A5078123044- Irrigation Practices and Water Management
- Climate change impacts on agriculture
- Plant Water Relations and Carbon Dynamics
- Plant responses to elevated CO2
- Soil Carbon and Nitrogen Dynamics
- Crop Yield and Soil Fertility
- Research in Cotton Cultivation
- Rice Cultivation and Yield Improvement
- Greenhouse Technology and Climate Control
- Soybean genetics and cultivation
- Agronomic Practices and Intercropping Systems
- Soil and Unsaturated Flow
- Hydrology and Watershed Management Studies
- Soil and Water Nutrient Dynamics
- Water-Energy-Food Nexus Studies
- Smart Agriculture and AI
- Climate variability and models
- Legume Nitrogen Fixing Symbiosis
- Soil Management and Crop Yield
- Water Quality Monitoring Technologies
- Atmospheric chemistry and aerosols
- Plant responses to water stress
- Water resources management and optimization
- Leaf Properties and Growth Measurement
- Soil Moisture and Remote Sensing
Agricultural Research Service
2016-2025
Management Research Institute
2023
United States Department of Agriculture
2015-2022
National Center for Cool and Cold Water Aquaculture
2020
Abstract Smallholder farmers in sub‐Saharan Africa (SSA) currently grow rainfed maize with limited inputs including fertilizer. Climate change may exacerbate current production constraints. Crop models can help quantify the potential impact of climate on yields, but a comprehensive multimodel assessment simulation accuracy and uncertainty these low‐input systems is lacking. We evaluated varying [CO 2 ], temperature rainfall conditions yield, for different nitrogen (N) (0, 80, 160 kg N/ha)...
Corn ( Zea mays L.) production in northeastern Colorado is constrained by a frost‐free period averaging 11 May to 27 September. For optimization of yield, planting at the appropriate time fit hybrid maturity length and growing season critical. Crop models could be used determine optimum windows for locality. We calibrated plant parameters Root Zone Water Quality Model (RZWQM) genetic coefficients CERES‐Maize model validated their performance against experimental data three corn hybrids...
Abstract Optimizing soil health through amendments is a promising strategy for enhancing rainwater efficiency stabilizing crop production. Biochar, obtained by torrefaction of sugarcane bagasse, byproduct from sugar mills, has high potential its use as amendment, which can boost yields, but needs further field trials adoption in farming systems. A study was conducted during 2019–2021 at Stoneville, Mississippi, to assess rainfed cotton ( Gossypium hirsutum L.) production under four biochar...
Abstract This study aimed to estimate mixed‐species cover crop (CC) biomass and nutrient contents using remote sensing, as ground‐based measurements are time‐consuming costly. Eleven CC treatments with varying grass‐legume proportions (GLP) were sampled, determined along multispectral imagery captured during the first fourth weeks of March week April 2023. Biomass N ( R 2 = 0.46–0.60) K% 0.41—0.71) decreased increasing GLP. The chlorophyll absorption ratio index normalized difference...
Anthropogenic activities continue to emit potential greenhouse gases (GHG) into the atmosphere leading a warmer climate over earth. Predicting impacts of change (CC) on food and fiber production systems in future is essential for devising adaptations sustain environmental quality. We used CSM-CROPGRO-cotton v4.6 module within RZWQM2 model predicting possible CC cotton (Gossypium hirsutum) lower Mississippi Delta (MS Delta) region USA. The scenarios were based an ensemble projections multiple...
Unique, variable summer climate of the lower Mississippi (MS) Delta region poses a critical challenge to cotton producers in deciding when plant for optimized production. Traditional 2–4 year agronomic field trials conducted this area fail capture effects long-term variabilities location developing reliable planting windows producers. Our objective was integrate four-year planting-date experiment at Stoneville, MS during 2005–2008 with data an agricultural system model and develop optimum...
Abstract Twin‐row planting in soybean ( Glycine max L.) has been proposed for optimizing resource use and seed yield. Experiments were conducted 2018 2019 on a Dundee silt loam to assess yield irrigation water efficiency (IWUE) response single‐row (SR) twin‐row (TR) geometries under rainfed (RF), all row or full (FI), alternate half irrigations (HI). Averaged across two crop years three regimes, TR enhanced by 13% over SR (4.5 vs. 4.0 Mg ha −1 ). The final plant stands established the FI,...
