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9 April 2025 Perspectives on the economics of herbicide usage in corn and soybean production in the United States
Mandeep Singh, Amit J. Jhala
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Abstract

Uncontrolled weeds can cause billions of dollars in yield loss in corn and soybean production fields in the United States. Growers often use herbicides to control weeds to avoid yield loss. The objective of this study was to estimate the cost of herbicides used in corn and soybean production in the United States. On-farm herbicide usage data were extracted from surveys of corn production costs in 2021 and soybean production costs in 2023, carried out by the U.S. Department of Agriculture–National Agricultural Statistics Service (USDA-NASS) through the Agricultural Chemical Use Program. Commonly used or known products were assumed for each reported herbicide. Based on the USDA-NASS surveys, approximately 107.8 and 89.1 million kg of herbicides were used in corn and soybean production in 2021 and 2023, respectively, in the United States. Glyphosate (33.8 million kg; in various salt forms), atrazine (26.8 million kg), and mesotrione (2.4 million kg) were the most widely applied herbicides, applied to 79%, 65%, and 47% of corn production areas, respectively, planted in 2021. Similarly, glyphosate (in various salt forms) was the most widely applied herbicide in soybean production, followed by 2,4-D (15.9 million kg; in various salt forms) and glufosinate-ammonium (4.4 million kg), which were applied to 58% and 23% of soybean hectarage, respectively, planted in 2023. Using the average retail price of herbicide products from Kansas State University, University of Nebraska–Lincoln, and North Dakota State University publications, herbicides (excluding adjuvants and application costs) would have cost approximately US$3.2 and US$4.1 billion in corn and soybean production in 2021 and 2023, respectively.

Nomenclature: Atrazine; glyphosate; glufosinate; mesotrione; 2,4-D; corn; Zea mays L.; soybean; Glycine max (L.) Merr.

Mandeep Singh and Amit J. Jhala "Perspectives on the economics of herbicide usage in corn and soybean production in the United States," Weed Technology 39(1), 1-10, (9 April 2025). https://doi.org/10.1017/wet.2025.19
Received: 29 November 2024; Accepted: 21 February 2025; Published: 9 April 2025
KEYWORDS
corn
cost
economics
herbicides
soybean
survey
weeds
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