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Soybean Yield Response in High and Low Input Production Systems

Bluck, Grace M
http://orcid.org/0000-0003-2043-4845
http://rave.ohiolink.edu/etdc/view?acc_num=osu1428078516

Abstract Details

2015, Master of Science, Ohio State University, Horticulture and Crop Science.
From 2000 to 2013 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 site-years by 0.47 Mg ha-1 Soybean yield was influenced by fungicide application when fields had disease present, above average yield (>3.5 Mg ha-1), and received >25 cm of precipitation in June and July. During 2013 and 2014, with established corn/soybean rotations, no S or Mn deficiencies, and minimal insect pressure, there were limited effects of inoculant, gypsum, insecticide, and Mn foliar fertilizer on grain yield. The data indicate a very small potential for high-input production systems to enhance crop yield without the presence of diseases, insects, or nutrient deficiencies. Knowledge of potential yield limiting factors is useful in identifying inputs that will increase soybean yield on a field by field basis.
Laura Lindsey (Advisor)
Anne Dorrance (Committee Member)
Jim Metzger (Committee Member)
167 p.
Agriculture; Agronomy; Plant Pathology; Plant Sciences
soybean; yield; inoculant; fungicide; insecticide; manganese; gypsum; soybean disease; pyraclostrobin; lambda-cyhalothrin; high input; agronomy; agriculture; Ohio agriculture; frogeye; brown spot

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Citations

  • Bluck, G. M. (2015). Soybean Yield Response in High and Low Input Production Systems [Master's thesis, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1428078516

    APA Style (7th edition)

  • Bluck, Grace. Soybean Yield Response in High and Low Input Production Systems. 2015. Ohio State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1428078516.

    MLA Style (8th edition)

  • Bluck, Grace. "Soybean Yield Response in High and Low Input Production Systems." Master's thesis, Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1428078516

    Chicago Manual of Style (17th edition)

osu1428078516
4,538
© 2015, some rights reserved.Creative Commons License Soybean Yield Response in High and Low Input Production Systems by Grace M Bluck is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. Based on a work at etd.ohiolink.edu.
This open access ETD is published by The Ohio State University and OhioLINK.