Proceedings :: Great Plains Soil Fertility

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Assefa, Y.M

Akin, S.G

Andales, A

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Brown, A

Andales, A

Gates, T

Obour, A.K

Holman, J.D

Assefa, Y.M

Simon, L.M

Mauler, P

Akin, S.G

Arnall, B

Obour, A

Holman, J

Simon, L

Assefa, Y.M

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Oral

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2020

2022

2024

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Filter results4 paper(s) found.
1. Predicting Crop Yield Losses Due to Soil-water Salinity: Comparison of Traditional and Alternative Approaches It is estimated that 2,000 ha of cropland are taken out of production daily worldwide due to salinization and sodification. Salinity is estimated to result in economic losses of $27.3 billion U.S. dollars annually. Our project aims to jointly develop techniques for quantifying the severity of soil-water salinity and impacts on crop production on surface-irrigated fields in Pakistan’s Indus River Valley and the Lower Arkansas River Valley (LARV) in Colorado. The Fairmont Drainage District... A. Brown, A. Andales, T. Gates Download paper
2. Nitrogen Fertilizer Application and Depth of Moist Soil at Planting Affected Grain Sorghum Yield The depth of moist soil before planting is critical for grain crop production in intensified dryland cropping systems. We investigated depth of moist soil at planting and nitrogen (N) fertilizer application rate effects on continuous grain sorghum yields on a Crete silt loam soil over 32-years in western Kansas. Treatments were four N rates (0, 20, 40 and 60 lb ac-1) in a randomized complete blocks design with four replication and depth of moist soil at planting determined with Paul... A.K. Obour, J.D. Holman, Y.M. Assefa, L.M. Simon, P. Mauler Download paper
3. Analysis of 10 Years of N Rate and Timing Work in Oklahoma Winter Wheat This study was conducted to determine optimum top-dress nitrogen fertilizer rate by location and environment so it may be reproduced in following years. Winter wheat was planted in different locations each year starting in 2009. Each location had a treatment structure consisting of Preplant nitrogen rates ranging from 28.02kg/ac to 224.17kg/ac and top-dress nitrogen rates ranging from 28.02kg/ac to 140.11kg/ac. When top-dressing occurred there was two plots that had sensor based rates that used... S.G. Akin, B. Arnall Download paper
4. Soil Properties and Winter Wheat Nutrient Uptake As Affected by Long-term Tillage and Nitrogen Fertilization Knowledge gained on the long-term effects of crop management practices on soil fertility is critical in developing nutrient management strategies to optimize crop yields and environmental sustainability in semi-arid cropping systems. This study examined the long-term effects of nitrogen (N) fertilizer management and tillage intensity [conventional tillage (CT), and no-tillage (NT)] on soil properties and nutrient uptake in a dryland wheat-sorghum-fallow cropping system. Results showed winter wheat... A. Obour, J. Holman, L. Simon, Y.M. Assefa Download paper

Filter results4 paper(s) found.

1. Predicting Crop Yield Losses Due to Soil-water Salinity: Comparison of Traditional and Alternative Approaches

It is estimated that 2,000 ha of cropland are taken out of production daily worldwide due to salinization and sodification. Salinity is estimated to result in economic losses of $27.3 billion U.S. dollars annually. Our project aims to jointly develop techniques for quantifying the severity of soil-water salinity and impacts on crop production on surface-irrigated fields in Pakistan’s Indus River Valley and the Lower Arkansas River Valley (LARV) in Colorado. The Fairmont Drainage District... A. Brown, A. Andales, T. Gates

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2. Nitrogen Fertilizer Application and Depth of Moist Soil at Planting Affected Grain Sorghum Yield

The depth of moist soil before planting is critical for grain crop production in intensified dryland cropping systems. We investigated depth of moist soil at planting and nitrogen (N) fertilizer application rate effects on continuous grain sorghum yields on a Crete silt loam soil over 32-years in western Kansas. Treatments were four N rates (0, 20, 40 and 60 lb ac-1) in a randomized complete blocks design with four replication and depth of moist soil at planting determined with Paul... A.K. Obour, J.D. Holman, Y.M. Assefa, L.M. Simon, P. Mauler

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3. Analysis of 10 Years of N Rate and Timing Work in Oklahoma Winter Wheat

This study was conducted to determine optimum top-dress nitrogen fertilizer rate by location and environment so it may be reproduced in following years. Winter wheat was planted in different locations each year starting in 2009. Each location had a treatment structure consisting of Preplant nitrogen rates ranging from 28.02kg/ac to 224.17kg/ac and top-dress nitrogen rates ranging from 28.02kg/ac to 140.11kg/ac. When top-dressing occurred there was two plots that had sensor based rates that used... S.G. Akin, B. Arnall

Download paper

4. Soil Properties and Winter Wheat Nutrient Uptake As Affected by Long-term Tillage and Nitrogen Fertilization

Knowledge gained on the long-term effects of crop management practices on soil fertility is critical in developing nutrient management strategies to optimize crop yields and environmental sustainability in semi-arid cropping systems. This study examined the long-term effects of nitrogen (N) fertilizer management and tillage intensity [conventional tillage (CT), and no-tillage (NT)] on soil properties and nutrient uptake in a dryland wheat-sorghum-fallow cropping system. Results showed winter wheat... A. Obour, J. Holman, L. Simon, Y.M. Assefa

Download paper