Tag: Agriculture

Enhancing Organic Rice Yields: Texas Researchers Lead the Way in Ratoon Crop Production

Dr. Tanumoy Bera is a Postdoctoral Research Associate at the Texas A&M AgriLife Research Center in Beaumont. In 2022 he was awarded a grant by Southern SARE with a project called, “Development of Sustainable Organic Rice Ratoon Production Systems in the Southern US,” and he has some excellent results so far with more to come. Here is a progress report from Dr. Bera and I think organic rice growers can benefit from his observations.

by Dr. Tanumoy Bera, Rice Researcher

While organic rice consumption in the U.S. has grown substantially in recent years, demand for domestically grown organic rice hasn’t kept pace. Instead, cheaper imports have dominated the market, creating challenges for U.S. producers trying to meet the increasing appetite for organic rice while maintaining profitability. To address these challenges, researchers at Texas A&M AgriLife in Beaumont are focusing on improving organic ratoon rice production—a method that allows rice to be harvested from the regrowth of previously harvested stubble. This technique is especially valuable because it enables a second harvest without the need to replant, which helps farmers reduce costs, increase productivity, and compete with lower-priced imports while still maintaining a viable net income per acre.

This ongoing study, initiated in 2022, aims to evaluate how rice cultivars, crop rotation practices, and nitrogen application rates affect the yield and quality of organic ratoon rice. The team tested two cultivars—Presidio and RiceTec XP753—alongside two management approaches: winter fallow and cover cropping. Their goal is to determine how these factors influence yield, milling quality, nitrogen content, and nitrogen removal in an organic ratoon system.

Early findings have been promising. The hybrid XP753 showed a remarkable performance, increasing the main crop yield by 75% and ratoon yield by 97% compared to Presidio. This is partly due to hybrid varieties like XP753 being bred to combine the best traits from parent plants, resulting in higher yields and greater resilience—key attributes for organic farming.

However, establishing cover crops in southeast Texas has been challenging, mainly due to wet winters and poor drainage in heavy clay soils. Despite these difficulties, cover crops, when successfully established, have provided significant benefits. To enhance nitrogen availability, the researchers utilized organic-approved inputs such as compost and cover crops, finding that an equivalent of 90 pounds of nitrogen per acre was optimal for achieving the greatest yields, with greater rates offering no additional advantage. This insight helps farmers optimize nitrogen inputs using sustainable sources, saving costs while promoting organic practices.

Looking ahead, the research will continue into the 2025 season, aiming to refine these findings and explore their long-term impacts. This work is crucial as demand for organic products continues to rise, providing farmers with improved productivity while supporting sustainable agricultural practices. With initiatives like this, Texas A&M AgriLife is helping pave the way for a more resilient and environmentally friendly future in agriculture.

Other Rice Resources (just click a link!)

Understanding the Three-Line CMS System in Hybrid Rice Breeding

As rice breeding continues to advance, hybrid rice varieties have emerged as a powerful tool for increasing yields, improving disease resistance, and enhancing grain quality. A key innovation behind hybrid rice production is the Cytoplasmic Male Sterility (CMS) system, which enables breeders to produce hybrid seeds efficiently. This blog post explains how the three-line CMS system works and why it’s so valuable for breeders and farmers alike.

What is Cytoplasmic Male Sterility (CMS)?

Cytoplasmic Male Sterility (CMS) is a genetic trait that prevents a plant from producing functional pollen. This characteristic is particularly useful in hybrid seed production because it ensures the plant cannot self-pollinate. Instead, the male-sterile plant must be pollinated by another plant, allowing breeders to control the parentage of hybrid seeds.

The Three-Line System in Hybrid Rice Production

The three-line system involves three types of rice lines:

  • A-Line (CMS Female): A male-sterile line that cannot produce viable pollen, used as the female parent in hybrid seed production.
  • B-Line (Maintainer Line): Genetically identical to the A-line but fertile. It is used to maintain the CMS trait in the A-line.
  • R-Line (Restorer Line): A fertile line that carries restorer genes to restore pollen fertility in the F1 hybrid generation.

