You searched for:
Keyword
"Upendra M. Sainju"
Remove constraint Keyword: "Upendra M. Sainju"
PubAg
Main content area
Limit your search
Search
89 Search Results
« Previous |
1 - 20 of 89
|
Next »
Search Results
- Author:
- Upendra M. Sainju, et al. ; Rajan Ghimire; Sadikshya Dangi; Show all 3 Authors
- Source:
- Science of the total environment 2021 v.775 pp. 145902
- ISSN:
- 0048-9697
- Subject:
- Pisum sativum; Triticum aestivum; arid lands; carbon; carbon dioxide; climate change; crop rotation; environment; fertilizer rates; methane; nitrogen; semiarid zones; soil; soil carbon; spring; spring wheat; Great Plains region
- Abstract:
- ... Quantifying soil CO₂ and CH₄ emissions and C balance under dryland cropping systems in arid and semiarid regions is needed to understand their contributions to climate change. The objective of this study was to examine the effect of crop rotation and N fertilization rate on soil CO₂ and CH₄ fluxes and C balance under dryland farming from 2012 to 2016 in the northern Great Plains, USA. Treatments w ...
- DOI:
- 10.1016/j.scitotenv.2021.145902
- CHORUS:
- 10.1016/j.scitotenv.2021.145902
- https://doi.org/10.1016/j.scitotenv.2021.145902
- Author:
- Upendra M. Sainju, et al. ; Jun Wang; Xin Fu; Rajan Ghimire; Yu Jia; Fazhu Zhao; Show all 6 Authors
- Source:
- Applied soil ecology 2021 v.166 pp. 103992
- ISSN:
- 0929-1393
- Subject:
- Bacteroidetes; Gemmatimonadetes; Nitrospirae; Planctomycetes; Triticum aestivum; bacterial communities; beta-glucosidase; community structure; continuous cropping; enzyme activity; fertilizer application; grain yield; long term experiments; manure amendments; manure spreading; nitrogen; nitrogen fertilizers; nitrogen-phosphorus fertilizers; phosphorus fertilizers; soil bacteria; soil carbon; soil enzymes; soil organic matter; soil quality; winter wheat; xylan 1,4-beta-xylosidase; China
- Abstract:
- ... Soil bacterial community structure, enzyme activities and their relationships to soil carbon and nitrogen in response to long-term fertilization remain poorly understood. Therefore, the objective of this study was to evaluate soil carbon and nitrogen fractions, enzyme activity, and bacterial community structure at 0–15, 15–30, and 30–60 cm depths after 34-yr of continuous application of manure and ...
- Handle:
- 10113/7324513
- DOI:
- 10.1016/j.apsoil.2021.103992
- https://doi.org/10.1016/j.apsoil.2021.103992
- Author:
- Upendra M. Sainju, et al. ; Ihsan Muhammad; Jun Wang; Shaohong Zhang; Fazhu Zhao; Ahmad Khan; Show all 6 Authors
- Source:
- Geoderma 2021 v.381 pp. 114696
- ISSN:
- 0016-7061
- Subject:
- Actinobacteria; Gram-negative bacteria; Gram-positive bacteria; atmospheric precipitation; climatic factors; community structure; cover crops; edaphic factors; fungal spores; legumes; meta-analysis; microbial biomass; microbial carbon; microbial colonization; microbial communities; microbial nitrogen; mycorrhizal fungi; phospholipid fatty acids; soil bacteria; soil quality; soil texture; species abundance; vesicular arbuscular mycorrhizae
- Abstract:
- ... Cover crops have been increasingly grown for improving soil health and crop production and minimizing environmental impact compared to no cover crop. Systematic documentation of cover cropping effects on soil microbial abundance and community structure, however, is scarce. A meta-analysis including data from 81 available studies was conducted to elucidate the effect of “cover crop” versus “no cove ...
