are in forms that plants can easily absorb and utilize, leading to efficient nutrient use and potentially reducing the need for additional fertilization.

Soil Health: Beyond providing nutrients, protein hydrolysates contribute to soil health. They support the growth and activity of beneficial microorganisms, which play a crucial role in soil nutrient cycling, organic matter decomposition, and the suppression of soil-borne diseases. This can lead to improved soil structure, water retention, and fertility over time.

Real Life Example: Consider a scenario where an organic farmer is growing lettuce, a crop that demands a consistent supply of nitrogen for leaf development. By applying a protein hydrolysate-based fertilizer, the farmer can provide a quick-acting source of nitrogen that is readily available for uptake by the lettuce plants. This not only supports the rapid growth of the lettuce but also contributes to the overall soil health by feeding the microbial life within the soil.

Problems? Yes, there are problems with some of these products. Nutrient availability is an issue. We have done experiments, and the product(s) may be slow to work in the plant or the actual nutrients may be lower than stated. This can be caused by a number of factors such as binding to soil or volatilization, but it does mean you need to know your source and product.

Sources: There are just too many to list! This new source for organic fertilizer is great to see but there are a lot of companies getting into this market. Just know that they are not cheap, companies can be far away meaning shipping is a big cost, and you need to know the product well. Please, please be sure that the product you are considering is OMRI approved. Sometimes these blends are with synthetic sources…….

Where do you buy this stuff in bulk?

South Plains Compost

  • PO BOX 190, Slaton, Texas 79364
  • Toll-free: 888-282-2000
  • Office: 806-745-1833
  • FAX: 806-745-1170 
  • Physical Address: 5407 East Highway 84Slaton, Texas 79364

Sigma AgriScience

  •  Office: 281-941-6944
  •  info@sigma-agri.com
  • Corporate Office
    580 Maxim Dr., Boling, TX 77420
  • Boling Plant
  • 2565 FM 1096, Boling, TX 77420
  •  Winnsboro Plant
  • 400 All Star Rd, Winnsboro, TX 75494

Morgan Bulk

  • 3075 FM 1116, Gonzales, Tx. 78629
  • Phone: 830-437-2855
  • Kerry Mobile: 830-857-3919
  • Bobby Morgan Mobile: 830-857-4761
  • Fax: 830-437-2856

7H Nutrients (Pelleted Product)

  • 8063 S US HWY 183, Gonzales, TX
  • Briant Hand
  • Mobile: 830-857-4340
  • 7hhand@gmail.com

Green Cow Compost

Microbes Biosciences (Rhizogen Granular)

Viatrac Fertilizer

Nature Safe Fertilizers

  • 5601 N Macarthur Blvd, Irving, TX, 75038
  • Main Phone: (469) 957-2725
  • Main Fax: (469) 957-2655
  • Rob Borchardt (sales)
  • Mobile: 512-850-7345
  • rob.borchardt@darlingii.com

Organics by Gosh

Earthwise Organics

Ferticell

  • Corporate: (480) 361-1300
  • Sales: (480) 398-8511
  • Fax: (480) 500-5967
  • info@ferticellusa.com
  • 5865 S. Kyrene Rd., Suite 1, Tempe, AZ 85283

True Organic Products

  • 1909 Fairhaven Gateway
  • Georgetown, TX 78626
  • Mobile (737) 403-0064
  • Corporate (831) 375-4796
  • Barret Milam-Regional Sales Representative-Texas
  • bmilam@true.ag
  • true.ag

Other Resources:

Biopesticides and Biostimulants: Innovation, Challenges, and Growth

Introduction

Biopesticides and biostimulants are at the forefront of organic agriculture, offering natural solutions for pest control and plant health. While these products have gained popularity, the industry faces both opportunities and challenges as it evolves. This post explores the similarities and differences between biopesticides and biostimulants, their regulatory landscape, and what the future holds for these technologies.

Defining Biopesticides and Biostimulants

First let’s look at Biopesticides

Biopesticides are derived from natural materials, including microorganisms, plants, and minerals, to control pests and diseases. They function through competition, antibiosis, or physiological disruption of target organisms. Biopesticides as a category are regulated by the Environmental Protection Agency (EPA) as is detailed below!

Types of Biopesticides:
  • Microbial Biopesticides: Contain beneficial bacteria, fungi, viruses, or protozoa that suppress pests (e.g., Bacillus thuringiensis Bt for caterpillar control).
  • Biochemical Biopesticides: Utilize plant extracts, pheromones, and essential oils to affect pest behavior or physiology. For example, Thyme oil or Neem oil would fit this category.
  • Plant-Incorporated Protectants (PIPs): Genetic material introduced into plants, such as Bt proteins in genetically modified (GMO) crops. These are not to be used in organic production but are considered a biopesticide.

