Yared Assefa
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View article: Agronomic biofortification of wheat with zinc through co‐addition of organic carbon with zinc fertilizers
Agronomic biofortification of wheat with zinc through co‐addition of organic carbon with zinc fertilizers Open
Zinc malnutrition ranks fifth in terms of the leading cause of disease in developing countries. Agronomic biofortification is an effective way to increase micronutrient concentrations in grain crops. A greenhouse experiment was conducted t…
View article: Grain sorghum yield stability as affected by nitrogen fertilizer, tillage, and yield environment
Grain sorghum yield stability as affected by nitrogen fertilizer, tillage, and yield environment Open
As climate variability increases across the globe, understanding factors that affect grain sorghum ( Sorghum bicolor L. Moench) yield stability is crucial. Limited information is available on the impact of soil management such as tillage a…
View article: Economic value of dual‐purpose cowpea as affected by variety, fertilizer, and environment
Economic value of dual‐purpose cowpea as affected by variety, fertilizer, and environment Open
Across the semiarid regions of West Africa, cowpea ( Vigna unguiculata (L.) Walp) varieties grown by farmers are either grain‐ or forage‐only, and often fields are not fertilized. Information regarding profitability of dual‐purpose over tr…
View article: Forage rotation and tillage effects on soil physical and chemical properties
Forage rotation and tillage effects on soil physical and chemical properties Open
Annual forages can be grown more intensively than grain crops, which may have negative impacts on soil health because of biomass removal. The objective of this study was to determine the effects of annual forage crop rotations of varying i…
View article: Historic Grain Sorghum Production, Value, Yield Gap, and Weather Relation Trends
Historic Grain Sorghum Production, Value, Yield Gap, and Weather Relation Trends Open
There is limited information regarding the grain sorghum production trends from early in the millennium towards the 2020s. The main objective of this study was to quantify the grain sorghum production area, economic value, productivity, an…
View article: Winter wheat yield stability as affected by fertilizer‐N, tillage, and yield environment
Winter wheat yield stability as affected by fertilizer‐N, tillage, and yield environment Open
With an increase in the frequency of hot‐dry‐windy weather and reported significant increase in winter wheat ( Triticum aestivum L.) in‐season average temperatures, it is important to understand how soil management affects yield stability.…
View article: Soil, forage, and weed attributes following tillage in grazed no‐tillage triticale pasture
Soil, forage, and weed attributes following tillage in grazed no‐tillage triticale pasture Open
Grazing annual forages in dryland cropping systems has been used to integrate crop and livestock systems, rejuvenate soils, enhance in‐field nutrient cycling and soil organic carbon (SOC), and increase net returns by eliminating harvest ex…
View article: Nitrogen fertilizer source, rate, placement, and application timing effect on sorghum (grain and forage) and corn grain yields
Nitrogen fertilizer source, rate, placement, and application timing effect on sorghum (grain and forage) and corn grain yields Open
Identifying the limiting nutrient, fertilizer source, rate, placement, additives, and timing of application are critical components of fertilizer management. The objective of this study was to quantify the impact of nitrogen (N) fertilizer…
View article: Dual‐purpose cowpea grain and fodder yield response to variety, nitrogen–phosphorus–potassium fertilizer, and environment
Dual‐purpose cowpea grain and fodder yield response to variety, nitrogen–phosphorus–potassium fertilizer, and environment Open
Addressing the challenges of food and nutrition insecurity in sub‐Saharan Africa will require innovative agriculture production systems that support multiple objectives. Dual‐purpose cowpea [ Vigna unguiculata (L) Walp] varieties are expec…
View article: Cowpea residue management effect on productivity of subsequent millet in a legume‐cereal crop rotation
Cowpea residue management effect on productivity of subsequent millet in a legume‐cereal crop rotation Open
Growing cowpea ( Vigna unguiculate (L) Walp) in rotation with millet ( Pennisetum glaucum (L.) R. Br.) can increase millet productivity through biological nitrogen fixation. However, in Senegal, legume crop residues are generally removed f…
View article: Predicting Nutritional Quality of Dual-Purpose Cowpea Using NIRS and the Impacts of Crop Management
Predicting Nutritional Quality of Dual-Purpose Cowpea Using NIRS and the Impacts of Crop Management Open
Cowpea fodder has been one of the favored livestock forages for centuries in sub-Saharan Africa, particularly in Senegal. However, little research has been conducted on quantifying the nutritional quality of cowpea fodder because of the co…
View article: Soil chemical properties 12 years after termination of cattle manure and swine effluent applications
Soil chemical properties 12 years after termination of cattle manure and swine effluent applications Open
For how long the nutrient supply from long‐term application of manure and swine effluent will last to sustain crop production after applications had ceased is a research gap. We quantified the change in soil chemical properties 12 years af…
View article: Residue removal and nitrogen cycling in burn and non‐burn Kentucky bluegrass seed production systems
Residue removal and nitrogen cycling in burn and non‐burn Kentucky bluegrass seed production systems Open
Kentucky bluegrass ( Poa pratensis L.) postharvest residue in northern Idaho has historically been burned to maintain stand life and profitability. Alternatives to open field burning are necessary to reduce adverse impacts of burning on ai…
View article: Effects of residue management on arthropods populations under conservation agriculture
Effects of residue management on arthropods populations under conservation agriculture Open
Maize (Zea mays L.) production in South Africa by smallholder farmers is primarily hampered by several factors, including institutional constraints, soil degradation, low input production, and insect pest attacks. Conservation agriculture …
View article: Increasing Millet Planting Density with Appropriate Fertilizer to Enhance Productivity and System Resilience in Senegal
