Abstract
This research evaluated differences in yields and associated downside risk from using no‐till and tillage practices. Yields from 442 paired tillage experiments across the United States were evaluated with respect to six crops and environmental factors including geographic location, annual precipitation, soil texture, and time since conversion from tillage to no‐till. Results indicated that mean yields for sorghum [ Sorghum bicolor (L.) Moench] and wheat ( Triticum aestivum L.) with no‐till were greater than with tillage. In addition, no‐till tended to produce similar or greater mean yields than tillage for crops grown on loamy soils in the Southern Seaboard and Mississippi Portal regions. A warmer and more humid climate and warmer soils in these regions relative to the Heartland, Basin and Range, and Fruitful Rim regions appear to favor no‐till on loamy soils. With the exception of corn ( Zea mays L.) and cotton ( Gossypium hirsutum L.) in the Southern Seaboard region, no‐till performed poorly on sandy soils. Crops grown in the Southern Seaboard were less likely to have lower no‐till yields than tillage yields on loamy soils and thus had lower downside yield risk than other farm resource regions. Consistent with mean yield results, soybean [ Glycine max (L.) Merr.] and wheat grown on sandy soils in the Southern Seaboard region using no‐till had larger downside yield risks than when produced with no‐till on loamy soils. The key findings of this study support the hypothesis that soil and climate factors impact no‐till yields relative to tillage yields and may be an important factor influencing risk and expected return and the adoption of the practice by farmers.
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Claims 7
Claim · model-written summary
No-till sorghum mean yield exceeded tillage yield.
SorghumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mean yields for sorghum [ Sorghum bicolor (L.) Moench] and wheat ( Triticum aestivum L.) with no‐till were greater than with tillage”
Claim · model-written summary
No-till wheat mean yield exceeded tillage yield.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- no‐tille0
- Outcome
- mean yieldse0
- Direction
- greater thane0
- Comparator
- tillagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mean yields for sorghum [ Sorghum bicolor (L.) Moench] and wheat ( Triticum aestivum L.) with no‐till were greater than with tillage”
Claim · model-written summary
On loamy soils in two regions, no-till tended to give similar or greater mean crop yield than tillage.
Verbatim
e0“no‐till tended to produce similar or greater mean yields than tillage for crops grown on loamy soils in the Southern Seaboard and Mississippi Portal regions”
Claim · model-written summary
No-till performed poorly on sandy soils except for corn and cotton in the Southern Seaboard.
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- no‐tille0
- Outcome
- performed poorlye0
- Direction
- poorlye0
- Qualifier
- exception of corn ( Zea mays L.) and cotton ( Gossypium hirsutum L.)e0
- Setting
- Southern Seaboard regione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With the exception of corn ( Zea mays L.) and cotton ( Gossypium hirsutum L.) in the Southern Seaboard region, no‐till performed poorly on sandy soils”
Claim · model-written summary
Southern Seaboard crops on loamy soils had lower downside yield risk under no-till than crops in other regions.
Verbatim
e0“Crops grown in the Southern Seaboard were less likely to have lower no‐till yields than tillage yields on loamy soils and thus had lower downside yield risk than other farm resource regions”
Claim · model-written summary
No-till soybean on sandy Southern Seaboard soils had greater downside yield risk than on loamy soils.
- Taxon
- soybean
Glycine maxe0 - Outcome
- downside yield riskse0
- Direction
- largere0
- Comparator
- loamy soilse0
- Setting
- Southern Seaboard regione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soybean [ Glycine max (L.) Merr.] and wheat grown on sandy soils in the Southern Seaboard region using no‐till had larger downside yield risks than when produced with no‐till on loamy soils”
Claim · model-written summary
No-till wheat on sandy Southern Seaboard soils had greater downside yield risk than on loamy soils.
- Taxon
- wheatTriticum aestivume0
- Outcome
- downside yield riskse0
- Direction
- largere0
- Comparator
- loamy soilse0
- Setting
- Southern Seaboard regione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soybean [ Glycine max (L.) Merr.] and wheat grown on sandy soils in the Southern Seaboard region using no‐till had larger downside yield risks than when produced with no‐till on loamy soils”
The same questions in other papers
tillage · yield · SorghumResults differ
101 papers in the same direction as this paper · 17 in the opposite direction · 4 reporting no difference from an alternative
- positive
- positive
- positive
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See all 123 papers →tillage · yield · Triticum aestivum (wheat)Positive and negative results
1,115 papers in the same direction as this paper · 257 in the opposite direction · 41 reporting no difference from an alternative
- positive
- positive
- positive
1,410 papers more in this group
See all 1,414 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.