Amir Sadeghpour
A5082823182- Soil Carbon and Nitrogen Dynamics
- Crop Yield and Soil Fertility
- Soil and Water Nutrient Dynamics
- Agronomic Practices and Intercropping Systems
- Bioenergy crop production and management
- Agroforestry and silvopastoral systems
- Legume Nitrogen Fixing Symbiosis
- Weed Control and Herbicide Applications
- Allelopathy and phytotoxic interactions
- Ruminant Nutrition and Digestive Physiology
- Plant Parasitism and Resistance
- Biofuel production and bioconversion
- Forest Biomass Utilization and Management
- Soil and Unsaturated Flow
- Plant nutrient uptake and metabolism
- Phosphorus and nutrient management
- Landfill Environmental Impact Studies
- Soil Management and Crop Yield
- Seedling growth and survival studies
- Mycorrhizal Fungi and Plant Interactions
- Pesticide and Herbicide Environmental Studies
- Smart Agriculture and AI
- Potato Plant Research
- Dam Engineering and Safety
- Heavy Metal Exposure and Toxicity
Southern Illinois University Carbondale
2018-2024
University of Kurdistan Hewler
2023
University of Kurdistan
2023
Razi University
2023
Auburn University
2022
University of Kentucky
2022
Virginia Tech
2017-2020
Virginia Cooperative Extension
2020
North Carolina State University
2020
University of Kashan
2014-2018
Soil organic carbon (SOC) is closely tied to soil health. However, additional biological indicators may also provide insight about C dynamics and microbial activity. We used SOC the other (potential mineralization, permanganate oxidizable C, water extractable β-glucosidase enzyme activity) from North American Project Evaluate Health Measurements examine continental-scale drivers of these indicators, relationships among effects health practices on indicator values. All had greater values at...
Integrating cover crops into farming systems may contribute to meeting N demands of succeeding and therefore decrease fertilization environmental concerns. To study the trend released in buried (BR) surface residues (SR) three different a 2‐yr field experiment was conducted randomized complete block design on fine sandy loam. Forage radish ( Raphanus sativus L.) winter pea Pisum sativum subsp. arvense decomposition rate release were compared with cereal rye Secale cereale L.), as...
To assess the metals (Cr, Mn, Cu, Zn, Cd, Hg and Pb) pollution risks their transportation in sediment overlay water from typical reservoirs rapidly developing economic region of southeastern China, this study integrated an intact core incubation vertical distribution analysis a drinking reservoir (Drinking-Y) irrigation (Irrigation-T). The results revealed that both studied were severely polluted by heavy metals. Irrigation-T was at considerable risk compared to Drinking-Y (a moderate or...
Aggregate stability is a commonly used indicator of soil health because improvements in aggregate are related to reduced erodibility and improved soil–water dynamics. During the past 80 90 years, numerous methods have been developed assess stability. Limited comparisons among resulted varied magnitudes response management practices influences inherent properties climate. It not clear whether selection specific method creates any advantage investigator. This study assessed four measuring...
Drought stress is known as a major yield-limiting factor in crop production that threatens food security worldwide. Arbuscular mycorrhizal fungi (AMF) and titanium dioxide (TiO2) have shown to alleviate the effects of drought on plants, but information regarding their co-addition minimize plants scant. Here, two-year field experiment was conducted 2019 2020 evaluate influence different irrigation regimes fertilizer sources EO quantity quality sage (Salvia officinalis L.). The laid out split...
Abstract Currently accepted pedotransfer functions show negligible effect of management‐induced changes to soil organic carbon (SOC) on plant available water holding capacity (θ AWHC ), while some studies the ability substantially increase θ through management. The Soil Health Institute's North America Project Evaluate Measurements measured content at field using intact cores across 124 long‐term research sites that contained increases in SOC as a result management treatments such reduced...
This article provides an overview of the pivotal role played by manure in animal agriculture and circular economy. We delve into technological advancements policy frameworks that harness as a valuable resource for generating both fertilizer energy. Additionally, we explore future considerations integrating ecosystem marketplace, emphasizing its potential environmental sustainability. The discussion emphasizes critical need robust interdisciplinary collaboration involving researchers,...
Corn (Zea mays L.) grain is a major commodity crop in Illinois and its production largely relies on timely application of nitrogen (N) fertilizers. Currently, growers other neighboring states the U.S. Midwest use maximum return to N (MRTN) decision support system predict corn requirements. However, current tool does not factor implications integrating cover crops into rotation, which has recently gained attention among due several ecosystem services associated with cropping. A two-year field...
