A Purdue University researcher used a process focusing on one gene to trace the evolutionary history of domesticated rice, discovering genetic variation over millions of years. By comparing domesticated plants to wild rice species, scientists can identify valuable genes for desirable traits like branching and increased plant size.
A collaborative research course taught at one university led to a global collaboration among faculty members from three universities, resulting in significant increases in communication skills and subject matter knowledge. Students reported improved understanding of how communication fits into collaborative problem-solving and anticipa...
Researchers have confirmed that prairies' best soils retain organic carbon and nitrogen pools relatively constant under modern production methods. Most of the early decline occurred in top 50cm soil layers, with evidence of carbon and nitrogen movement to deeper layers.
The study found that removing corn residue can lower N fertilizer requirements, but careful management is still necessary to balance erosion risks and retain adequate residue. Researchers suggest alternative tillage systems like strip-till continuous corn as a viable option in certain environments.
Researchers at Iowa State University used NCSS data to create a detailed Quaternary geologic map of the Des Moines Lobe, achieving strong agreement with existing maps. The map showcases finer detail and user-controllable scale, making it suitable for various disciplines.
A recent study by the American Society of Agronomy found that low levels of herbicides can harm potato plant reproduction. The research revealed that tuber yield and quality can be affected even at rates below those causing vegetative growth reduction or injury.
Scientists from CNRS and University of Reading applied linked rainfall-runoff and Integrated Catchment Model of Nitrogen (INCA-N) models to simulate daily flow and nitrate dynamics in the Garonne watershed. The study found that 75% of the NO3-N river load came from arable farming in the lowlands.
Purdue University researchers identified a role for small-interfering RNAs in regulating and shutting down primary cell wall growth, which may enhance total plant biomass. This discovery could lead to increased cellulose production for plant-based biofuels.
Scientists investigate oil spray as a mitigation technique for reducing methane and carbon dioxide emissions from pig barns. The study found that oil spray techniques reduced average emissions by 20% for methane and 19% for carbon dioxide.
Researchers found that using cover crops, manure, and compost can increase short-term carbon sequestration rates and reduce global warming potential. This win-win option for energy and environment is made possible by proper management of bioenergy cropping systems.
Researchers found that urban tree roots can penetrate compacted subsoils, increasing infiltration rates by up to 153% in reservoirs. Structural soil reservoirs also showed a 27-fold increase in infiltration rate compared to unplanted controls.
Purdue University researchers are working on a new technique called MAGIC to identify gene combinations that increase disease resistance and stress tolerance in crops. By analyzing the genetic diversity of maize, they aim to engineer plants that can withstand most diseases and improve crop yields.
A new study published in Agronomy Journal reveals that reduced tillage can increase peanut crop yields, but the effects of crop rotation and tillage on pest development are more complex. The research found an independent relationship between tillage and rotation practices with respect to peanut yield and pest development.
Purdue researchers found that invasive earthworms enrich forest litter with lignin, a harder-to-decompose plant material, while those with low earthworm activity accumulate more easily degraded carbon. This shift affects soil organisms' ability to decompose remaining carbon.
The American Society of Agronomy (ASA), Crop Science Society of America (CSSA), and Soil Science Society of America (SSSA) presented various scholarships to students pursuing careers in agronomic sciences. The scholarships recognize academic excellence, leadership activities, and future plans related to the field.
The Crop Science Society of America recognized six individuals for their outstanding contributions to crop science. Palle Pedersen received the ASA–CSSA–SSSA Early Career Professional Award for his work on soybean production problems. The award also went to Crystal Rose-Fricker, who developed cool-season turfgrasses with improved disea...
The American Society of Agronomy recognized 2008 ASA Fellows for their professional achievements and meritorious service. The class includes experts in plant-environment interactions, environmental impact analysis, breeding for disease resistance, and crop biotechnology.
The American Society of Agronomy has recognized five individuals with prestigious awards for their excellence in agronomic education, extension, and service. Lee Burras received the Agronomic Resident Education Award for his outstanding teaching skills, while William J. Cox was honored with the Agronomic Extension Education Award for h...
A new USGS study published in the Journal of Environmental Quality shows that pesticide contamination in groundwater has decreased over the past decade. Only six compounds were detected in ground water from at least 10 wells during the study period, with concentrations less than 0.12 parts per billion.
Researchers at Purdue University propose a flexible approach to producing alternative fuels, hydrogen, and electricity from waste materials. The new process could supply up to 20% of transportation fuels in the US annually, reducing greenhouse gas emissions by over 50%.
Researchers at Ohio State University have developed an in-vitro method to test the digestion and absorption of arsenic-laden soil. This simulation can help determine the amount of arsenic that dissolves during digestion, allowing for more efficient assessment of contaminated sites.
A new book from the American Society of Agronomy provides detailed information on the importance of sulfur in agriculture. The book examines the central role that sulfur plays as a nutrient affecting crop yield and quality, animal feed value and human diet.
