Scientists investigated the effects of long-term biosolids application on dioxin accumulation in soil and uptake by plants. The study found that dioxins were not detected in corn grains but only trace levels were found in corn stover.
Researchers found that increasing sensor grid size from .5 square meters to 5.1 square meters has no significant impact on precision management outcomes. This larger grid requires fewer sensors and makes fertilizer application easier and more cost-efficient for farmers.
USGS scientists investigated pesticide occurrence in ground water at four US sites. Herbicides triazines and chloroacetanilides were most frequently detected, with degradation products often exceeding parent compounds. Redox conditions, residence times, oxygen levels, and nitrogen gas influenced pesticide concentrations.
The book offers a holistic approach to understanding nitrogen management, emphasizing accountability and nitrogen budgeting. The authors' broad perspectives address the nitrogen cycle's impact on climate change and soil fertility.
The USGS conducted a holistic study on agricultural chemicals in the environment, collecting field data and employing numerical models to simulate water and chemical transport. The results show that modifications to agricultural practices can profoundly alter chemical transport rates, affecting contaminant dilution and transformation.
A new study reveals that longer, more complex crop rotations increase organic corn yields by 30%, while also improving soybean yields. The results show that diverse crop systems can help address production challenges in organic grain crop production.
A survey of college students revealed mixed opinions on the benefits and drawbacks of biotechnology in sustainable agriculture, with some supporting genetically modified crops and others expressing concerns over environmental and social impacts. The study suggests that educators should provide neutral exposure to both sustainable agric...
Researchers found that diversified, low-external-input farming systems can achieve high crop yields and profitability while reducing synthetic fertilizer and herbicide use. The study's results suggest that large reductions in agrichemical use are compatible with high crop yields and profits.
The new monograph Methods of Soil Analysis. Part 5. Mineralogical Methods presents valuable methodologies for analyzing soil minerals, including atomic force microscopy and X-ray absorption spectroscopy. These methods have applications in soil classification, environmental remediation, and nutrient cycling.
Planting herbicide-tolerant crop varieties can significantly reduce herbicide losses and concentrations in surface runoff, according to a USDA study. The study found that contact herbicides like glyphosate and glufosinate resulted in lower concentrations of herbicides in water compared to residual herbicides.
Winter cover crops can perpetuate themselves through self-seeding, eliminating planting costs and time constraints for farmers. This innovative management system also enhances weed suppression and improves soil quality.
A discussion-based scenario was shared by Lori Unruh Snyder to teach critical thinking about food biotechnology. The exercise helped students understand the conflict between those affected and policymakers, as well as regional opinions impacting the world. By debating pros and cons of biotechnology globally, students enhanced their cri...
Research from the University of Wisconsin-Madison found that organic alfalfa and wheat can be as productive as conventional systems. Organic grain crops, such as corn and soybeans, also yielded 90% of their conventional counterparts in terms of dry matter production.
Scientists integrated remote sensing products with soil science data to quantify soil carbon changes over large regions. The study results in a spatially-explicit carbon accounting framework that can predict future land use and inform enhanced land management data sets.
A study of Lake Bloomington, a major source of drinking water for central Illinois residents, reveals high nitrate concentrations exceeding safe levels. The research aims to inform producers on nitrogen fertilizer management in sensitive watershed areas.
A study found that profitability in transgenic cotton was most closely associated with yields, rather than the technologies themselves. The research compared production systems using different transgenic technologies and non-transgenic cultivars, concluding that higher returns were achieved from non-transgenic options.
A partnership between a professor and a librarian helps undergraduate students search for and validate online scientific literature. The tutorial teaches skills to sift through growing amounts of information, identifying valid peer-reviewed scientific research and experimentation.
Researchers used nitrogen isotopic discrimination to identify non-organic sweet pepper plants grown with synthetic fertilizers. The study found that synthetic fertilizers significantly reduced nitrogen isotope ratios, with old leaves and fruits being more sensitive to the additions.
In northwest India, a study found that applying site-specific nutrient management (SSNM) increased average rice grain yields by 17% compared to traditional farming practices. The approach also led to improved nitrogen and phosphorus use efficiency, with profits rising about 14%.
Researchers report that sustainable biomass production may be hindered by soil organic matter needs, suggesting a need for alternative crops and improved agricultural practices. The study highlights the importance of considering multiple factors beyond just soil erosion when evaluating feedstock supply.
Researchers found that high-intensity manure management practices can increase the rate of antibiotic dissipation, but were not effective at reducing antibiotic resistance genes. Longer treatment times may be necessary to achieve significant reductions in both antibiotics and ARG.
The Council for Agricultural Science and Technology (CAST) has introduced two new commentaries on biofuel byproducts and ethanol production, highlighting the potential risks of invasive pests in dedicated feedstock crops. The commentaries aim to provide a process to quantify and minimize this risk.
Researchers developed a simplified protocol to teach growers how to convert complex yield and soil data into pertinent information, enabling site-specific management decisions. By using this protocol, Australian growers improved their field management, including implementing site-specific nutrient and pest management treatments.
Researchers developed a new maize model that simulates kernel formation, increasing accuracy of crop yield predictions. By accounting for pollen movement and other factors, the modified CERES-Maize model provides more accurate estimates across various environmental conditions.
A collaborative learning exercise between land managers and scientists aimed to explore the impacts of long-term temperature changes and precipitation distribution on rangelands. The study found that experiential learning is an effective teaching method for critical thinking, communication skills, and engaging learners.