This image above is from the EPA website for Biopesticides. Click on the image to go to the website and check on a biopesticides registration!

How a Company Determines the Need for EPA Approval for a Biopesticide

A company developing a new biopesticide must determine if its product falls under EPA regulation by assessing the active ingredient, intended use, and mode of action. The Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) mandates that any substance intended for preventing, destroying, repelling, or mitigating pests must be registered as a pesticide with the U.S. Environmental Protection Agency (EPA). A company should ask the following questions to assess if its product qualifies as a biopesticide requiring EPA registration:

  1. Does the product actively control pests, pathogens, or weeds?
    • If the product claims direct pest suppression, it is a pesticide and requires EPA approval.
    • If it only enhances plant health without targeting pests directly, it may qualify as a biostimulant and not require EPA registration.
  2. What is the mode of action?
    • If the product kills, inhibits, or repels pests, it is considered a pesticide.
    • If the product works by stimulating plant defenses or improving nutrient uptake, it may not require registration.
  3. Is the active ingredient a known biopesticide or plant extract?
    • If the active ingredient is a microorganism, plant extract, or biochemical compound known to suppress pests, it likely needs EPA registration.
    • The EPA maintains a list of registered biopesticide active ingredients, and companies should check if similar compounds are already registered.
  4. Are pesticidal claims being made on the label?
    • If the product claims pest control properties (e.g., “kills fungi,” “controls insects”), it falls under FIFRA jurisdiction and requires EPA registration.
    • If the product only states benefits like “enhances plant vigor” or “improves root growth,” it may avoid registration.

Biostimulants

Biostimulants enhance plant growth, stress tolerance, and nutrient efficiency without directly targeting pests or diseases. Unlike biopesticides, they do not require EPA registration, leading to a highly unregulated market.

That said as a disclaimer there are many biostimulants that do a good job at preventing, controlling or managing for pests in crops. They can have a dual function even though they don’t have an EPA registration – a definite grey area!

Key Categories of Biostimulants:
  • Microbial Biostimulants: Beneficial bacteria and fungi that improve nutrient uptake and plant stress resilience.
  • Seaweed and Plant Extracts: Natural compounds that stimulate plant metabolism and root development.
  • Amino Acids and Humic Substances: Organic molecules that enhance soil health and nutrient availability.
  • For a complete look at biostimulants check out this post and the many different types available. Biostimulants: The Next New Frontier

This chart above (just click on it for a larger image) shows how an ISR system works in the plant. Many biostimulants are classified as ISR’s because they are used to stimulate a plant’s defense mechanisms against many pest and environmental problems. This “primed” state may last the life of a plant or more than likely needs to be reinforced through multiple applications.

This chart above (just click on it for a larger image) shows how an SAR system works in the plant. In many cases an SAR developed biostimulant will also be labeled with EPA as a biopesticide simply because it does control specific pests in the plant while boosting the plants defense mechanisms.

Similarities Between Biopesticides and Biostimulants
  • Both are used in sustainable and organic agriculture to reduce reliance on synthetic chemicals.
  • Derived from natural sources, including microorganisms and plant extracts.
  • Improve overall plant health, either through disease suppression (biopesticides) or enhanced resilience (biostimulants).
  • Can be combined with conventional or organic inputs in integrated pest and crop management (IPM/ICM).
FeatureBiopesticidesBiostimulants
Primary PurposeControl pests and diseasesImprove plant growth and resilience
MechanismDirectly targets pests/pathogensEnhances plant physiological processes
RegulationSubject to pesticide regulations (EPA, OMRI)Less regulatory oversight, often considered soil amendments
Mode of ActionAntibiosis, competition, parasitismHormonal stimulation, nutrient uptake efficiency
ExamplesBacillus subtilis for fungal disease controlSeaweed extracts for drought tolerance

Industry Challenges and Regulatory Considerations

One of the biggest challenges in the biostimulant industry is the lack of clear regulations. While biopesticides undergo rigorous EPA evaluation, biostimulants can be marketed with minimal oversight. This has led to the proliferation of products with unverified claims, making it difficult for growers to differentiate effective solutions from ineffective ones.

Government agencies are actively considering regulatory frameworks for biostimulants to ensure quality control without stifling innovation. The Biostimulant Industry Alliance and other trade organizations are working to establish scientific standards and promote best practices.

Market Trends and Future Outlook

Despite challenges, the biopesticide and biostimulant markets are poised for significant growth. Market research predicts a continued rise in demand due to increasing consumer preference for organic and residue-free crops. Additionally, advancements in microbial formulations and AI-driven precision agriculture will enhance the effectiveness of these products.