Researchers from Case Western Reserve University studied Chernobyl-derived radionuclides in Swedish and Polish soil, finding higher levels of plutonium in Swedish soil. The team's findings help shed light on public health ramifications and differentiate radioactive elements from one-time events like the Chernobyl disaster.
Scientists measure radionuclides in soil to understand sediment sources in rivers, revealing that streambank erosion contributes significantly to sediment loads. The study's findings can inform efforts to rehabilitate streams and preserve aquatic populations.
A 110-year-old sustainable farming experiment demonstrates the effectiveness of winter legumes in producing non-irrigated cotton yields, comparable to those using nitrogen fertilizer. The study's findings have implications for long-term soil organic matter and crop yield management.
A recent white paper by leading coastal scientists suggests that wetlands restoration projects may not provide long-term storm protection for the Louisiana Coast. The researchers argue that there is limited scientific evidence to support the effectiveness of such initiatives in reducing storm impacts.
The symposium explores carbon sequestration methods, including forest management, agriculture, and ocean carbon capture. Experts discuss the importance of addressing legal and regulatory challenges to ensure effective carbon sinks.
Researchers are studying the effects of lunar dust on the respiratory system and developing technologies to clean it from space suits. The powdery grey dirt is formed by micrometeorite impacts that can wreak havoc on equipment, but its unique properties also make it susceptible to magnets.
A nationwide study found statistically significant increases in nitrate concentrations in 7 of 24 well networks, with median concentrations exceeding the USEPA maximum contaminant level. The study highlights the importance of long-term monitoring programs to protect ground water quality.
The new book, Soil Science: Step-by-Step Field Analysis, offers clear guidance on improved soil management techniques. The soft-cover guide covers topics such as site evaluation, surveying techniques, and measuring soil pH, making it an essential resource for professionals in the field.
The traditional method of discovering herbicides involves random searching of chemicals, resulting in most commercial products. New biotech information allows companies to create targeted weed killers. The American Society of Agronomy developed an interactive web lesson to teach students about the history and development of herbicides.
Researchers found that site-specific nitrogen and seed density management strategies did not consistently increase profit, but may benefit in certain situations with high maize to nitrogen fertilizer price ratios. Fertilizer nitrogen use efficiency was high across all site-years.
Researchers found that a portion of corn stover can be harvested for biofuel production without reducing soil organic carbon levels in high-yielding systems. This study suggests that corn stover could supply up to 25% of the biofuel crop needed by 2030.
Researchers study drought patterns in northwestern Africa, finding a recent drought is consistent with climate model projections. Hail precipitation in China decreases by nearly half since the 1980s, likely due to rising freezing levels. New data reveals variable wind speeds on Venus, including strong vertical shear at low latitudes.
A study by the University of Tennessee investigates the temporal patterns and statistical persistence of total coliform bacteria in a stream. The research found that short-term persistence is dominated by runoff events, while longer-term persistence is likely related to baseflow, or groundwater supply.
A new study by scientists from Brazil, France, and the US reveals that no-till management combined with winter cover crops is the most effective way to retain nutrients in tropical soils. The research found that this approach can maintain soil organic carbon stocks and mimic natural forested conditions.
A college biology teacher found that by addressing student misbehavior directly, he was able to improve classroom attention and engagement. The study suggests that simply being direct with students can resolve problems and encourage cooperation.
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.
A study investigates the potential of a Simple Inverse Yield Model (SIYM) for estimating plant-available water capacity in fields. The results show that measured plant-available water capacity correlates with corn yield better in dry years, but SIYM estimates are weaker in claypan soils.
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.
Purdue University researchers have proposed a way to incorporate deforestation into the international climate change treaty, titled Preservation Pathway. This approach would provide carbon credits for developing countries that set aside existing forests and slow deforestation rates.
Donald R. Nielsen, University of California-Davis professor, is recognized for his groundbreaking work in linking theory with field measurements and spatial variability of agricultural soils. He has guided 37 students through graduate degrees and authored over 300 scientific publications.
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.
Purdue University researchers found that manufactured nanoparticles, known as Buckyballs, do not affect microbes that break down organic substances in wastewater. The study's lead author notes that the microbes' resiliency to high Buckyball levels is an important finding for assessing environmental behavior of nanomaterials.
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...
The American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America recognize 36 outstanding undergraduate seniors for their academic achievements, leadership, and participation. The students receive a plaque and become eligible for the Frank D. Keim Fellowship.
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.
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.
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.
In a study published in the Agronomy Journal, Chris Kucharik found that earlier planting dates have contributed significantly to yield gains in the northern Corn Belt states. The study suggests that this land management change has played a major role in increasing production, accounting for 20-50% of the gains since 1979.
Researchers at Iowa State University contributed to the draft sequence of the corn genome, providing valuable data for plant scientists to improve crops. The genome's complexity, with 2.5 billion base pairs and repetitive code, was overcome using advanced software technology, enabling faster assembly and analysis.
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.