Each of these lines plays a critical role in ensuring the successful production of hybrid rice seeds, and together they contribute to the final hybrid variety’s vigor and performance.

How the Crosses Work in the Three-Line System

1. Maintaining the CMS Line

The A-line (CMS female) is male-sterile, meaning it cannot produce seeds on its own because it lacks viable pollen. To maintain this line, breeders must cross the A-line with the B-line (maintainer), which has the same genetics but does not have the male-sterile trait.

  • Cross: A-Line (CMS female) × B-Line (Maintainer male)
  • Result: More A-line seeds, all of which remain male-sterile. The B-line helps propagate the A-line without restoring fertility, ensuring that male sterility is preserved.

2. Producing Hybrid Seeds

Once enough CMS A-line plants are produced, they are crossed with the R-line (restorer) to create hybrid seeds. The R-line carries genes that restore pollen fertility in the hybrid offspring, allowing the hybrid plants to reproduce normally.

  • Cross: A-Line (CMS female) × R-Line (Restorer male)
  • Result: F1 hybrid seeds that combine the best traits from both the A-line and the R-line. These seeds exhibit hybrid vigor (heterosis), meaning the plants will grow faster, yield more, and be more resilient to stresses like pests and diseases.

Visual Representation of the Three-Line System

Below is a flowchart that visually represents the three-line CMS system:

    A-Line (CMS female) × B-Line (Maintainer male)
              ↓
     Male-Sterile Seeds (A-Line)
              ↓
A-Line (CMS female) × R-Line (Restorer male)
              ↓
     F1 Hybrid Seeds (Fertile)

This flowchart provides a simplified view of how the A-line, B-line, and R-line interact to produce hybrid seeds. It helps to visualize the sequential process of maintaining the CMS line and producing vigorous hybrid seeds.

Distribution of Beneficial Traits in the Three Lines

In the three-line system, both the A-line and R-line contribute valuable traits to the hybrid, while the B-line helps maintain the CMS line. Here’s a breakdown of what each line brings to the table:

Line TypeRoleTraits Contributed to Hybrid
A-Line (CMS)Female parent; male-sterileCarries key agronomic traits (yield, quality, resistance)
B-Line (Maintainer)Maintain A-line; not used in hybridGenetically identical to A-line; used for maintenance
R-Line (Restorer)Male parent; restores fertilityProvides restorer genes and complementary traits to enhance hybrid vigor

Why Use the Three-Line System?

The three-line CMS system has been a game-changer in hybrid rice breeding for several reasons:

  • Efficient Hybrid Seed Production: CMS ensures the A-line plants cannot self-pollinate, making it easier for breeders to control the crossing and ensure that hybrid seeds are produced with the desired genetic combinations.
  • Hybrid Vigor: The cross between the A-line and R-line produces F1 hybrid plants that often outperform both parent lines due to heterosis (hybrid vigor). These plants grow faster, produce higher yields, and are more adaptable to varying environmental conditions.
  • Consistent Performance: By carefully selecting A-line and R-line parents, breeders can develop hybrids that consistently deliver high yields and other desirable traits, such as disease resistance or drought tolerance.

Real-World Example in Rice

For example, let’s say a breeder selects an A-line that has high grain quality and yield potential but lacks disease resistance. They could pair this A-line with an R-line that has strong disease resistance and good stress tolerance. The resulting hybrid will combine these traits, offering farmers a variety that not only yields well but also stands up to diseases and environmental stressors.