Data and Charts from Industry Sources

1. Projected Market Growth of Biopesticides and Biostimulants (2020-2030)
  • Data Source: Market research reports from MarketsandMarkets, Mordor Intelligence, and Research and Markets.
  • Methodology: Extrapolation of market size based on reported CAGR (Compound Annual Growth Rate) values of 12-15% for biopesticides and 13-16% for biostimulants from recent industry reports.

References:

  • MarketsandMarkets (2023). Biopesticides Market – Global Forecast 2028.
  • Mordor Intelligence (2023). Biostimulants Market Analysis & Forecast 2028.
  • Research and Markets (2023). Trends in Agricultural Biologicals.
2. Investment Trends in Biostimulant Research and Development (2015-2025)
  • Data Source: Reports from AgFunder, FAO, and OECD on global agricultural input investments.
  • Methodology: Estimation based on reported investments in biologicals, venture capital funding for agri-tech startups, and projected R&D budgets from industry leaders.

References:

  • AgFunder (2023). Investment in AgTech and Biostimulants.
  • FAO (2023). Sustainable Agriculture and Innovation Trends.
  • OECD (2022). Trends in Agricultural R&D.
3. Adoption Rates of Biostimulants Across Different Crop Sectors
  • Data Source: Surveys and adoption studies from USDA, European Biostimulant Industry Council (EBIC), and International Biostimulants Forum.
  • Methodology: Aggregated adoption data from industry reports and regional case studies, indicating highest adoption in vegetable and fruit production, with lower adoption in ornamentals.

References:

  • USDA (2023). Adoption of Biostimulants in U.S. Crop Production.
  • EBIC (2023). European Biostimulants Market Report.
  • International Biostimulants Forum (2022). Global Trends in Biological Crop Inputs.
4. Regulatory Differences Between Biopesticides and Biostimulants
  • Data Source: Regulations from EPA, European Food Safety Authority (EFSA), and USDA Organic Program.
  • Methodology: Comparative analysis of regulatory frameworks governing product registration, scientific validation, and market oversight for biopesticides versus biostimulants.

References:

  • EPA (2023). Biopesticide Registration Guidelines.
  • EFSA (2023). Regulatory Framework for Biostimulants in the EU.
  • USDA (2023). Organic Input Standards and Market Oversight.

Understanding the Proper Use of Organic and Biological Products in Pest Control

I am asked all the time about organic and biological products. I have over 130 OMRI approved products on a list for controlling pests (weeds, disease and insects) in organic crops. As more growers turn to organic and biological products for pest control, it’s important to understand the nuances of their application. Unlike synthetic chemicals, these products require careful consideration of environmental conditions, mixing procedures, and application timing to be effective. People assume that the Extension Organic Specialist will know every product on the list and how they work – Wrong! I do know about many, but I am also very dependent on growers who use the products telling me about their experiences. I include a lot of that information in the list below.

To view the 5 Excel Sheets or to Download just click on the picture above.

Why Choose Biological Control Products?

Biological control products, while sometimes slower to act than botanical oils or mineral oils, offer several advantages. These products, often derived from beneficial fungi or bacteria, work by stopping insect feeding almost immediately. Over several hours, they gradually degrade the exoskeleton of pests and can also target eggs and larvae, preventing their development.

While oils can provide a quick knockdown effect, they can be harsh on crops, especially in regions like Texas where intense heat and light can exacerbate their impact. This makes biological products generally a safer option for maintaining crop health.

The Importance of Water pH and Quality

One of the most overlooked aspects of using organic and biological sprays is the pH and quality of the water used for mixing. In Texas, our hard water is notorious for high mineral content, which can bind with the active ingredients in sprays, reducing their effectiveness.

For most biological products, it’s crucial to buffer your water to a pH of 5.5-6.5. This range helps to ensure that the organisms remain stable and active in the solution. An exception is Pyganic, a natural pyrethroid, which is highly sensitive to pH. For Pyganic, water buffered to a pH of 4.0-5.0 is ideal for maximizing its efficacy.

Additionally, always use warm water, not cold, when mixing your sprays. Warm water helps the biologicals to remain active and mix more evenly, preventing the clumping that can occur with cold water.

Timing Your Application

Timing is everything when it comes to applying organic and biological products. Unlike synthetic chemicals, these products are sensitive to environmental conditions, particularly UV radiation. Applying them in the evening or at dusk is ideal for several reasons:

  • Reduced UV Exposure: UV radiation can degrade biological products quickly. Applying in the evening allows the product to remain effective longer.1
  • Insect Activity: Many insects are more active when it’s cooler and there’s less light, making it easier to target them effectively.
  • Improved Residual Effect: Spraying in the evening allows the droplets to stay moist longer, thanks to slightly higher humidity. This moisture helps the product adhere better to the plant surfaces and provides residual protection overnight.2

Click on this picture above to read about adjuvants

The Role of Organic Adjuvants in Biological Spray Applications

Organic adjuvants play a critical role in enhancing the performance of biological and organic spray products. By reducing the surface tension of the spray solution, adjuvants help the product spread more evenly across plant surfaces, ensuring better coverage of leaves, stems, and other target areas.