A US EPA study found that wider vegetated borders around streams are the most effective way to protect wetlands from nitrogen pollution. The study showed that wide buffers (>50 meters) removed more nitrogen than narrow buffers (0-25 meters), and that herbaceous and forest vegetation were more effective when wider.
Scientists propose new cropping strategies for a variable climate, exploring crop sequencing decisions based on weather patterns and management goals. The study's findings highlight the importance of understanding short-term crop sequencing effects on agronomic and environmental attributes.
A study by University of Minnesota researchers found that alternative cropping systems reduced nitrate levels in surface and ground water by 41-62% compared to conventional farming practices. Increasing cropping system biodiversity can improve water quality.
Researchers used a combination of methods to pinpoint contamination sources in the Plum Creek watershed, identifying cattle and wildlife as dominant sources of fecal bacteria. The study highlights the importance of using multiple tools to track fecal contamination and inform pollution-control strategies.
Researchers found that a soil model can accurately estimate carbon levels in soil, enabling farmers to verify soil carbon change and sell carbon credits. The Century model's accuracy depends on accurate soil texture data, highlighting the need for benchmark monitoring sites.
Researchers found that alternative soil fertility management and reduced tillage increased sorghum crop yield in eastern Uganda. Local farmers participated in on-farm trials to evaluate the effectiveness of low-cost alternatives, including mucuna fallow, cowpea rotation, and manure application.
Scientists have long debated the birthplace of the European potato. New genetic information reveals that remnants of early potatoes are of Andean and Chilean origin, with possible hybrids. This finding challenges previous assumptions and has implications for breeding programs.
Scientists created a mathematical model of bacterial gene transfer rates, taking into account natural subsurface environments. The new model suggests that bacterial transport and colonization are crucial factors in controlling gene spread, potentially impacting bioremediation and antibiotic resistance.
Researchers have developed a rapid test that accurately predicts nitrogen levels in corn soil, enabling growers to optimize fertilizer use. This test has the potential to reduce economic and environmental costs associated with excessive nitrogen application.
Scientists discovered that soil color can be as accurate as laboratory tests in predicting carbon content. The study found that typical description colors done by a soil scientist were nearly as effective in predicting SOC values as the more expensive method of deriving colors by a chroma meter.
The article discusses the limitations of industrial agriculture and the potential benefits of biodiversity in farming. Studies have shown that diverse, synergistic farms can increase net farm income by up to 108% while generating environmental and social benefits.
Two Brazilian soil scientists, Edson Lobato and A. Colin McClung, along with Alysson Paolinelli, the former Minister of Agriculture, will be recognized for their contributions to transforming Brazil's Cerrado region into an agricultural powerhouse through innovative soil fertility research and policy implementation. The $250,000 World ...
The American Society of Agronomy is presenting several awards to distinguished soil scientists, including the Dokuchaev Basic Soil Science Award and the Liebig Applied Soil Science Award. The winners include Dr. Victor Targulian, Dr. Rattan Lal, and Dr. Herman Mücher, who have made significant contributions to their respective fields.
The American Society of Agronomy has published a new CD, 'Soil Wetting Agents', providing practical information on the technology behind soil wetting agents to improve water absorption on golf courses. The resource addresses a gap in turf management education and is available for purchase online.
The book provides a comprehensive understanding of the chemical and biological processes occurring in soil, essential for those studying or working in related fields. Readers will find chapters on various topics, including soil organic matter, macronutrients, and redox processes.
Researchers found that wood chip bedding had less nitrogen loss during composting, reducing volatile losses and improving air quality. Greenhouse gas emissions were similar to those of traditional straw bedding, making it a viable option for beef cattle.
Research papers published in Vadose Zone Journal reveal complex environmental problems at INEEL, including microorganisms and geophysical imaging. Extensive cleanup and monitoring efforts are being based on current understanding of the subsurface and associated contamination issues.
Researchers developed a simple method for ultra trace determination of chlortetracycline and tylosin antibiotics in animal manures and surface/ground waters. Tests showed high concentrations of these antibiotics in swine manure samples, highlighting potential environmental pollution risks.
A study published in Agronomy Journal suggests that producers can reduce seeding rates for Roundup Ready soybeans without affecting yield, especially in northern Wisconsin. This approach could be economically viable for farmers in certain regions, but current recommendations may still be suitable.
A study published in the Vadose Zone Journal examines how different soil types influence Cryptosporidium parvum's transport to groundwater. The research found that sandy soils allow rapid movement of pathogens, while structured soils with large macropores have limited breakthrough.
Research found that inter-seeding winter cereal rye with organic soybeans reduces weed growth and increases yield, but requires specific termination methods for effective management. The study suggests a new approach to organic weed control that prioritizes soil health and sustainability.
An agricultural experiment from 1969 showed that nitrate fertilizer can persist in groundwater and streams for decades, influencing water quality. The study, conducted nearly 30 years later, confirmed this finding and highlights the need for long-term research on agricultural pollution.
Scientists review state-of-the-art ground-penetrating radar methods for measuring water content in vineyard soil, offering improved precision irrigation approaches and optimizing grape crop prediction. The technology provides high-resolution information to develop uniform blocks of optimal soil properties, enhancing overall wine quality.
Eleven individuals were chosen by the Crop Science Society of America for their outstanding professional achievements and contributions to the field of crop science. The honorees are from various institutions, including the USDA-ARS and universities across the US.
Fourteen individuals elected to Soil Science Society of America Fellowship for professional achievements and meritorious service in the field. The award honors outstanding contributions to agronomy and soil sciences.