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Penner, D
Barker, D
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Authors
Hankinson, M
Lindsey, L.E
Barker, D
Culman, S
Kassel, P
Sawyer, J.E
Haden, D
Barker, D
Bernards, M.L
Thelen, K.D
Penner, D
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Type
Oral
Year
2014
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2004
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1. Effect of Starter Fertilizer and Plant Date on Soybean Growth, Nodulation, and Yield

Environmental conditions at the time of planting are a crucial determinant to soybean (Glycine max) yield potential. In recent years, it has become common in Ohio to begin planting earlier in the growing season, as soon as mid- or late-April in some cases. However, soil conditions are typically cooler and wetter at this time as opposed to later planting dates, and nutrient availability may be limited. When planting soybeans into cool and wet soil, the application of a starter fertilizer may be beneficial...

2. Soil pH and Corn-Soybean Rotation Yield Responses to Limestone Applications and Tillage

Farmers growing corn and soybean in northwest Iowa must carefully consider liming needs and economics. This is because of high liniestone material cost and the fact that soils in northwest Iowa have high pH subsoil, which can moderate negative effects of acid surface soils. Another factor that must be considered is the variable effect from limestone mixing depth associated with different tillage systems. An experiment designed to evaluate six rates of aglime (0 to 6,000 Iblacre of effective calcium...

3. Tank-Mixing Micronutrients Fertilizers with Glyphosate- Potential Problem or Efficient Solutions

TANK-MIXING MICRONUTRIENT FERTILIZERS WITH GLYPHOSATE - POTENTML PROBLEM OR EFFICIENT SOLUTION Mark L. Bernards, Kurt D. Thelen, Donald Penner Michlgan State University, East Lansing, MI Summary: Many agribusinesses are currently promoting the application of micronutrient foliar fertilizers in tank-mixtures with glyphosate for increased efficiency in glyphosate-resistant soybean production. This practice is inconsistellt with data which shows decreased glyyhosate efficacy in the presence of the hard-water...