- Handle:
- 10113/7106435
- DOI:
- 10.1016/j.geoderma.2020.114696
- https://doi.org/10.1016/j.geoderma.2020.114696
- Author:
- Upendra M. Sainju, et al. ; Jalal D. Jabro; William B. Stevens; William M. Iversen; Brett L. Allen; Show all 5 Authors
- Source:
- Soil & tillage research 2021 v.206 pp. 104842
- ISSN:
- 0167-1987
- Subject:
- Glycine max; Zea mays; bulk density; conventional tillage; corn; crop rotation; disturbed soils; gravimetric water content; intensive cropping; no-tillage; sandy loam soils; soil density; soil strength; soybeans
- Abstract:
- ... Tillage practices may have a profound impact on both soil environment and agricultural productivity. A field study was carried out from 2013 to 2019 to investigate the effect of no-till (NT) and conventional tillage (CT) on soil cone index (CI), bulk density (ρb), and gravimetric water content (θₘ) in a 2-yr corn (Zea mays L.)-soybean (Glycine max [L.]) rotation on a Lihen sandy loam. The study wa ...
- Handle:
- 10113/7160757
- DOI:
- 10.1016/j.still.2020.104842
- https://doi.org/10.1016/j.still.2020.104842
- Author:
- Upendra M. Sainju, et al. ; Rajan Ghimire; Umakant Mishra; Sindhu Jagadamma; Show all 4 Authors
- Source:
- Nutrient cycling in agroecosystems 2020 v.116 no.3 pp. 381-395
- ISSN:
- 1385-1314
- Subject:
- Pisum sativum; Triticum aestivum; arid lands; crop rotation; emissions factor; fertilizer rates; grain yield; greenhouse gas emissions; nitrogen; nitrogen fertilizers; nitrous oxide; nitrous oxide production; nutrient use efficiency; snowmelt; spring wheat
- Abstract:
- ... Recent interests in improving agricultural production while minimizing environmental footprints emphasized the need for research on management strategies that reduce nitrous oxide (N₂O) emissions and increase nitrogen-use efficiency (NUE) of cropping systems. This study aimed to evaluate N₂O emissions, annualized crop grain yield, emission factor, and yield-scaled- and NUE-scaled N₂O emissions und ...
- DOI:
- 10.1007/s10705-020-10046-0
- https://doi.org/10.1007/s10705-020-10046-0
- Author:
- Upendra M. Sainju, et al. ; Xin Fu; Jun Wang; Wenzhao Liu; Show all 4 Authors
- Source:
- Canadian journal of soil science 2019 v.99 no.4 pp. 367-379
- ISSN:
- 1918-1841
- Subject:
- Triticum aestivum; Zea mays; arid lands; microaggregates; mulching; nitrogen; plastic film; plastic film mulches; soil aggregation; soil organic carbon; straw; straw mulches; total nitrogen; winter wheat; China
- Abstract:
- ... The influence of surface mulching on soil aggregation and associated carbon (C) and nitrogen (N) varies by mulching materials and crop types. The 6 yr effect of straw mulching (SM), plastic film mulching (PM), and no mulching (CK) on soil aggregation and associated C and N concentrations at 0–20 and 20–40 cm soil layers were studied under dryland winter wheat (Triticum aestivum L.) and spring corn ...
- DOI:
- 10.1139/cjss-2019-0015
- https://doi.org/10.1139/cjss-2019-0015
- Author:
- Upendra M. Sainju, et al. ; Xin Fu; Jun Wang; Wenzhao Liu; Show all 4 Authors
- Source:
- Soil & tillage research 2019 v.186 pp. 42-51
- ISSN:
- 0167-1987
- Subject:
- Eleusine coracana; Medicago sativa; Onobrychis viciifolia; Pisum sativum; Solanum tuberosum; Triticum aestivum; Zea mays; alfalfa; ammonium nitrogen; continuous cropping; corn; crop rotation; fallow; microbial biomass; mineralization; nitrate nitrogen; nitrogen; peas; soil; winter wheat; China
- Abstract:
- ... Long-term crop rotation may influence soil N storage, mineralization, and availability. We studied the 30 yr effect of crop rotations on soil N fractions at 0–15 and 15–30 cm depths in the Loess Plateau of China. Crop rotations were continuous winter wheat (Triticum aestivum L.) (W), corn (Zea mays L.)-winter wheat-winter wheat-millet (Eleusine coracana L.) (CWWM), pea (Pisum sativum L.)-winter wh ...