Saving Hybrid Rice Seeds and Trait Loss

It’s important to note that saving seeds from hybrid rice plants is generally not recommended. The F1 hybrid seeds produced through the three-line system exhibit hybrid vigor due to the combination of traits from the A-line and R-line. However, if these hybrid seeds are saved and replanted, the resulting plants (F2 generation) will not retain the same level of performance. This is because the desirable traits that make the F1 hybrids so productive can segregate and diminish in subsequent generations, leading to reduced yields, inconsistency, and loss of hybrid vigor. To read more about organic rice varieties and resources click this link: Organic Rice Resources

Key Takeaways

  • A-line (CMS) contributes key agronomic traits but cannot produce pollen, ensuring controlled cross-pollination.
  • B-line is a maintainer, used to propagate the A-line but not involved in the hybrid seed production.
  • R-line restores fertility and adds complementary traits, leading to a vigorous and productive F1 hybrid generation.

The three-line CMS system enables efficient hybrid seed production, combining the best traits from different lines to create high-performing hybrids that meet farmers’ needs for yield, resilience, and grain quality. The three-line CMS system remains one of the most effective methods for producing hybrid rice seeds, ensuring that breeders can develop varieties that push the limits of productivity and sustainability.

Conclusion

As global demand for rice, especially organic rice, continues to grow, the ability to produce high-yielding, resilient hybrid varieties through the CMS system is more important than ever. This method ensures that breeders can consistently produce hybrids that help farmers achieve better harvests, even in the face of environmental and biological challenges. Hybrid rice breeding holds a promise for amplifying traits important for organic producers.

By understanding the nuances of the A-line, B-line, and R-line, breeders can make informed choices about which traits to focus on in their breeding programs. Ultimately, the three-line system not only enhances hybrid seed production but also contributes to the long-term sustainability of rice farming.

Lessons from a Study on Hay Variability: Insights for Organic Producers

When it comes to hay production, many farmers assume that bales harvested from the same field will contain similar nutrient levels. The differences across fields was evident in a recent article by Michael Reuter in Progressive Forage1. His article and data show us all, the significant differences even among bales from the same field. Understanding and managing these differences can make a big impact, especially for organic farmers who want to optimize livestock nutrition and maintain a consistent quality of forage.

Variability in Nutrient Composition: What the Data Tells Us

The following table from the article1 presents the nutrient composition and analysis of 20 individual bales randomly sampled from an 86-acre hay field, which was managed as a unit and harvested all at the same time:

The analysis of the 20 hay bales showed surprising variability in key nutrients such as Crude Protein (%CP), fiber content (measured as %ADF and %NDF), and essential minerals like Calcium (%CA) and Phosphorus (%P). Summary statistics of the nutrient composition are presented below:

Crude protein, for example, varied from 9.7% to 15.9%. This 6.2 percentage point difference could significantly influence the nutritional value of hay fed to livestock.

Fiber levels also differed substantially. The ranges in Acid Detergent Fiber (%ADF) and Neutral Detergent Fiber (%NDF) directly affect how digestible the hay is and how much livestock will eat. Calcium and phosphorus levels, which are critical for bone health and metabolic functions, also showed noteworthy differences between bales.

Why Does This Variability Happen?

Even in a well-managed hayfield, several factors can contribute to this nutrient variability:

  1. Soil Fertility Differences: Organic amendments like compost or manure may not be evenly spread across the field. Variability in soil nutrients can cause different areas of the field to produce hay with varying nutrient levels.
  2. Crop Rotation and Plant Diversity: Rotating different crops or allowing natural diversity in the field is beneficial for soil health, but it can also lead to differences in how well each crop absorbs nutrients.
  3. Pest, Weed, and Microclimate Effects: Organic fields often have more variability in pest pressure, weed growth, and microclimates. These differences can lead to uneven growth, which in turn affects nutrient content.
Managing Nutrient Variability

To minimize these differences and provide more consistent forage quality, farmers can take several practical steps:

  • Soil Testing: Regularly test soil across different sections of the field. This helps identify nutrient deficiencies or hotspots, allowing targeted amendment application.
  • Even Amendment Application: When applying compost, manure, or other organic fertilizers, try to ensure even distribution across the field. Variability in amendment application is a key factor in nutrient inconsistency.
  • Use Cover Crops: Cover cropping can help improve soil structure and increase nutrient cycling, which leads to more uniform plant growth.
  • Monitor Harvest Stages: Harvesting at a consistent plant maturity stage across the field can help reduce variability. Plants harvested at different growth stages can differ significantly in nutrient content.
  • Matching Regular Soil and Forage Testing: Applying soil nutrients based on soil tests and then testing multiple hay bales gives a clearer picture of the overall nutrient profile from start to finish. Testing hay allows adjustments in livestock feeding to meet nutritional needs effectively and maybe even save money!
Why Managing Nutrient Variability Matters

In organic systems, where synthetic supplements are not allowed, maximizing the natural nutrient content of forages is essential. Variable hay quality can significantly impact livestock health, as inconsistencies in nutrition may lead to reduced growth rates, lower milk production, or other health issues. Moreover, optimizing the quality of on-farm forage can reduce the need for expensive purchased supplements and any organic supplements are not cheap.

Maintaining consistent forage quality also supports animal welfare, which is a core value of organic and sustainable farming. Healthy, well-fed animals are more resistant to disease, aligning with the organic principle of promoting natural immunity and reducing intervention.

Conclusion

Variability is a natural part of farming, but with informed management, we can turn that variability into an opportunity for learning and improvement—ultimately providing better feed for our livestock and keeping our farms resilient.

1.Data Source: October 1, 2024 issue of Progressive Forage written by Michael Reuter, Analytical Services Technical Manager at Dairy One Cooperative Inc. and Equi-Analytical Labs.

New to Texas Organic?

In case you didn’t know: Texas has impressive diversity in its organic agricultural production. The organic crops grown in Texas encompass staple commodities such as peanuts, cotton, corn, wheat, sorghum, alfalfa, rice, hay, grass, and soybeans. Beyond these staples, Texas farmers cultivate a wide array of vegetables, including lettuce, spinach, onions, tomatoes, peppers, kale, radishes, garlic, and microgreens. The state’s organic fruit production features watermelons, strawberries, blueberries, and various citrus fruits like grapefruits and oranges. Additionally, a variety of herbs such as basil, cilantro, dill, parsley, and other spices are grown organically. Texas also supports the cultivation of flowers, transplants, and specialty crops like mushrooms, aloe vera, and cacti.

Complementing its crop production, Texas’s organic agriculture sector includes a growing livestock industry. Organic farmers in the state produce milk and from milk lots of other dairy products like butter and cheese. There is a growing demand for dairy products nationwide and Texas leads in organic dairy.

Texans also raise organic chickens, turkeys, and cattle, supplying organic beef, poultry, and eggs to consumers. Moreover, Texas organic producers’ market organic beef and dairy replacement livestock, which are sold to organic operations both within the state and across the country. This extensive range of organic crops and livestock products demonstrates Texas’s rich and diverse organic agriculture sector, solidifying its position as a leader in organic farming.

So, what does a typical organic producer in Texas look like? Well this producer is probably located in one of 5 organic “hot spots” in Texas – the High Plains from Amarillo north and doing dairy, grain or silage crops; or maybe the South Plains from Lubbock south to Andrews growing peanuts, cotton or wheat; or possibly in the Central Texas area bounded by Comanche and Waco south to Austin, and growing forage crops for more dairy producers or small acreage vegetables; or maybe in the Gulf Coast area from Beaumont to El Campo growing organic rice; or this organic producer is possibly in the Rio Grande Valley right up against the Mexico border growing citrus and vegetables. With over 576,000 acres certified organic they are scattered across a big state. And they aren’t small either with the average sized organic farm being 1,249 acres. Even the median (right in the middle of the list) acreage at 370 acres is considered large for most states’ organic programs – everything is bigger in Texas!