Abstract Background Cotton fiber quality and seed composition play vital roles in the economics of cotton production systems cottonseed meal industry. This research aimed to examine effects different irrigation levels planting geometries on ( Gossypium hirsutum L.). We conducted a 2-year study 2018 2019 warm, humid area Southeast United States Dundee silt loam soil. There were three treatments study. The included irrigating every furrow, or full (FI), alternate half (HI), no irrigation,...
Core Ideas No‐till land management (NT) decreases corn production in a humid climate. The reasons for reduced yield were investigated by integrating system models with experiments. Soil N deficiencies under NT possibly contributed to the decrease. Split application or enhancing rate can compensate decrease NT. We initiated long‐term experiment 2008 on 1.25‐ha farm‐scale plots assess impacts of no‐till full residue retention over conventional tillage (CT) irrigated ( Zea mays L.) Dundee silt...
The shallow Lower Mississippi River Valley Alluvial Aquifer, which supports irrigated agriculture in the Delta (LMD) region, is fast depleting from unsustainable water extractions for irrigations. survival of region today hinges on enhancing irrigation use efficiencies pumped out. Furrow practices (surface or flood irrigation) dominate LMD region's scenario. We investigated soybean productivity response to irrigations applied through every furrow (FI), alternate (AFI), and rainfed (RF, no...
Highlights Over the last 40 years amount of irrigation water used by cotton in United States has decreased while yields have increased leading to a large increase crop productivity (CWP). Many factors contributed improved CWP, such as improvements delivery systems. Irrigation scheduling technologies also CWP; however, farmer adoption advanced is still limited and there significant room for improvement. Increased from cultivars without an requirements been important CWP. Continued...
Rapid advances in electronics and communications technologies offer continuously evolving options for sensing awareness of the physical environment. Many these are becoming increasingly available to "non-professionals," that is, those without formal training or expertise disciplines such as electronic engineering, computer programming, sciences, via open-source concept. The concept collaboration sharing ideas offers advantages including low cost, ease use, extensive array offered, technical...
Addressing the challenges of dwindling groundwater resources and ever-increasing demands for water necessitate enhancing use efficiency (WUE) in irrigated agriculture. In a 2-year study, we examined effects different levels irrigation PG on lint yield WUE furrow cotton Dundee silt loam Mississippi Delta. The main plots were three regimes: irrigating every (FI), alternate (HI), no (RF) subplots two planting geometries (PG): single-row (SR) twin-row (TR). Across FI HI significant differences...
Abstract We assessed the potential profitability of twin‐row (TR) planting geometry as a water productivity‐enhancing practice and skip‐row irrigation (SRI) water‐conserving in furrow‐irrigated cotton ( Gossypium hirsutum L.) soybean Glycine max L.). Data from agronomic experiments carried on Dundee silt loam soils indicate that, average, TR increases by US$344 ha −1 for all‐row irrigated (ARI), $401 SRI, $334 rainfed (RF) cotton. For soybean, gains were $178 ARI irrigated, $121 RF....
Carbon dioxide (CO2) is the most abundant greenhouse gas (GHG) in atmosphere and substrate for photosynthetic fixation of carbohydrates plants. Increasing GHGs from anthropogenic emissions warming Earth’s atmospheric system at an alarming rate changing its climate, which can affect photosynthesis other biochemical reactions crop plants favorably or unfavorably, depending on plant species. For role carbon reduction reactions, CO2 concentration ([CO2]) air potentially enhances photosynthesis....
Agricultural research involves study of the complex soil–plant–atmosphere–water system, and data relating to this system must be collected under often-harsh outdoor conditions in agricultural environments. Rapid advancements electronic technologies last few decades, as well more recent widespread proliferation adoption sensing communications, have created many options address needs professional, amateur, researchers. In study, an project was undertaken collect examine effects different...
Soybean [Glycine max (L.) Merr.] and cotton (Gossypium hirsutum L.) are the major row crops in USA, growers tending toward twin-row system irrigation to increase productivity. In a 2-year study (2018 2019), we examined gas exchange chlorophyll fluorescence parameters better understand regulatory adaptive mechanisms of photosynthetic components soybean grown under varying levels irrigations planting geometries split-plot experiment. The main plots were three regimes: (i) all furrows (AFI),...