Abstract
We conducted research to determine if soybeans can be grown successfully in a no-till environment, in the semi-arid areas of the central Great Plains near North Platte, NE. Soybeans planted no-till into winter wheat stubble that was sprayed with glyphosate yielded more than when planted into soil that was rototilled in a winter wheat-soybean-fallow rotation. However, grain yield averaged only 420 kg ha -1 during 1975, 1976, and 1977. No-till soybean grown in a winter wheat-grain sorghum-soybean rotation during 1982 through 1985 yielded an average of 1370 kg ha -1 . Low yields were associated with lack of precipitation during the fallow period after winter wheat harvest or grain sorghum harvest and during the soybean pod elongation and filling period. Several herbicides gave excellent weed control in soybeans when applied either after wheat harvest, early preplant, or at planting time. None of the herbicides persisted long enough to reduce grain yields of winter wheat planted into the soybean residue. With present production costs these nonirrigated rotations are not economical in the semi-arid region of the central Great Plains of the United States.
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Claims 7
Claim · model-written summary
No-till soybeans in sprayed wheat stubble yielded more than soybeans in rototilled soil.
- Taxon
- Soybeans
Glycine maxe0 - Treatment
- no-till into winter wheat stubble that was sprayed with glyphosatee0
- Outcome
- yieldede0
- Direction
- moree0
- Comparator
- soil that was rototillede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybeans planted no-till into winter wheat stubble that was sprayed with glyphosate yielded more than when planted into soil that was rototilled in a winter wheat-soybean-fallow rotation.”
Claim · model-written summary
Grain yield in the 1975–1977 trial averaged 420 kg ha -1.
- Taxon
- SoybeanGlycine maxt0
- Outcome
- grain yielde0
- Value
- 420 kg ha -1e0
- Qualifier
- 1975, 1976, and 1977e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“grain yield averaged only 420 kg ha -1 during 1975, 1976, and 1977.”
t0“Soybean”
Claim · model-written summary
No-till soybean in a wheat–sorghum–soybean rotation yielded an average of 1370 kg ha -1 in 1982–1985.
- Taxon
- soybeanGlycine maxe0
- Treatment
- No-tille0
- Outcome
- yieldede0
- Value
- 1370 kg ha -1e0
- Qualifier
- 1982 through 1985e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No-till soybean grown in a winter wheat-grain sorghum-soybean rotation during 1982 through 1985 yielded an average of 1370 kg ha -1 .”
Claim · model-written summary
Low soybean yields were associated with insufficient precipitation during fallow and pod development.
- Taxon
- SoybeanGlycine maxt0
- Organ / stage
- soybean pod elongation and filling periode0
- Outcome
- Low yieldse0
- Direction
- Lowe0
- Qualifier
- lack of precipitation during the fallow period after winter wheat harvest or grain sorghum harvest and during the soybean pod elongation and filling periode0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Low yields were associated with lack of precipitation during the fallow period after winter wheat harvest or grain sorghum harvest and during the soybean pod elongation and filling period.”
t0“Soybean”
Claim · model-written summary
Several herbicides controlled weeds excellently in soybeans across three application timings.
- Taxon
- soybeansGlycine maxe0
- Treatment
- Several herbicidese0
- Outcome
- weed controle0
- Direction
- excellente0
- Qualifier
- after wheat harvest, early preplant, or at planting timee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Several herbicides gave excellent weed control in soybeans when applied either after wheat harvest, early preplant, or at planting time.”
Claim · model-written summary
The soybean herbicides did not persist long enough to reduce subsequent winter wheat grain yields.
- Taxon
- winter wheat
Triticum aestivume0 - Treatment
- herbicidese0
- Outcome
- grain yieldse0
- Direction
- reducee0
- Qualifier
- None of the herbicides persisted long enoughe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“None of the herbicides persisted long enough to reduce grain yields of winter wheat planted into the soybean residue.”
Claim · model-written summary
The authors judged current nonirrigated rotations uneconomical in the semiarid central Great Plains.
- Taxon
- SoybeanGlycine maxt0
- Outcome
- not economicale0
- Qualifier
- With present production costse0
- Setting
- semi-arid region of the central Great Plains of the United Statese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With present production costs these nonirrigated rotations are not economical in the semi-arid region of the central Great Plains of the United States.”
t0“Soybean”
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