Year: 2015
Type: article
Abstract: Since 2000, soybean [Glycine max (L.) Merr] grain commodity price has increased by almost 300% generating interest in agricultural inputs to maximize soybean yield.The objective of this study was to evaluate the effect of common inputs on soybean grain yield in enhanced (high-input) and traditional (low-input) production systems.The inputs evaluated included: Rhizobia inoculant, gypsum, pyraclostrobin fungicide, lambda-cyhalothrin insecticide, and manganese (Mn) foliar fertilizer.A sixteen site-year trial was established in Ohio during 2013 and 2014.Rhizobia inoculant was seed applied before planting, gypsum was applied at the VC growth stage (unrolled unifoliate leaves), and fungicide, insecticide, and Mn foliar fertilizer were applied at the R3 growth stage (initial pod development).Measurements of percent leaf area affected by foliar disease and insect defoliation and Mn and sulfur (S) concentration in leaves were collected at six site-years.The omission of pyraclostrobin from the enhanced production system significantly reduced yield in five of sixteen site-years by 0.21 to 0.79 Mg ha -1 , but its addition to a traditional system increased yield significantly at only one of sixteen siteyears by 0.47 Mg ha -1 .Fields with high disease and above average yield (>3.5 Mg ha -1 ) that received over 25 cm of precipitation in June and July tended to be responsive to the fungicide application.During 2013 and 2014, with established corn/soybean rotations, no introducing me to pop freezes that would prove priceless in reviving me after a hot day of research, and showing me that I can accomplish anything with just the right amount of determination.I also thank my loving fiancée, Wayde Looker.He has been here for me through every step of the process, even from a thousand miles away, offering me lots of laughs and amazing encouragement.I would also like to thank my friends and faculty from Wilmington College for pushing me to do my very best.I also thank my friends and faculty at the Ohio State University.A special thank you is extended to my graduate advisor, Dr. Laura Lindsey.Laura is the best advisor I could have asked for.She was genuinely happy and excited for my successes, taught me professional skills that will prove valuable in my career, and became a friend.
Author: Grace M. Bluck
Institution: The Ohio State University
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: green
OpenAlex ID: W2611553280