- Handle:
- 10113/6178917
- DOI:
- 10.1016/j.still.2018.10.004
- https://doi.org/10.1016/j.still.2018.10.004
8. Soil microbial community and carbon and nitrogen fractions responses to mulching under winter wheat
- Author:
- Upendra M. Sainju, et al. ; Xin Fu; Jun Wang; Fazhu Zhao; Wenzhao Liu; Show all 5 Authors
- Source:
- Applied soil ecology 2019 v.139 pp. 64-68
- ISSN:
- 0929-1393
- Subject:
- Actinobacteria; Firmicutes; Nitrospirae; Zygomycota; arid lands; carbon; community structure; fungal communities; fungi; microbial biomass; mineralization; mulching; nitrogen; plastic film mulches; soil bacteria; soil carbon; soil depth; straw mulches; winter wheat; China
- Abstract:
- ... Mulching enhances soil C and N fractions compared to no mulching, but its impact on soil microbial communities and their relations to C and N fractions with mulching are not clear. We studied the 9-yr effect of no mulching (CK), straw mulching (SM), and plastic film mulching (PM) on soil bacterial and fungal community structure and their relationships to soil C and N fractions under dryland winter ...
- DOI:
- 10.1016/j.apsoil.2019.03.018
- https://doi.org/10.1016/j.apsoil.2019.03.018
- Author:
- Upendra M. Sainju, et al. ; Rajan Ghimire; Binod Ghimire; Abdel O. Mesbah; Omololu J. Idowu; Show all 5 Authors
- Source:
- Agronomy journal 2019 v.111 no.4 pp. 2108-2115
- ISSN:
- 0002-1962
- Subject:
- Avena sativa; Brassica napus; Hordeum vulgare; Pisum sativum; Raphanus sativus; Triticum aestivum; Vicia villosa; agronomy; barley; biomass; canola; cover crops; fallow; forage; nitrogen; oats; peas; radishes; soil organic carbon; soil quality; soil water content; total nitrogen; winter wheat
- Abstract:
- ... Cover cropping has a potential to improve soil health in semiarid regions. This research evaluated the effects of spring-planted cover crops on selected soil health indicators in limited-irrigated winter wheat (Triticum aestivum L.)–fallow system. Soil health parameters measured include soil water content (SWC), soil organic carbon (SOC), soil total nitrogen (STN), potentially mineralizable carbon ...
- DOI:
- 10.2134/agronj2018.08.0492
- https://doi.org/10.2134/agronj2018.08.0492
- Author:
- Upendra M. Sainju
- Source:
- MethodsX 2017 v.4 pp. 199-208
- ISSN:
- 2215-0161
- Subject:
- agricultural productivity; agroecosystems; air quality; ammonium; atmospheric deposition; biomass; crop yield; denitrification; fertilizer rates; gas emissions; greenhouse gases; irrigation water; leaching; mineralization; nitrogen; nitrogen balance; nitrogen fertilizers; nitrogen fixation; nitrous oxide; runoff; soil; soil nutrient balance; volatilization
- Abstract:
- ... Nitrogen balance in agroecosystems provides a quantitative framework of N inputs and outputs and retention in the soil that examines the sustainability of agricultural productivity and soil and environmental quality. Nitrogen inputs include N additions from manures and fertilizers, atmospheric depositions including wet and dry depositions, irrigation water, and biological N fixation. Nitrogen outp ...
