Abstract
Abstract Precipitation is limited in the Southern Great Plains, and farmers must minimize production costs and control erosion. The purpose of this research was to determine economic feasibility of dryland no‐ and reduced‐tillage systems compared with sweep plowing on Pullman clay loam soil (fine, mixed, mesic Torrertic Paleustoll) in continuous winter wheat ( Triticum aestivum L. emend. Thell) and in a winter wheat‐sorghum [ Sorghum bicolor (L.) Moench]‐fallow rotation with two crops produced in 3 yr. Economic analyses considered 4‐yr averages of income and treatment costs. In continuous winter wheat, sweep plowing yielded significantly less (425 kg ha −1 ) than the best no‐tillage treatment in 2 of 4 yr. Because of low variable costs, sweeping was most profitable in the short‐term, and when machinery depreciation was considered for the long‐term, sweep tillage followed by glyphosate lost the least money. In the fallow period between sorghum and wheat, sweep plowing yielded significantly less than the best no‐tillage 2 of 4 yr or an average of 275 kg ha −1 . However, because of low variable costs, sweep plowing was the most profitable in the short run, $84 ha −1 , but $3 ha −1 less profitable in the long run than sweep plowing followed by glyphosate. In the wheat‐sorghum part of the rotation, using paraquat or glyphosate alone resulted in lowest yields because of poor weed control. Sweep plowing yielded less than the best no‐tillage 1 of 4 yr, but lower costs made it the most profitable, both short and long term.
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Claims 9
Claim · model-written summary
In continuous winter wheat, sweep plowing yielded significantly less (425 kg ha -1) than the best no-tillage treatment in 2 of 4 years.
- Taxon
- winter wheat
Triticum aestivume0 - Treatment
- sweep plowinge0
- Outcome
- yielde0
- Direction
- lesse0
- Value
- 425 kg ha −1e0
- Qualifier
- 2 of 4 yre0
- Comparator
- the best no‐tillage treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In continuous winter wheat, sweep plowing yielded significantly less (425 kg ha −1 ) than the best no‐tillage treatment in 2 of 4 yr”
Claim · model-written summary
In the fallow period between sorghum and wheat, sweep plowing yielded significantly less than the best no-tillage in 2 of 4 years, an average of 275 kg ha -1.
- Taxon
- wheatTriticum aestivume1
- Treatment
- sweep plowinge1
- Outcome
- yielde1
- Direction
- lesse1
- Value
- 275 kg ha −1e1
- Qualifier
- 2 of 4 yre1
- Comparator
- the best no‐tillagee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In the fallow period between sorghum and wheat, sweep plowing yielded significantly less than the best no‐tillage 2 of 4 yr or an average of 275 kg ha −1”
Claim · model-written summary
In continuous winter wheat, sweeping was the most profitable option in the short term because of low variable costs.
- Taxon
- winter wheatTriticum aestivume0
- Treatment
- sweepinge2
- Outcome
- most profitable in the short-terme2
- Direction
- most profitablee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In continuous winter wheat, sweep plowing yielded significantly less (425 kg ha −1 ) than the best no‐tillage treatment in 2 of 4 yr”
e2“Because of low variable costs, sweeping was most profitable in the short-term, and when machinery depreciation was considered for the long‐term, sweep tillage followed by glyphosate lost the least money”
Claim · model-written summary
In continuous winter wheat, sweep tillage followed by glyphosate lost the least money when machinery depreciation was considered.
- Taxon
- winter wheatTriticum aestivume0
- Treatment
- sweep tillage followed by glyphosatee2
- Outcome
- lost the least moneye2
- Direction
- leaste2
- Qualifier
- when machinery depreciation was considerede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In continuous winter wheat, sweep plowing yielded significantly less (425 kg ha −1 ) than the best no‐tillage treatment in 2 of 4 yr”
e2“Because of low variable costs, sweeping was most profitable in the short-term, and when machinery depreciation was considered for the long‐term, sweep tillage followed by glyphosate lost the least money”
Claim · model-written summary
In the fallow period, sweep plowing was the most profitable option in the short run at $84 per ha.
- Taxon
- wheatTriticum aestivume1
- Treatment
- sweep plowinge5
- Outcome
- most profitable in the short rune5
- Direction
- most profitablee5
- Value
- $84 ha −1e5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In the fallow period between sorghum and wheat, sweep plowing yielded significantly less than the best no‐tillage 2 of 4 yr or an average of 275 kg ha −1”
e5“sweep plowing was the most profitable in the short run, $84 ha −1 , but $3 ha −1 less profitable in the long run than sweep plowing followed by glyphosate”
Claim · model-written summary
In the long run, sweep plowing was $3 ha -1 less profitable than sweep plowing followed by glyphosate.
- Taxon
- wheatTriticum aestivume1
- Treatment
- sweep plowinge5
- Outcome
- less profitable in the long rune5
- Direction
- less profitablee5
- Value
- $3 ha −1e5
- Comparator
- sweep plowing followed by glyphosatee5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In the fallow period between sorghum and wheat, sweep plowing yielded significantly less than the best no‐tillage 2 of 4 yr or an average of 275 kg ha −1”
e5“sweep plowing was the most profitable in the short run, $84 ha −1 , but $3 ha −1 less profitable in the long run than sweep plowing followed by glyphosate”
Claim · model-written summary
In the wheat-sorghum part of the rotation, paraquat or glyphosate alone gave the lowest yields because of poor weed control.
- Taxon
- wheatTriticum aestivume3
- Treatment
- paraquat or glyphosate alonee3
- Outcome
- yieldse3
- Direction
- loweste3
- Qualifier
- because of poor weed controle3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“In the wheat‐sorghum part of the rotation, using paraquat or glyphosate alone resulted in lowest yields because of poor weed control”
Claim · model-written summary
In the wheat-sorghum part, sweep plowing yielded less than the best no-tillage in 1 of 4 years.
- Taxon
- wheatTriticum aestivume3
- Treatment
- Sweep plowinge4
- Outcome
- yielde4
- Direction
- lesse4
- Qualifier
- 1 of 4 yre4
- Comparator
- the best no‐tillagee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“In the wheat‐sorghum part of the rotation, using paraquat or glyphosate alone resulted in lowest yields because of poor weed control”
e4“Sweep plowing yielded less than the best no‐tillage 1 of 4 yr, but lower costs made it the most profitable, both short and long term”
Claim · model-written summary
In the wheat-sorghum part, sweep plowing was the most profitable option in both the short and long term because of lower costs.
- Taxon
- wheatTriticum aestivume3
- Treatment
- Sweep plowinge4
- Outcome
- most profitable, both short and long terme4
- Direction
- most profitablee4
- Qualifier
- lower costse4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“In the wheat‐sorghum part of the rotation, using paraquat or glyphosate alone resulted in lowest yields because of poor weed control”
e4“Sweep plowing yielded less than the best no‐tillage 1 of 4 yr, but lower costs made it the most profitable, both short and long term”
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