Abstract
Abstract Conservation tillage has been widely recommended for implementation in the U.S. for its environmental benefits. The effect of conservation tillage on crop yield is a subject of continued concern amongst farmers who have not adopted the practice. Previous empirical research on the yield performance of conservation tillage is largely limited to field trials, while observational studies remain scant. This article estimates the effects of conservation tillage on county average corn and soybean yields using remotely-sensed tillage practice adoption data in 646 counties across 12 Corn Belt states from 2005 to 2018. Exploiting deviations from county-specific means in the data, we find no evidence that conservation tillage negatively affects corn or soybean yields. We also find that it can mitigate the impact of drought on soybean yields. We explore how wider use of conservation tillage might offset the increase in drought-induced downside risk to soybean yields under climate change projections from five global climate models.
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The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 3
Claim · model-written summary
Conservation tillage showed no evidence of negatively affecting corn or soybean yields.
- Taxon
- corn or soybean
Glycine max
Zea mays subsp. mayse1 - Treatment
- conservation tillagee1
- Outcome
- corn or soybean yieldse1
- Direction
- no_changeinferrede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“we find no evidence that conservation tillage negatively affects corn or soybean yields”
Claim · model-written summary
Conservation tillage can mitigate the impact of drought on soybean yields.
- Taxon
- soybeanGlycine maxe2
- Treatment
- conservation tillagee1
- Outcome
- impact of drought on soybean yieldse2
- Direction
- mitigatee2
- Qualifier
- cane2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“This article estimates the effects of conservation tillage on county average corn and soybean yields”
e2“We also find that it can mitigate the impact of drought on soybean yields”
Claim · model-written summary
Wider use of conservation tillage might offset the increase in drought-induced downside risk to soybean yields under climate change projections.
- Taxon
- soybeanGlycine maxe3
- Treatment
- wider use of conservation tillagee3
- Outcome
- drought-induced downside risk to soybean yieldse3
- Direction
- offsete3
- Qualifier
- mighte3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“This article estimates the effects of conservation tillage on county average corn and soybean yields”
e3“We explore how wider use of conservation tillage might offset the increase in drought-induced downside risk to soybean yields under climate change projections”
The same questions in other papers
tillage · yield · Glycine max (soybean)Positive and negative results
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- positive
- no effect
- no effect
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See all 390 papers →tillage · yield · Zea mays (maize)Positive and negative results
286 papers in the same direction as this paper · 812 in the opposite direction
- positive
- positive
- positive
1,095 papers more in this group
See all 1,099 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.