Who Grows Organic Peanuts in the World

Ever wondered where organic peanuts are produced? Examining the global map of certified organic peanut farms reveals some interesting patterns. Countries like China, India, Brazil, Argentina, and Togo are major players in organic peanut production, and the United States also makes significant contributions.

Here’s a breakdown of the acreage dedicated to organic production with an emphasis on peanuts in some important countries:

  • China: Approximately 152,860 acres, with companies like Jilin Jinya Nut Processing Co., Ltd. contributing significantly.
  • India: Various Organic Grower Groups collectively manage over 103,686 acres of organic peanut farms, demonstrating the effectiveness of cooperative farming.
  • Brazil: Around 60,592 acres, with Sambazon do Brasil Agroindustrial Ltda contributing a substantial 60,573 acres.
  • Argentina: About 36,636 acres, with companies like Campos Verdes Argentinos SA and Conosur Foods Argentina SA being key contributors.
  • Togo: 53,325 acres managed by SOYCAIN TRADING SARL U, making it a significant player in West Africa.
  • United States: Numerous family-owned farms collectively contribute over 100,000 acres to organic peanut production, with notable producers one in West Texas managing 9,355 acres.

China’s Contribution

China leads with over 152,000 acres dedicated to organic peanut farming. Companies such as Jilin Jinya Nut Processing Co., Ltd. and Wuqiang County Jiyuan Oil Crop Planting Professional Cooperative are significant contributors. Different regions within China add to this market, but China consumes most of what it produces.

India’s Cooperative Farming

In India, numerous Organic Grower Groups (which have group certification) collectively manage over 103,000 acres. These groups demonstrate how small farmers work together to make a significant impact, collaborating to drive success in organic agriculture while keeping costs down.

Brazil’s Organic Production

In Brazil, Sambazon do Brasil Agroindustrial Ltda has 60,573 acres dedicated to organic production, including a substantial amount of peanuts. This company is not only a leader in Brazil but also one of the largest certified organic producers in the world.

Argentina’s Key Players

Companies like Campos Verdes Argentinos SA and Conosur Foods Argentina SA are significant contributors in Argentina, with combined acreage reaching around 36,000 acres. These farms focus on cotton and peanuts, concentrating in regions suitable for these crops.

Togo’s Role in West Africa

In Togo, SOYCAIN TRADING SARL U manages 53,325 acres, contributing significantly to the global peanut supply from West Africa. It raises questions about how much they export!

Family Farms in the USA

Now, let’s consider the United States. While we may not have single operations as large as those in China or Brazil, the U.S. has a network of family-owned farms that collectively contribute over 100,000 acres to organic production. For example, one Texas farmer manages 9,355 acres, making him one of the prominent certified organic peanut producers in the country.

These farms often represent family legacies in organic agriculture, with names appearing across multiple farms in Texas and elsewhere. This reflects the enduring nature of family farming traditions contributing to the organic peanut industry.

Acknowledging Other Contributors

We might have missed highlighting some of the smaller but important players in the organic peanut industry:

  • Paraguay: Companies like Indugrapa SA and Alemán Paraguayo Canadiense S.A. contribute over 10,760 acres to global organic peanut production.
  • Bolivia: Finca San Carlos manages 3,118 acres, adding to South America’s contribution.
  • Vietnam: Companies like FG Products Company Limited and Hebes Company Limited collectively manage over 8,600 acres.

These contributions, while smaller, are vital to the diversity and resilience of the global organic peanut supply chain.

Bringing It All Together

These peanut producers are essential links in the chain that brings organic products from the farm to your table. Organic begins on the farm and remains so until it is packaged.

Most people don’t consider where their peanuts come from or the journey they take. The majority of these farms are committed to sustainable practices, ensuring that organic integrity is maintained every step of the way. With the recent implementation of Strengthening Organic Enforcement (SOE) rules, the entire value chain—including brokers and even transporters—is now certified to ensure accountability.

Cover Crops in South Plains Cotton – Not possible, or is it?