- Handle:
- 10113/5763049
- DOI:
- 10.1016/j.mex.2017.06.001
- PubMed:
- 28725573
- PubMed Central:
- PMC5503880
- https://doi.org/10.1016/j.mex.2017.06.001
- Author:
- Upendra M. Sainju, et al. ; Jay D. Jabro; William M. Iversen; William B. Stevens; Brett L. Allen; Show all 5 Authors
- Source:
- Applied engineering in agriculture 2019 v.35 no.3 pp. 293-300
- ISSN:
- 0883-8542
- Subject:
- Glycine max; Zea mays; conventional tillage; corn; cropping systems; drainage; drainage water; drinking water; environmental quality; groundwater; irrigation management; leaching; lysimeters; nitrate nitrogen; nitrates; no-tillage; poly(vinyl chloride); sandy loam soils; soybeans; surface area; Great Plains region
- Abstract:
- ... High levels of nitrate-nitrogen (NO(3)-N) in the nation‘s groundwater are a significant environmental concern. To date no studies have yet evaluated the effects of various tillage practices on percolated drainage and NO(3)-N fluxes below the rootzone of cropping systems in the northern Great Plains. A field study was conducted to examine and compare the effect of no-tillage (NT) and conventional t ...
- DOI:
- 10.13031/aea.13127
- https://doi.org/10.13031/aea.13127
- Author:
- Upendra M. Sainju, et al. ; Andrew W. Lenssen; Brett L. Allen; Jalal D. Jabro; William B. Stevens; Show all 5 Authors
- Source:
- Agrosystems, geosciences & environment 2019 v.2 no.1 pp. -
- ISSN:
- 2639-6696
- Subject:
- Brassica napus; Linum usitatissimum; Pisum sativum; Triticum turgidum; arid lands; biomass production; conventional tillage; crop rotation; durum wheat; fallow; fertilizer application; grain protein; grain yield; harvest index; nitrogen; nitrogen fertilizers; no-tillage; nutrient uptake; peas; plant height; seed weight; semiarid zones; stubble; Great Plains region; United States
- Abstract:
- ... Dryland pea (Pisum sativum L.) is an important pulse crop that can replace fallow or be added to existing crop rotations to sustain crop yields in arid and semiarid regions. Yet, we lack management practices to enhance yield and quality of dryland pea. This study evaluated the effect of crop rotation and cultural practices on dryland pea growth, yield, and quality from 2006 to 2011 in the northern ...
- DOI:
- 10.2134/age2018.10.0041
- https://doi.org/10.2134/age2018.10.0041
- Author:
- Upendra M. Sainju, et al. ; Ihsan Muhammad; Fazhu Zhao; Ahmad Khan; Rajan Ghimire; Xin Fu; Jun Wang; Show all 7 Authors
- Source:
- Soil & tillage research 2019 v.192 pp. 103-112
- ISSN:
- 0167-1987
- Subject:
- biomass; carbon dioxide; carbon nitrogen ratio; carbon sequestration; cash crops; clay loam soils; cover crops; crop residues; ecosystem services; environmental quality; greenhouse gas emissions; greenhouse gases; leaching; legumes; meta-analysis; nitrous oxide; sandy clay loam soils; silt loam soils; silty clay loam soils; soil organic carbon; soil quality; total nitrogen
- Abstract:
- ... Cover crops provide multiple agronomic and environmental benefits, such as enhanced soil carbon sequestration, aggregation, water infiltration, and reduced erosion and nutrient leaching compared with no cover crop. However, little is known regarding the effect of cover crop species, biomass quality and quantity, and method of residue placement on greenhouse gas (GHG) emissions. Using meta-analysis ...
