Articles tagged with Agroecosystems
A global survey of biodiversity experts finds that more species are threatened with extinction than previously thought, with estimates suggesting 30% of species have been lost since 1500. The study identifies climate change, pollution, and land-use changes as key drivers of biodiversity loss.
A recent study by Xi'an Jiaotong-Liverpool University provides a method to help farmers and policymakers decide whether organic farming is beneficial for the environment. The researchers analyzed international studies to find a threshold where organic farming's biodiversity gain outweighs its land requirements.
Researchers found that wetter pre-growing seasons reduced soil nitrogen through leaching, but applying more fertilizer can mitigate this effect. The model also showed that cold pre-growing season temperatures limited early growth in ways that affected yield potential, making extra fertilizer less effective.
Researchers found that short-term cover crop use cannot reverse decades of soil microbial dynamics in response to unsustainable practices. Long-term fertilization disrupted nitrogen cycling communities, while cover crops enhanced biodiversity but had both positive and negative effects on soil microbes.
The Ecological Society of America will hold its 107th Annual Meeting in Montreal from August 14-19, 2022. This year's meeting combines resources and interests of the ESA and Canadian Society for Ecology and Evolution, focusing on theme "A Change Is Gonna Come" exploring global environmental and evolutionary change.
Research reveals that climate change and drought can cause significant yield losses in soybeans, even with high levels of weed control. To mitigate this, farmers need to adopt integrated weed management strategies, including the use of soil-residual herbicides and late-maturing soybean varieties.
A new study reveals that leafcutter ants employ complex strategies to maximize the growth of their fungal
Researchers developed an estimation strategy to maximize accuracy while minimizing cost of soil carbon sampling, leveraging publicly available data. The new approach reduces the number of samples needed by up to 28% compared to random selection.
Illinois researchers identified two tropical corn germplasm lines showing promising levels of tar spot resistance, regardless of location. The study developed a new method for scoring tar spot incidence and severity, which will aid breeding programs. The findings suggest resistant hybrids are key to managing the disease long-term.
Researchers at University of Illinois develop new method to accurately estimate soil organic carbon using airborne and satellite hyperspectral sensing. The study leverages machine learning algorithms with a comprehensive soil spectral library, enabling large-scale monitoring of surface soil organic carbon.
Researchers engineered Azotobacter vinelandii to produce ammonia and excrete it into crop plants, reducing water pollution. This approach could mitigate environmental pollution and provide sustainable solutions for nitrogen management in soil.
A study by University of Illinois researchers found that applying dicamba at the latest growth stage and using a safener can help minimize injury to sweet corn. The results suggest that dicamba could be used safely in sweet corn with proper application timing and formulation, offering practical guidance for farmers.
New study reveals tradeoff between water quality and emissions on farms, highlighting potential environmental benefits of conservation practices. Researchers found that split nitrogen applications had no impact on nitrous oxide levels, but cover crops increased emissions by spikes in summer.
Researchers from the University of Illinois developed a system using hyperspectral sensors on planes to quickly and accurately detect nitrogen status in corn crops. The technology achieved up to 85% accuracy and has potential for use in satellites, enabling farmers to make informed decisions about nitrogen side-dressing.
Over 30,000 farms worldwide participate in On-Farm Experimentation (OFE), fostering locally-relevant knowledge and innovation. OFE's six guiding principles prioritize pragmatic collaboration between farmers, researchers, and industry partners to create directly applicable knowledge.
The study found that nitrogen fertilizer accelerated residue decomposition, producing more carbon dioxide and reducing the incorporation of residues into soil organic matter. This long-term problem can cause microbes to attack stable organic matter, leading to a decline in soil health.
A new global-scale analysis shows that phenological changes are lagging temperature change, especially in human-dominated landscapes. Human activities such as population density and land-use types play a key role in this mismatch.
Researchers have confirmed a Champaign County waterhemp population is resistant to dicamba, with a 65% control rate. The population shows signs of metabolic resistance, activating detoxification genes before the chemical can harm. This finding raises concerns about the potential for broader herbicide resistance.
Researchers will test inexpensive techniques to increase asymbiotic nitrogen fixation, aiming to reduce reliance on expensive certified organic fertilizers. The project aims to provide evidence for a cheap, effective, and sustainable form of nitrogen for organically managed crops.
Research in Borneo suggests that forest patches adjacent to palm oil plantations provide critical habitats for generalist species, including the Asian water monitor lizard. These refuges help maintain biodiversity in oil palm-dominated landscapes.
University of Illinois researchers discovered waterhemp's unique mechanism to detoxify the herbicide SA3, adding complexity to controlling this weed. This finding raises concerns about the potential for waterhemp to resist new herbicides before they are even commercialized.
A new University of Illinois study integrates field data and advanced mathematical modeling to understand how cover crops affect soil water, nitrogen, and oxygen dynamics. The research finds that proper management of cover crops can balance their benefits with cash crop yields, while ignoring the impacts without optimization.
New research explores conditions for humans and wolves to coexist peacefully in rural communities. Successful approaches to supporting communities have been identified, highlighting the importance of recognizing and celebrating traditional knowledge and skills in living alongside large carnivores.
A new model integrates advanced models and observational data to track carbon cycles in agroecosystems, validating its performance and demonstrating its potential for estimating different carbon components. This solution has the potential to advance precision agriculture and inform sustainable farming practices.
The US Department of Agriculture has awarded $6.7 million to research agroecosystems to improve food security and sustainability. The grants will focus on understanding the interactions between soil, water, plants, animals, and people in agricultural systems.
Researchers found that planting a multi-species mixture of cover crops increases ecosystem services, including weed suppression, nitrogen retention, and aboveground biomass. The study suggests that designing cover-crop mixes can lead to greater multifunctionality in agroecosystems.
A recent publication by Journal of Environmental Quality highlights the science behind antibiotic resistance in agroecosystems. Key findings include the widespread use of large quantities of antibiotics and animal waste leading to environmental contamination.
A study by Dr. Kristyn Harms and colleagues found that experiential learning significantly impacts students' ability to manage change in agroecosystems. The study identified key factors, including hands-on activities, emotional responses, and human interactions, that contribute to behavioral change.
Research finds higher ladybug richness and abundance in organic olive groves, indicating respect for environmental conditions. The study suggests that ladybugs can serve as a useful bioindicator for evaluating agroecosystem health and sustainability.