Abstract
The ESPS (Early Soybean Production System) is being adopted in the midsouthern USA to avoid some of the effects of normal late‐season drought. Field studies with soybean [ Glycine max (L.) Merr.] grown following rice ( Oryza sativa L.) were conducted in 1994, 1995, and 1996 at Stoneville, MS, on Sharkey clay (very‐fine, smectitic, thermic Chromic Epiaquert) to compare yield of Maturity Group (MG) IV and V cultivars grown under furrow vs. flood irrigation, and yield and economic performance of nonirrigated (NI) and furrow‐ and flood‐irrigated MG IV and V cultivars. Three‐year average yields from irrigated MG IV and V cultivars were significantly greater than average NI yield. Within each year, yields from MG V cultivars equaled or exceeded those from MG IV cultivars in all environments. Furrow‐irrigated MG IV cultivars yielded significantly more than NI cultivars in all 3 yr, while flood‐irrigated MG IV cultivars yielded more than NI cultivars in 2 of the 3 yr. Both furrow‐ and flood‐irrigated MG V cultivars yielded significantly more than NI cultivars in 2 of the 3 yr. Three‐year average net returns from furrow‐ and flood‐irrigated environments were similar, and both were greater than those from the NI. Within each year, average net return from MG V cultivars in all environments was equal to or greater than that from MG IV cultivars. These results indicate that the ESPS can be used to effectively grow soybean in a rice–soybean rotation on clay soil, and that irrigation will usually result in greater profit from soybean.
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Claims 10
Claim · model-written summary
Irrigated MG IV and V cultivars had greater three-year mean yield than nonirrigated plants.
- Taxon
- soybean
Glycine maxt0 - Material
- MG IV and V cultivarse0
- Treatment
- irrigatede0
- Outcome
- Three‐year average yieldse0
- Direction
- greatere0
- Comparator
- NIe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Three‐year average yields from irrigated MG IV and V cultivars were significantly greater than average NI yield”
t0“Soybean”
Claim · model-written summary
MG V cultivars matched or exceeded MG IV yield each year across environments.
- Taxon
- soybeanGlycine maxt0
- Material
- MG V cultivarse0
- Outcome
- yieldse0
- Direction
- equaled or exceedede0
- Comparator
- MG IV cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Within each year, yields from MG V cultivars equaled or exceeded those from MG IV cultivars in all environments”
t0“Soybean”
Claim · model-written summary
Furrow‐irrigated MG IV cultivars yielded more than nonirrigated cultivars.
- Taxon
- soybeanGlycine maxt0
- Material
- MG IV cultivarse0
- Treatment
- Furrow‐irrigatede0
- Outcome
- yieldede0
- Direction
- moree0
- Comparator
- NI cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Furrow‐irrigated MG IV cultivars yielded significantly more than NI cultivars in all 3 yr”
t0“Soybean”
Claim · model-written summary
flood‐irrigated MG IV cultivars yielded more than nonirrigated cultivars.
- Taxon
- soybeanGlycine maxt0
- Material
- MG IV cultivarse0
- Treatment
- flood‐irrigatede0
- Outcome
- yieldede0
- Direction
- moree0
- Comparator
- NI cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“flood‐irrigated MG IV cultivars yielded more than NI cultivars in 2 of the 3 yr”
t0“Soybean”
Claim · model-written summary
furrow‐ and flood‐irrigated MG V cultivars yielded more than nonirrigated cultivars.
- Taxon
- soybeanGlycine maxt0
- Material
- MG V cultivarse0
- Treatment
- furrow‐ and flood‐irrigatede0
- Outcome
- yieldede0
- Direction
- moree0
- Comparator
- NI cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both furrow‐ and flood‐irrigated MG V cultivars yielded significantly more than NI cultivars in 2 of the 3 yr”
t0“Soybean”
Claim · model-written summary
Furrow and flood irrigation had similar three-year net returns.
- Taxon
- soybeanGlycine maxt0
- Treatment
- furrow‐e0
- Outcome
- Three‐year average net returnse0
- Direction
- similare0
- Comparator
- flood‐irrigated environmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Three‐year average net returns from furrow‐ and flood‐irrigated environments were similar, and both were greater than those from the NI”
t0“Soybean”
Claim · model-written summary
Furrow and flood irrigation returned more than no irrigation.
- Taxon
- soybeanGlycine maxt0
- Treatment
- furrow‐ and flood‐irrigated environmentse0
- Outcome
- Three‐year average net returnse0
- Direction
- greatere0
- Comparator
- NIe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Three‐year average net returns from furrow‐ and flood‐irrigated environments were similar, and both were greater than those from the NI”
t0“Soybean”
Claim · model-written summary
MG V net returns were equal to or greater than MG IV each year.
- Taxon
- soybeanGlycine maxt0
- Material
- MG V cultivarse0
- Outcome
- average net returne0
- Direction
- equal to or greater thane0
- Comparator
- MG IV cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Within each year, average net return from MG V cultivars in all environments was equal to or greater than that from MG IV cultivars”
t0“Soybean”
Claim · model-written summary
Early soybean production can work in rice–soybean rotation on clay soil.
- Taxon
- soybeanGlycine maxe0
- Outcome
- effectively grow soybean in a rice–soybean rotation on clay soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the ESPS can be used to effectively grow soybean in a rice–soybean rotation on clay soil”
Claim · model-written summary
Irrigation will usually increase soybean profit.
- Taxon
- soybeanGlycine maxe0
- Treatment
- irrigatione0
- Outcome
- greater profit from soybeane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“irrigation will usually result in greater profit from soybean”
The same questions in other papers
flooding · yield · Glycine max (soybean)Results differ
3 papers in the same direction as this paper · 37 in the opposite direction · 1 reporting no difference from an alternative
- negative
- negative
- negative
38 papers more in this group
See all 42 papers →irrigation · yield · Glycine max (soybean)Positive and negative results
263 papers in the same direction as this paper · 72 in the opposite direction · 7 reporting no difference from an alternative
- positive
- positive
- positive
339 papers more in this group
See all 343 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.