A machine learning interpretation of the contribution of foliar fungicides to soybean yield in the north-central United States.
| Autor: | Shah DA; Department of Plant Pathology, Kansas State University, Manhattan, KS, 66506, USA. dashah81@ksu.edu., Butts TR; Department of Crop, Soil, and Environmental Sciences, University of Arkansas System Division of Agriculture, Lonoke, AR, 72086, USA., Mourtzinis S; Agstat Consulting, Athens, Greece., Rattalino Edreira JI; Department of Agronomy and Horticulture, University of Nebraska-Lincoln, Lincoln, NE, 68583, USA., Grassini P; Department of Agronomy and Horticulture, University of Nebraska-Lincoln, Lincoln, NE, 68583, USA., Conley SP; Department of Agronomy, University of Wisconsin-Madison, Madison, WI, 53706, USA., Esker PD; Department of Plant Pathology and Environmental Microbiology, Pennsylvania State University, University Park, PA, 16802, USA. |
|---|---|
| Jazyk: | angličtina |
| Zdroj: | Scientific reports [Sci Rep] 2021 Sep 21; Vol. 11 (1), pp. 18769. Date of Electronic Publication: 2021 Sep 21. |
| DOI: | 10.1038/s41598-021-98230-2 |
| Abstrakt: | Foliar fungicide usage in soybeans in the north-central United States increased steadily over the past two decades. An agronomically-interpretable machine learning framework was used to understand the importance of foliar fungicides relative to other factors associated with realized soybean yields, as reported by growers surveyed from 2014 to 2016. A database of 2738 spatially referenced fields (of which 30% had been sprayed with foliar fungicides) was fit to a random forest model explaining soybean yield. Latitude (a proxy for unmeasured agronomic factors) and sowing date were the two most important factors associated with yield. Foliar fungicides ranked 7th out of 20 factors in terms of relative importance. Pairwise interactions between latitude, sowing date and foliar fungicide use indicated more yield benefit to using foliar fungicides in late-planted fields and in lower latitudes. There was a greater yield response to foliar fungicides in higher-yield environments, but less than a 100 kg/ha yield penalty for not using foliar fungicides in such environments. Except in a few production environments, yield gains due to foliar fungicides sufficiently offset the associated costs of the intervention when soybean prices are near-to-above average but do not negate the importance of disease scouting and fungicide resistance management. (© 2021. The Author(s).) |
| Databáze: | MEDLINE |
| Externí odkaz: |
|