Abstract
Abstract Studies to compare the relative ability of a wide range of tillage and crop rotation combinations (3×3 factorial) to sustain corn ( Zea mays L.) production on several soils typical of Ohio were initiated in 1962. Soils were a well‐drained Wooster silt loam (Typic Fragiudalf), an imperfectly drained Crosby silt loam (Aeric Ochraqualf), a very poorly drained Hoytville silty clay loam (Mollic Ochraqualf), and a very poorly drained Toledo clay (Mollic Haplaquept). Tillage treatments were no‐tillage; plow and then plant; and plow, disk, and plant. Rotations were continuous corn, corn‐soybeans, ( Glycine max L.) (2 year), and corn‐oats ( Avena sativa L.)‐meadow (3 year) with each crop appearing each year in each rotation. Results are reported only for plots having equal plant density within a site‐year combination, and adequate weed control. Corn yields were remarkably insensitive to tillage. The two plowed treatments had equal yield for virtually all years at each site within the same rotation. The no‐tillage treatment averaged 975 kg/ha or 13% lower yield than the average of plowed treatments on the Mollic Ochraqualf soil for 10 years of continuous corn, but had the same yield as the plowed treatments for the other two rotations. The no‐tillage treatment averaged 750 kg/ha or 10% greater yield than the average of plowed treatments on the Typic Fragiudalf soil for 11 years of continuous corn or corn‐soybeans rotation. Otherwise tillage treatments generally produced the same corn yield within site‐rotation combinations.
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Claims 5
Claim · model-written summary
The two plowed treatments had equal corn yield within rotation and site.
- Taxon
- corn
Zea mays subsp. mayse1 - Treatment
- two plowed treatmentse0
- Outcome
- yielde0
- Direction
- equale0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The two plowed treatments had equal yield for virtually all years at each site within the same rotation”
e1“corn yields”
Claim · model-written summary
No-tillage reduced yield by 975 kg/ha or 13% versus plowing on Mollic Ochraqualf under continuous corn.
- Taxon
- cornZea mays subsp. mayse1
- Treatment
- no‐tillage treatmente0
- Outcome
- yielde0
- Direction
- lowere0
- Value
- 975 kg/hae0
- Comparator
- plowed treatmentse0
- Setting
- Mollic Ochraqualf soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The no‐tillage treatment averaged 975 kg/ha or 13% lower yield than the average of plowed treatments on the Mollic Ochraqualf soil for 10 years of continuous corn”
e1“corn yields”
Claim · model-written summary
No-tillage and plowing yielded equally in the other two rotations on Mollic Ochraqualf.
- Taxon
- cornZea mays subsp. mayse1
- Outcome
- yielde0
- Direction
- samee0
- Comparator
- plowed treatmentse0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“had the same yield as the plowed treatments for the other two rotations”
e1“corn yields”
Claim · model-written summary
No-tillage increased yield by 750 kg/ha or 10% versus plowing on Typic Fragiudalf under continuous corn or corn-soybeans.
- Taxon
- cornZea mays subsp. mayse1
- Treatment
- no‐tillage treatmente0
- Outcome
- yielde0
- Direction
- greatere0
- Value
- 750 kg/hae0
- Comparator
- plowed treatmentse0
- Setting
- Typic Fragiudalf soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The no‐tillage treatment averaged 750 kg/ha or 10% greater yield than the average of plowed treatments on the Typic Fragiudalf soil for 11 years of continuous corn or corn‐soybeans rotation”
e1“corn yields”
Claim · model-written summary
Other site-rotation combinations generally showed equal yield among tillage treatments.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- tillage treatmentse0
- Outcome
- corn yielde0
- Direction
- samee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Otherwise tillage treatments generally produced the same corn yield within site‐rotation combinations”
The same questions in other papers
tillage · yield · Zea mays (maize)Positive and negative results
811 papers in the same direction as this paper · 230 in the opposite direction · 57 reporting no difference from an alternative
- no effect
- no effect
- negative
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.