Scholarlink

<p>Farmers in the USA have rapidly expanded the use of cover crops, with the national cover crop area nearly doubling since 2012. Despite many benefits that motivate public subsidies, questions remain about potential downsides. Here, using satellite observations from over 100,000 fields, half of which recently adopted cover crops, we demonstrate both positive and negative impacts of cover cropping, including: (1) declines in average yields for corn and soybean, by ~3% and ~2%, respectively; (2) delays in planting of corn (4 days) and soybean (2.5 days); and (3) reduced damages in the wet spring of 2019, with cover crop fields only half as likely to experience prevented planting as non-cover-crop fields. Cover cropping appears to reduce important aspects of farmer risk in wet conditions but increase them in dry conditions. Timely planting of the cash crop deserves emphasis moving forward, as we show eliminating planting delays would reduce yield penalties by roughly 50% for corn and 90% for soybean.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

The mixed effects of recent cover crop adoption on US cropland productivity

  • 期刊论文

  • 发表日期：

    2025年7月28日

查看全文
  • David B. Lobell,
  • Stefania Di Tommaso,
  • Qu Zhou,
  • Yuchi Ma,
  • James Specht,
  • Kaiyu Guan

摘要

Farmers in the USA have rapidly expanded the use of cover crops, with the national cover crop area nearly doubling since 2012. Despite many benefits that motivate public subsidies, questions remain about potential downsides. Here, using satellite observations from over 100,000 fields, half of which recently adopted cover crops, we demonstrate both positive and negative impacts of cover cropping, including: (1) declines in average yields for corn and soybean, by ~3% and ~2%, respectively; (2) delays in planting of corn (4 days) and soybean (2.5 days); and (3) reduced damages in the wet spring of 2019, with cover crop fields only half as likely to experience prevented planting as non-cover-crop fields. Cover cropping appears to reduce important aspects of farmer risk in wet conditions but increase them in dry conditions. Timely planting of the cash crop deserves emphasis moving forward, as we show eliminating planting delays would reduce yield penalties by roughly 50% for corn and 90% for soybean.