Increasing Millet Planting Density with Appropriate Fertilizer to Enhance Productivity and System Resilience in Senegal Open
Climate forecasts show increased frequency and intensity of drought in the semi-arid regions of west Africa, which negatively impacts food and nutrition security. Developing and improving resilient cropping systems will require adequate va…
View article: Nitrogen fertilizer and tillage intensity affected winter wheat macronutrient uptake and utilization efficiencies
Nitrogen fertilizer and tillage intensity affected winter wheat macronutrient uptake and utilization efficiencies Open
Application of N fertilizer and no‐tillage (NT) can increase winter wheat ( Triticum aestivum L) production through improvements in plant available soil water and nutrient availability. However, long‐term tillage and N management interacti…
View article: Nutritive value and net return of forage crop rotations in the central Great Plains
Nutritive value and net return of forage crop rotations in the central Great Plains Open
Sustainable forage‐based rotations with greater forage nutritive values and efficient resource utilization are needed to increase forage availability in the central Great Plains. The objectives of the study were to quantify nutritive value…
View article: Depth of Moist Soil at Planting Affected Grain Sorghum Response to Nitrogen Fertilizer
Depth of Moist Soil at Planting Affected Grain Sorghum Response to Nitrogen Fertilizer Open
The depth of moist soil before planting is a critical factor for grain crop production in dryland cropping systems. We investigated depth of moist soil at planting and nitrogen (N) fertilizer application effects on continuous grain sorghum…
View article: Wheat stubble height effects on subsequent corn and grain sorghum crops
Wheat stubble height effects on subsequent corn and grain sorghum crops Open
For sustainable productivity, a winter wheat ( Triticum aestivum L.)–summer crop (corn [ Zea mays L.] or grain sorghum [ Sorghum bicolor L.])–fallow (W‐SC‐F) cropping system could benefit from optimal wheat stubble cutting height managemen…
View article: Forage sorghum grown in a conventional wheat–grain sorghum–fallow rotation increased cropping system productivity and profitability
Forage sorghum grown in a conventional wheat–grain sorghum–fallow rotation increased cropping system productivity and profitability Open
Intensifying winter wheat ( Triticum aestivum)–grain sorghum [ Sorghum bicolor (L.) Moench]–fallow (W–GS–FL) crop rotation with annual forages can increase productivity and resource use efficiency. The objective of this research was to qua…
View article: Impact of simulated hail damage at different growth stages and canopy positions on rainfed and irrigated winter wheat
Impact of simulated hail damage at different growth stages and canopy positions on rainfed and irrigated winter wheat Open
Producers and crop insurance providers will benefit from an accurate assessment of yield reduction after hailstorms that considers crop management, weather, growth stage, and impacted part of crop (hail affected canopy position). But, limi…
View article: Socio-Economic Constraints of Adopting New Cowpea Varieties in Three Agro-Ecological Zones in the Senegalese Peanut Basin
Socio-Economic Constraints of Adopting New Cowpea Varieties in Three Agro-Ecological Zones in the Senegalese Peanut Basin Open
Socio-economic constraints like gender, education, age, and income significantly affect the adoption of improved agricultural technologies. The objective of this study was to determine socio-economic factors that affect the adoption of imp…
View article: Editorial: Crop response to density: Optimization of resource use to promote sustainability
Editorial: Crop response to density: Optimization of resource use to promote sustainability Open
EDITORIAL article Front. Plant Sci., 02 August 2022Sec. Crop and Product Physiology https://doi.org/10.3389/fpls.2022.969332
View article: Single and multispecies dual‐purpose cover crop productivity, nutritive value, and profitability
Single and multispecies dual‐purpose cover crop productivity, nutritive value, and profitability Open
Replacing long fallow periods with dual‐purpose forage cover crops increases productivity and profitability of dryland crop rotations. However, little information is available on specific forage cover crops mixtures that optimizes producti…
View article: Pre- and Post-anthesis Deficit Irrigation of Corn in the West Central Great Plains— Working with Less Water
Pre- and Post-anthesis Deficit Irrigation of Corn in the West Central Great Plains— Working with Less Water Open
Highlights Concentrating deficit irrigation during the post-anthesis period optimized grain yield and water productivity, while minimizing the seasonal irrigation amount. Corn grain yields were not greatly affected by deficit irrigation st…
View article: Burn and mechanical residue removal methods on production‐life of Kentucky bluegrass
Burn and mechanical residue removal methods on production‐life of Kentucky bluegrass Open
Given the importance of Kentucky bluegrass ( Poa pratensis L.) seed production in the inland Pacific Northwest, USA, and the difficulty to predict and maintain seed yields as production fields age, greater knowledge of the impact of reduce…
View article: Productivity and profitability with fallow replacement forage, grain, and cover crops in W‐S‐F rotation
Productivity and profitability with fallow replacement forage, grain, and cover crops in W‐S‐F rotation Open
Adoption of cover crops is greatly dependent on their effect on the productivity of the main crops and profitability of system. The objective of this study was to quantify effects of spring fallow replacement grain, forage, and cover crops…
View article: Rotation and tillage effects on forage cropping systems productivity and resource use
Rotation and tillage effects on forage cropping systems productivity and resource use Open
Limited information is available on what forage rotations and tillage practices increase forage productivity in the U.S. Great Plains region. The objectives of this study were to evaluate crop rotation and tillage effects on individual cro…
View article: Fallow replacement cover crops in a semi‐arid High Plains cropping system
Fallow replacement cover crops in a semi‐arid High Plains cropping system Open
Replacing portions of fallow between sorghum [ Sorghum bicolor (L.) Moench] harvest and wheat ( Triticum aestivum ) planting with cover crops provides opportunity to increase productivity and profitability in dryland winter wheat–sorghum–f…