Carl Pepper Farm Tour – Spring of 2023

I was scrolling through my LinkedIn this morning (Monday, July 15, 2024) and saw a post by Dr. Joseph Burke that I just had to check out!

Just click on the picture to read the full research paper!

I am going to cut through all the information in the full-text and give you a look at the mini version. Let’s start with the abstract from the first page.

Abstract: By improving soil properties, cover crops can reduce wind erosion and sand damage to emerging cotton (Gossypium hirsutum L.) plants. However, on the Texas High Plains, questions regarding cover crop water use and management factors that affect cotton lint yield are common and limit conservation adoption by regional producers. Studies were conducted near Lamesa, Texas, USA, in 2017–2020 to evaluate cover crop species selection, seeding rate, and termination timing on cover crop biomass production and cotton yield in conventional and no-tillage systems. The no-till systems included two cover crop species, rye (Secale cereale L.) and wheat (Triticum aestivum L.) and were compared to a conventional tillage system. The cover crops were planted at two seeding rates, 34 (30.3 lbs./ac.) and 68 kg ha (60.7 lbs./ac.), and each plot was split into two termination timings: optimum, six to eight weeks prior to the planting of cotton, and late, which was two weeks after the optimum termination. Herbage mass was greater in the rye than the wheat cover crop in three of the four years tested, while the 68 kg ha (60.7 lbs./ac.) seeding rate was greater than the low seeding rate in only one of four years for both rye and wheat. The later termination timing produced more herbage mass than the optimum in all four years. Treatments did not affect cotton plant populations and had a variable effect on yield. In general, cover crop biomass production did not reduce lint production compared to the conventional system.

This last statement, “cover crops did not reduce lint production,” is hugely significant and yet it is exactly what many organic cotton producers have been saying for years!

Temperature and Rainfall data during the study

To continue the “mini version” of the research let’s turn to the Summary and Conclusions on page 9 of the research paper.

The semi-arid Texas High Plains presents challenging early-season conditions for cotton producers. Cover crops can help mitigate erosion and protect cotton seedlings from wind and sand damage without reducing yields compared to conventional practices if managed appropriately. Effective cover crop management is needed to optimize cotton lint yield compared to conventional tillage systems. We focused on three cover crop management practices: species selection, seeding rate, and termination timing. With regard to species selection, rye produced greater herbage mass in three of the four years. The seeding rate had less of an effect on herbage mass; doubling the seeding rate from 34 to 68 kg ha (30.3 – 60.7 lbs./ac.) did not contribute to increased herbage mass. This change in seeding rate only causes an increase in seed costs, and this trend held true for both species and termination timings. Termination timing had the most significant effect on herbage mass, with a two-week delay in termination timing, increasing herbage mass production from 44 to 63%. At the targeted termination time of six to eight weeks before planting, rye and wheat experienced increased growth as they transitioned from vegetative to reproductive growth. This critical period makes termination timing an essential aspect of herbage mass management. Termination timing can also impact the carbon-to-nitrogen ratio, where higher C:N at later growth stages can increase N immobilization. While water availability or allelopathy concerns are cited as risks for cotton germination and emergence when using cover crops, cotton plant populations were not affected in this study.

Cotton lint yields were not impacted by increasing cover crop herbage mass, except in 2018, when greater wheat biomass resulted in decreased lint yield compared to the conventional system. In each year, wheat or rye at a 34 kg ha (30.3 lbs./ac.) seeding rate and optimum termination timing resulted in cotton lint yields not different than the Conventional Treatment. While yield potentials can differ between years depending on precipitation and temperatures, effective cover crop management can help sustain cotton lint yields when compared to conventional treatments. Rye seed tends to cost more than wheat, but it grows more rapidly and could be terminated earlier to allow for increased moisture capture and storage between termination and cotton planting. (below is the final sentence in the paper and summarizes well the entire study)

“This research demonstrates that with effective cover crop management, the implementation of conservation practices can be successful in semi-arid cropping systems.“