Mark A. Licht, Md. Rasel Parvej, Emily E. Wright
Core Ideas Row spacing narrower than 30-inches increases corn yield under high yielding conditions. Overall, the optimum plant population does not vary with changes to row spacing. Narrow row spacing tolerates plant density stress and, thereby, respond with increased yield. Corn (Zea mays L.) plante...
Fernando Marcos, Jyotsna Acharya, Md. Rasel Parvej, Alison E. Robertson et al.
Abstract Cover crops decrease nutrient leaching from high‐input cropping systems and improve soil quality. In Iowa, cereal rye (CR, Secale cereale L.) is the most adopted species due to its winter hardiness, high biomass productivity, and low cost. Field management of CR is still not completely unde...
Md. Rasel Parvej, Charles R. Hurburgh, H. Mark Hanna, Mark A. Licht
Abstract Delayed corn ( Zea mays L.) harvest after physiological maturity (PM) is a universal practice in the U.S. Corn Belt to reduce grain drying cost. However, corn yield is speculated to be lost due to kernel dry matter loss from seed respiration. We evaluated the impact of in‐field dry down on ...
Anna S. Williams, Md. Rasel Parvej, David Lee Holshouser, William Hunter Frame et al.
Core Ideas Soil K at 0‐ to 15‐ and 0‐ to 30‐cm depths were excellent predictors of full‐season soybean relative yield. Tissue‐K concentration can be used for calibrating fertilizer‐K rate and in‐season K management. Soil sampling to 30‐cm depth would reduce fertilizer amount and cost for soybean on ...
Md. Rasel Parvej, Nathan A. Slaton, Larry C. Purcell, Trenton L. Roberts
The critical K concentration in soybean [ Glycine max (L.) Merr.] has been determined only for leaf tissue at the R2 (full bloom) stage. Our research objective was to develop critical K concentrations in soybean for both leaves and petioles across reproductive stages. Fifteen fully‐expanded, uppermo...
Md. Rasel Parvej, David Lee Holshouser, Robert J. Kratochvil, Cory M. Whaley et al.
Abstract Double cropping winter wheat ( Triticum aestivum L.) and soybean [ Glycine max (L.) Merr.] increases total food production without additional land. However, yield and/or quality of both crops often suffer if wheat harvest is delayed beyond maturity. We evaluated the impact of high‐moisture ...
Md. Rasel Parvej, Anna S. Williams, David Lee Holshouser, William Hunter Frame et al.
Core Ideas Soil K at 0‐ to 15 and 0‐ to 30‐cm depths were excellent in predicting double‐crop soybean relative yield. Double‐crop soybean required more fertilizer K to maximize yield than current recommendations. Fertilizer‐K rate can be reduced if recommendations are made based on 0‐ to 30‐cm than ...
Md. Rasel Parvej, Nathan A. Slaton, M. Fryer, Trenton L. Roberts et al.
Core Ideas Seed‐K concentrations accounted for 60% of the variation in relative yield of unfertilized soybean for 100 site‐years in North America. The proposed deficient seed‐K concentration (<16.5 g kg −1 ) identified fields that responded positively to fertilizer K 77% of the time. Seed‐K conce...
Anna S. Williams, Md. Rasel Parvej, David Lee Holshouser, William Hunter Frame et al.
Core Ideas Soil K extracted by each processing method were similar and strongly correlated with relative yield. Soil K from FM, AD, and OD soils were equally good in predicting yield response to fertilizer‐K. Soil drying should not be an issue of concern in extracting soil K from soils in the US Mid...
Md. Rasel Parvej, David Lee Holshouser, Robert J. Kratochvil, Cory M. Whaley et al.
Abstract Double cropping soybean [ Glycine max (L.) Merr.] after winter wheat ( Triticum aestivum L.) increases total food production without additional land. However, double‐crop soybean usually yields less than full‐season soybean, mainly due to late planting. We evaluated double‐crop soybean grow...
Md. Rasel Parvej, David Lee Holshouser
Abstract Soybean [ Glycine max (L.) Merr.] after winter wheat ( Triticum aestivum L.) is the most common double‐cropping system in the United States, driven by the desire for increased cash flow and profits and bolstering global food security. Despite its popularity, double‐cropping often results in...
Mohammad Iftakhar Parvej, Mimma Tabassum, Md. Rasel Hossain
Bangladesh is a south Asian country speaking of which this country is not also free from such inhuman events named sexual harassment. Lack of family governance, lack of law enforcement, abuse of internet, lack of social awareness provokes the offenders to do such unsocial activities. In this basis t...
Md. Rasel Parvej, Shaun N. Casteel, Mark Zarnstorff, James H. Houx et al.
Abstract Soybean [ Glycine max (L.) Merr.] yield loss from hailstorms depends on the growth stage when hail occurs and the magnitude of plant damage. We evaluated how soybean canopy recovery, yield, and seed quality were affected by simulated hail damage in Iowa and Indiana from 2016 to 2018. Five l...
Md. Rasel Parvej, David Lee Holshouser
Abstract Selecting an appropriate relative maturity group (MG) soybean [ Glycine max (L.) Merr.] for a geographic location within a state is a crucial factor in ensuring profitable soybean production. Choosing an inappropriate MG can significantly reduce yield. We determined the probability of a rel...
Md. Rasel Parvej, Josh Copes, Syam K. Dodla, Peters Egbedi et al.
Abstract Phosphorus (P) management is pivotal for soybean [ Glycine max (L.) Merr.] productivity, yet overapplication can increase environmental risk. We conducted 61 site‐year field trials from 2020 to 2023 across Louisiana to evaluate soybean yield response to fertilizer‐P (triple superphosphate),...
A. Wahid, Md. Rasel Parvej, Md Enamul Haque Moni, Josh Copes et al.
Abstract Interest in liquid phosphorus (P) and potassium (K) fertilizers is increasing, often with claims of superior performance over dry‐granular sources. We compared yield and tissue‐nutrient responses of corn ( Zea mays L.) and soybean [ Glycine max (L.) Merr.] to dry versus liquid P and K. Fiel...
Md Enamul Haque Moni, Md. Rasel Parvej, A. Wahid, Md. Moklasur Rahman et al.
Abstract Identifying optimal fertilizer‐sulfur (S) sources is crucial for effective soil‐S fertility management. The study evaluated soybean [ Glycine max (L.) Merr.] yield and tissue‐S concentration responses to five fertilizer‐S sources, ammonium sulfate, Sul4r‐Plus/Gypsum, K‐Mag, Tiger90CR, and P...