Management strategies for early- and late-planted soybean in the north-central United States

Authors

Emma G. Matcham, University of Wisconsin-MadisonFollow
Spyridon Mourtzinis, Agstat Consulting, Athens, GreeceFollow
Shawn P. Colney, University of Wisconsin-MadisonFollow
Juan I. Rattalino Edreira, University of Nebraska - LincolnFollow
Patricio Grassini, University of Nebraska-LincolnFollow
Adam C. Roth, University of Wisconsin-Madison
Shaun N. Casteel, Purdue UniversityFollow
Igancio A. Ciampitti, Kansas State UniversityFollow
Hans J. Kandel, North Dakota State University--FargoFollow
Peter M. Kyveryga, Iowa Soybean AssociationFollow
Mark A. Licht, Iowa State UniversityFollow
Daren S. Mueller, Iowa State UniversityFollow
Emerson Nafziger, University of IllinoisFollow
Seth Naeve, University of MinnesotaFollow
Jordan D. Stanley, North Dakota State University--Fargo
Michael J. Staton, Michigan State UniversityFollow
Laura E. Lindsey, The Ohio State UniversityFollow

ORCID IDs

Emma G. Matcham https://orcid.org/0000-0002-9896-2253

Spyridon Mourtzinis https://orcid.org/0000-0002-7302-5482

Shawn P. Conley https://orcid.org/0000-0002-8413-1088

Juan I. Rattalino Edreira https://orcid.org/0000-0002-6192-4296

Hans J. Kandel https://orcid.org/0000-0001-7465-7249

Mark A. Licht https://orcid.org/0000-0001-6640-7856

Emerson D. Nafziger https://orcid.org/0000-0002-6578-1624

Jordan D. Stanley https://orcid.org/0000-0001-7883-6869

Laura E. Lindsey https://orcid.org/0000-0001-7026-0949

Date of this Version

2020

Citation

Matcham EG, Mourtzinis S, Conley SP, et al. Management strategies for early- and late-planted soybean in the north-central United States. Agronomy Journal. 2020;112:2928–2943. https://doi.org/10.1002/agj2.20289

Comments

This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License. © 2020 The Authors.

Abstract

It is widely recognized that planting soybean [Glycine max (L.) Merr.] early is critical to maximizing yield, but the influence of changing management factors when soybean planting is delayed is not well understood. The objectives of this research were to (a) identify management decisions that increase seed yield in either early- or late-planted soybean scenarios, and (b) estimate the maximum break-even price of each management factor identified to influence soybean seed yield in early- or late-planted soybean. Producer data on seed yield and management decisions were collected from 5682 fields planted with soybean during 2014−2016 and grouped into 10 technology extrapolation domains (TEDs) based on growing environment. A subsample of 1512 fields was classified into early- and late-planted categories using terciles. Conditional inference trees were created for each TED to evaluate the effect of management decisions within the two planting date timeframes on seed yield. Management strategies that maximized yield and associated maximum break-even prices varied across TEDs and planting date. For early-planted fields, higher yields were associated with artificial drainage, insecticide seed treatment, and lower seeding rates. For late-planted fields, herbicide application timing and tillage intensity were related to higher yields. There was no individual management decision that consistently increased seed yield across all TEDs.