- DOI:
- 10.1016/j.still.2019.04.020
- https://doi.org/10.1016/j.still.2019.04.020
- Author:
- Upendra M. Sainju, et al. ; Jun Wang; Xin Fu; Fazhu Zhao; Show all 4 Authors
- Source:
- Biology and fertility of soils 2018 v.54 no.4 pp. 423-436
- ISSN:
- 0178-2762
- Subject:
- Triticum aestivum; aboveground biomass; arid lands; carbon sequestration; fallow; grain yield; growing season; microbial biomass; mineralization; mulching; soil organic carbon; soil water; straw mulches; summer; wheat straw; winter wheat; China
- Abstract:
- ... Straw mulching has been used to conserve soil water and sustain dryland crop yields, but the impact of the quantity and time of mulching on soil C fractions are not well documented. We studied the effects of various amounts and times of wheat (Triticum aestivum L.) straw mulching on soil C fractions at 0–10- and 10–20-cm depths from 2009 to 2017 in the Loess Plateau of China. Treatments were no mu ...
- DOI:
- 10.1007/s00374-018-1271-z
- https://doi.org/10.1007/s00374-018-1271-z
- Author:
- Upendra M. Sainju, et al. ; Jun Wang; Xin Fu; Fazhu Zhao; Show all 4 Authors
- Source:
- Soil Science Society of America journal 2018 v.82 no.2 pp. 371-381
- ISSN:
- 0361-5995
- Subject:
- Zea mays; aboveground biomass; arid lands; autumn; carbon sequestration; corn; cropping systems; grain yield; microbial biomass; mineralization; mulching; plastic film; plastic film mulches; root growth; root residues; soil; soil organic carbon; soil sampling; straw; straw mulches; China
- Abstract:
- ... Stimulation of root growth from mulching may enhance soil C fractions under maize (Zea mays L.). We studied the 5-yr straw (SM) and plastic film (PM) mulching effect on soil C fractions and maize yield compared with no mulching (CK) in the Loess Plateau of China. Soil samples collected from 0- to 10- and 10- to 20-cm depths after maize harvest in the fall, 2011 to 2015, were analyzed for soil orga ...
- DOI:
- 10.2136/sssaj2017.11.0397
- https://doi.org/10.2136/sssaj2017.11.0397
- Author:
- Upendra M. Sainju, et al. ; Jun Wang; Rajan Ghimire; Xin Fu; Wenzhao Liu; Show all 5 Authors
- Source:
- Agricultural water management 2018 v.206 pp. 95-101
- ISSN:
- 0378-3774
- Subject:
- Triticum aestivum; aboveground biomass; arid lands; evapotranspiration; fallow; grain yield; harvest index; mulching; planting; seedlings; soil water; soil water storage; straw mulches; summer; water use efficiency; wheat straw; winter wheat; China
- Abstract:
- ... Straw mulching is widely used to conserve soil water and increase crop yields. The effects of wheat straw mulching rate and method on dryland soil water storage, winter wheat (Triticum aestivum L.) growth and yield, and water-use efficiency (WUE) were examined from 2008 to 2015 in the Loess Plateau of China. Treatments included wheat straw mulching at a high rate of 9000 kg ha−1 (HSM) and low rate ...
- Handle:
- 10113/5974032
- DOI:
- 10.1016/j.agwat.2018.05.004
- https://doi.org/10.1016/j.agwat.2018.05.004
- Author:
- Upendra M. Sainju
- Source:
- Plos One 2016 v.11 no.2 pp. e0149005
- ISSN:
- 1932-6203
- Subject:
- barley; conventional tillage; crop quality; crop rotation; environmental quality; fallow; global warming; grain yield; greenhouse gases; malting barley; nitrate nitrogen; nitrogen fertilizers; no-tillage; peas; soil; soil organic carbon; sustainable agriculture; Montana; North Dakota
- Abstract:
- ... Little is known about management practices that can simultaneously improve soil and environmental quality and sustain crop yields. The effect of a combination of tillage, crop rotation, and N fertilization on soil C and N, global warming potential (GWP), greenhouse gas intensity (GHGI), and malt barley yield and quality were examined from 2005 to 2011 in eastern Montana and western North Dakota. I ...