In addition to improving coverage, adjuvants help prevent biological products from drying out too quickly. Many beneficial organisms, such as fungi and bacteria, require time to adhere to the plant surface and begin their activity. Rapid drying can reduce their effectiveness. By maintaining moisture on the surface longer, adjuvants enhance the opportunity for these organisms to establish and do their job effectively.

When selecting an organic adjuvant, ensure it is compatible with the biological product you are using. Always follow label recommendations for application rates and test compatibility in a small jar test if you’re mixing multiple products. Proper use of surfactants can make a significant difference in achieving the desired results from your pest control program.

Common Pitfalls and How to Avoid Them

Many growers who experience issues with organic products often trace the problem back to a few common mistakes:

  1. Improper Mixing: Failing to buffer water or using cold water can lead to reduced efficacy. Always mix according to the product’s instructions and monitor the pH closely.
  2. Environmental Conditions: Applying products during the heat of the day or in bright sunlight can degrade their effectiveness. Always aim for cooler, less bright times of the day.3
  3. Timing: Don’t rush your application. Ensure that you’re applying at the right time to maximize the product’s impact.

Conclusion

By understanding and addressing these factors, you can significantly improve the effectiveness of your organic and biological pest control efforts. Remember, the success of these products often hinges on the details—proper mixing, the right environmental conditions, and timely application.

I encourage you to share your experiences and any questions you might have in the comments below. Together, we can continue to refine our practices and improve the outcomes of organic farming.

  1. The timing of pesticide application can significantly affect the level and persistence of pesticide residues. Evening applications generally lead to higher pesticide residue levels over a longer period compared to morning applications.
    Key Findings
    Effect of Application Timing: Evening applications of pesticides tend to result in higher residue levels that persist longer. This is because the conditions in the evening, such as lower temperatures and reduced sunlight, slow down the degradation of pesticides, allowing residues to remain on plants for extended periods (Norida et al., 2023; Moraes et al., 2021; Makram. et al., 2020).
    Degradation Factors: Sunlight and UV exposure are critical in the degradation of pesticides. Pesticides degrade more effectively when exposed to direct sunlight in the morning compared to the evening, as seen in studies where morning sunlight led to more significant degradation of certain pesticides (Makram. et al., 2020).
    Impact on Efficacy: The effectiveness of pesticides can also vary with the time of application. For instance, some studies have shown that morning applications can be more effective in controlling certain pests due to better environmental conditions for pesticide action (Skuterud et al., 1998; Moraes et al., 2021).
    Environmental Considerations: Applying pesticides in the evening can reduce the immediate impact on non-target organisms, such as bees, as residues have more time to dissipate before these organisms become active again in the morning (Swanson et al., 2023).
    Conclusion
    Evening applications of pesticides generally result in higher and more persistent residue levels compared to morning applications. This is due to slower degradation rates in the absence of sunlight and cooler temperatures. While this can enhance the persistence of pesticide effects, it also raises concerns about prolonged exposure to residues. Therefore, the timing of pesticide application should be carefully considered to balance efficacy and environmental impact.

    References
    Skuterud, R., Bjugstad, N., Tyldum, A., & Tørresen, K. (1998). Effect of herbicides applied at different times of the day. Crop Protection, 17, 41-46. https://doi.org/10.1016/S0261-2194(98)80020-3
    Norida, M., Yahya, S., & Ghazali, F. (2023). Effectiveness of Homemade Repellents and Spray Timing in Controlling Insect Pest in Okra (Abelmoschus esculentus) and Chinese Mustard (Brassica rapa var. Parachinensis). IOP Conference Series: Earth and Environmental Science, 1208. https://doi.org/10.1088/1755-1315/1208/1/012021
    Swanson, L., Melathopoulos, A., & Bucy, M. (2023). Systematic review of residual toxicity studies of pesticides to bees and comparison to language on pesticide labels using data from studies and the Environmental Protection Agency. bioRxiv. https://doi.org/10.1101/2023.06.05.543089
    Moraes, H., Ferreira, L., De Souza, W., Faria, R., De Freitas, M., & Cecon, P. (2021). Spray volume, dose and time of day of glyphosate application in the control of Urochloa brizantha. Bioagro. https://doi.org/10.51372/bioagro333.1
    Makram., S., Ibrahim, H., & Mohammed., M. (2020). EFFECT OF DIRECT SUNLIGHT AND UV-RAYS ON DEGRADATION OF BUPIRIMATE, PENCONAZOLE AND PROFENOFOS. **. https://doi.org/10.21608/fjard.2020.189675 ↩︎
  2. Ibid ↩︎
  3. Ibid ↩︎