Abstract
Production systems for dryland full season soybean consist of seedbed preparation, planting operations, weed control activities and harvesting operations. Often production system choices are interdependent across seedbed preparation, planting equipment and weed control options. For example, the selection of one system option such as no-till seedbed preparation restricts planting equipment choices. Evaluating production systems requires that a holistic approach be employed to account not only for agronomic factors but economic ones as well. Experiments were conducted in 1992, 1993, and 1994 at Keiser, AR and in 1992 and 1993 at Marianna, AR on clayey and silt loam soils, respectively. Treatments consisted of various combinations of preplant tillage (yes or no), row-spacing (narrow or wide), and post-plant cultivation (yes or no) for weed control. Grain yield data was collected and analyzed using SAS. In addition, economic analysis consisted of generating crop production budgets that were used to estimate returns to land, labor and management as well as to conduct breakeven and sensitivity analysis. A no-till system lead to higher grain yield and net returns on clayey soils at Keiser, AR, while the tilled system lead to more stable returns on silt loam soils at Marianna, AR. Results showed that narrow row spacing was superior regardless of soil type and location. Finally, post-plant cultivation was of little consequence given the above recommendations.
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Claims 5
Claim · model-written summary
No-till increased soybean grain yield on clayey soils at Keiser.
- Taxon
- soybean
Glycine maxt0 - Treatment
- no-till systeme0
- Outcome
- grain yielde0
- Direction
- highere0
- Qualifier
- clayey soilse0
- Setting
- Keiser, ARe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A no-till system lead to higher grain yield and net returns on clayey soils at Keiser, AR”
t0“soybean”
Claim · model-written summary
No-till increased net returns on clayey soils at Keiser.
- Taxon
- soybeanGlycine maxt0
- Treatment
- no-till systeme0
- Outcome
- net returnse0
- Direction
- highere0
- Qualifier
- clayey soilse0
- Setting
- Keiser, ARe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A no-till system lead to higher grain yield and net returns on clayey soils at Keiser, AR”
t0“soybean”
Claim · model-written summary
Tillage produced more stable returns on silt loam soils at Marianna.
- Taxon
- soybeanGlycine maxt0
- Treatment
- tilled systeme0
- Outcome
- returnse0
- Direction
- more stablee0
- Qualifier
- silt loam soilse0
- Setting
- Marianna, ARe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the tilled system lead to more stable returns on silt loam soils at Marianna, AR”
t0“soybean”
Claim · model-written summary
Narrow row spacing was superior across soil types and locations.
- Taxon
- soybeanGlycine maxt0
- Treatment
- narrow row spacinge0
- Outcome
- superiore0
- Direction
- superiore0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“narrow row spacing was superior regardless of soil type and location”
t0“soybean”
Claim · model-written summary
Post-plant cultivation had little consequence given the other system recommendations.
- Taxon
- soybeanGlycine maxt0
- Treatment
- post-plant cultivatione0
- Outcome
- little consequencee0
- Direction
- little consequencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“post-plant cultivation was of little consequence given the above recommendations”
t0“soybean”
The same questions in other papers
tillage · yield · Glycine max (soybean)Positive and negative results
263 papers in the same direction as this paper · 100 in the opposite direction · 26 reporting no difference from an alternative
- positive
- no effect
- no effect
386 papers more in this group
See all 390 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.