- Handle:
- 10113/61899
- DOI:
- 10.1371/journal.pone.0149005
- PubMed:
- 26886932
- PubMed Central:
- PMC4757530
- https://doi.org/10.1371/journal.pone.0149005
- Author:
- Upendra M. Sainju
- Source:
- Plos One 2016 v.11 no.2 pp. e0148527
- ISSN:
- 1932-6203
- Subject:
- accounting; carbon dioxide; carbon sequestration; climatic factors; conventional tillage; crop residues; crop rotation; cropland; farms; fertilizer rates; global warming; greenhouse gas emissions; greenhouse gases; meta-analysis; methane; nitrogen fertilizers; nitrous oxide; no-tillage; soil; soil respiration
- Abstract:
- ... Management practices, such as tillage, crop rotation, and N fertilization, may affect net global warming potential (GWP) and greenhouse gas intensity (GHGI), but their global impact on cropland soils under different soil and climatic conditions need further evaluation. Available global data from 57 experiments and 225 treatments were evaluated for individual and combined effects of tillage, croppi ...
- Handle:
- 10113/61966
- DOI:
- 10.1371/journal.pone.0148527
- PubMed:
- 26901827
- PubMed Central:
- PMC4762896
- https://doi.org/10.1371/journal.pone.0148527
- Author:
- Upendra M. Sainju, et al. ; Hari P. Singh; Bharat P. Singh; Anuj Chiluwal; Rajesh Paudel; Show all 5 Authors
- Source:
- Agrosystems, geosciences & environment 2018 v.1 no.1 pp. -
- ISSN:
- 2639-6696
- Subject:
- Sorghum bicolor subsp. bicolor; Vicia villosa; ammonium nitrogen; autumn; bioenergy; biomass; cover crops; fertilizer application; forage; nitrate nitrogen; nitrogen; nitrogen fertilizers; rye; soil; soil organic carbon; soil sampling; total nitrogen; Southeastern United States
- Abstract:
- ... Sustaining soil C and N under bioenergy forage sorghum (Sorghum vulgare Pers.) may require cover crop C and N inputs. We evaluated the effect of cover crop (hairy vetch [Vicia villosa Roth], rye [Secaele cereale L.], hairy vetch–rye mixture, and the control [no cover crop]) and N rate (0 and 90 kg N ha–¹) to forage sorghum on soil C and N. Soil samples collected from the 0- to 30-cm depth after so ...
- DOI:
- 10.2134/age2018.03.0004
- https://doi.org/10.2134/age2018.03.0004
- Author:
- Upendra M. SAINJU, et al. ; Hari P. SINGH; Bharat P. SINGH; Show all 3 Authors
- Source:
- Pedosphere 2017 v.27 no.2 pp. 223-235
- ISSN:
- 1002-0160
- Subject:
- soil organic carbon; energy crops; carbon sequestration; Cenchrus purpureus; feedstocks; ammonium nitrogen; perennials; nitrate nitrogen; grasses; energy; Trifolium incarnatum; soil quality; soil; Saccharum spontaneum; nitrogen fertilizers; nitrogen; bioethanol; fertilizer rates; aboveground biomass; cover crops; Southeastern United States
- Abstract:
- ... Cover crop and nitrogen (N) fertilization may maintain soil organic matter under bioenergy perennial grass where removal of aboveground biomass for feedstock to produce cellulosic ethanol can reduce soil quality. We evaluated the effects of cover crops and N fertilization rates on soil organic carbon (C) (SOC), total N (STN), ammonium N (NH4-N), and nitrate N (NO3-N) contents at the 0–5, 5–15, and ...
- Handle:
- 10113/5652357
- DOI:
- 10.1016/S1002-0160(17)60312-6
- https://doi.org/10.1016/S1002-0160(17)60312-6