Abstract Farmers, scientists, and other soil health stakeholders require interpretable indicators of hydraulic function. Determining which to use has been difficult because measurement disconformity, spatial temporal variability, recently established treatments, the effect site characteristics on management practice differences. The North American Project Evaluate Soil Health Measurements includes 124 sites uniformly sampled across a range practices in America 2019. We compare recommend...
Abstract Various soil health indicators that measure a chemically defined fraction of nitrogen (N) or process related to N cycling have been proposed quantify the potential supply crops, key function. We evaluated five (total N, autoclavable citrate extractable water‐extractable organic potentially mineralizable and ‐acetyl‐β‐ D ‐glucosaminidase activity) at 124 sites with long‐term experiments across North America evaluating variety managements. found 59%–81% variation in was among sites,...
Abstract Winter cereal rye ( Secale cereale L.) (WCR) is often double cropped with maize for silage Zea mays to increase farm forage supply and profit. Spring nitrogen (N) fertilization WCR could influence its production quality at different harvesting times. Therefore, two on‐farm trials were conducted in the 2019–2020 2020–2021 growing seasons evaluate effect of time (late‐March end‐of‐April considering growth stage) spring N (0, 23, 47, 71 kg ha −1 ) on morphology, yield, nutrient...
Core Ideas Faba bean cover crops sown on 1 August accumulated up to 192 kg N ha –1 . Better synchrony between faba residue decomposition and uptake by sweet corn was achieved under NT management. Sweet yielded higher vs. CT system. On average, provided approximately 50 of subsequent requirements. The release trend winter‐killed ( Vicia L.) residues has not been previously investigated. A 2‐yr experiment conducted in 2013–2015 investigate potential accumulation fall‐grown as crop contribution...
Abstract Cover crops (CC) are versatile and have multifunctional benefits in crop rotations. An understanding of the effect tillage systems on cover residue decomposition nitrogen (N) release is essential cash production planning. We investigated rate N from cereal rye ( Secale cereale L.) hairy vetch Vicia villosa Roth.) CC no‐tillage (NT) reduced‐tillage (RT) under corn Zea mays L.)–soybean [ Glycine max (L.) Merr.] Litterbags were placed soil RT surface NT after termination April...
Potential carbon mineralization (Cmin) is a commonly used indicator of soil health, with greater Cmin values interpreted as healthier soil. While are typically in agricultural soils managed minimal physical disturbance, the mechanisms driving increases remain poorly understood. This study assessed bacterial and archaeal community structure potential microbial drivers maintained under various degrees disturbance. mineralization, 16S rRNA sequences, characterization data were collected part...
Attaining high switchgrass ( Panicum virgatum L.) yields with optimum quality for combustion while also maintaining crop health is challenging. A 3‐yr study was conducted at the Crops and Animal Research Education Farm of University Massachusetts in South Deerfield, MA, from 2009 to 2012 assess influence harvesting season N application rates on biomass yield, mineral content grass, non‐structural carbohydrate (NSC) reserves roots, as well nitrogen use efficiency (NUE) (cultivar Cave‐in‐Rock)...
Core Ideas Nitrogen application mid‐season cannot overcome drought stress later in the season. Except for crude protein, under‐application of N did not impact forage quality. Soil organic matter decreases a chisel‐disked corn silage system regardless fertilizer rate. Use compost, cover crops, and conservation tillage can offset soil losses. Under‐applying by 30 kg ha −1 was economically more detrimental than over‐applying. Under‐ or over‐application to ( Zea mays L.) has adverse economic...
Abstract In recent years, dairy farmers in semi‐arid regions have shifted from maize ( Zea mays L.) as their primary source of feed to drought‐tolerant crops, such millet Pennisetum glaucum L.), due lack water for irrigation. However, alone may not provide sufficient quality and crude protein content cows. A field experiment was conducted 2 years evaluate (i) whether intercropping with a relatively soya bean cultivar Glycine max Merr, cv. Williams) could improve silage minimum yield penalty,...
Shortage of irrigation water in arid and semi‐arid regions has forced forage producers to look for drought‐tolerant species silage production. To evaluate yield nutritive value pearl millet ( Pennisetum glaucum L.)–soybean [ Glycine max (L.) Merr.] intercrops as influenced by intercropping ratios N rates, a 2‐yr field experiment was conducted using split‐plot lay out on randomized complete block (RCB) design. Main plots consisted 0, 37, 74 kg ha –1 (N 0 , 37 respectively) soybean (50%M:50%S;...