Abstract
Water deficit is a primary yield limiting factor in soybean [ Glycine max (L.) Merr.]. A new concept in Midwestern irrigation is the use of the same drain lines for both subirrigation and drainage to provide a total water management system and water table control. The objectives of this research were to evaluate the potential of a subirrigation/drainage system, when used in combination with a soybean production system with known high yield potential, to increase average yields on a poorly drained soil in the humid Midwest and to identify an optimum water table level for soybean in this environment. A subirrigation/drainage research facility with drain lines spaced 20 ft apart was established at Wooster, OH, in the fall of 1984 on a Ravenna silt loam (fine‐loamy, mixed, mesic Aerie Fragiaqualfs). Three different water table levels (16‐, 22‐, and 28‐in. average depth) were compared over 4 yr (1985 through 1988) using four soybean cultivars (‘Sprite 87’, ‘Hobbit 87’, ‘Asgrow 3127’, and ‘Williams 82’). A nonirrigated treatment was added in 1987 and 1988. All plots were planted in 7‐in.‐wide rows in late April or early May. Averaged over the four cultivars and 4 yr the highest yield was obtained with the highest water table (80.6, 73.0, and 67.9 bu/acre for the 16‐, 22‐, and 28‐in. water table levels, respectively). Averaged over 2 yr, 1987 and 1988, there was a 43% yield advantage (80.2 vs. 56.0 bu/acre) for the 16‐in. water table level over the nonirrigated treatment.
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Claims 4
Claim · model-written summary
The highest water table gave the highest soybean yield, 80.6 bu/acre averaged over four cultivars and four years.
- Taxon
- Glycine max
Glycine maxe0 - Treatment
- the highest water tablee1
- Outcome
- yielde1
- Direction
- higheste1
- Value
- 80.6e1
- Comparator
- 22-, and 28-in. water table levelse1
- Setting
- Wooster, OHe4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water deficit is a primary yield limiting factor in soybean [ Glycine max (L.) Merr.]”
e4“A subirrigation/drainage research facility with drain lines spaced 20 ft apart was established at Wooster, OH, in the fall of 1984 on a Ravenna silt loam”
e1“Averaged over the four cultivars and 4 yr the highest yield was obtained with the highest water table (80.6, 73.0, and 67.9 bu/acre for the 16-, 22-, and 28-in. water table levels, respectively)”
Claim · model-written summary
The 22-in. water table level gave 73.0 bu/acre soybean yield averaged over four cultivars and four years.
- Taxon
- Glycine maxGlycine maxe0
- Treatment
- 16-, 22-, and 28-in. water table levelse1
- Outcome
- yielde1
- Value
- 73.0e1
- Setting
- Wooster, OHe4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water deficit is a primary yield limiting factor in soybean [ Glycine max (L.) Merr.]”
e4“A subirrigation/drainage research facility with drain lines spaced 20 ft apart was established at Wooster, OH, in the fall of 1984 on a Ravenna silt loam”
e1“Averaged over the four cultivars and 4 yr the highest yield was obtained with the highest water table (80.6, 73.0, and 67.9 bu/acre for the 16-, 22-, and 28-in. water table levels, respectively)”
Claim · model-written summary
The 28-in. water table level gave 67.9 bu/acre soybean yield averaged over four cultivars and four years.
- Taxon
- Glycine maxGlycine maxe0
- Treatment
- 16-, 22-, and 28-in. water table levelse1
- Outcome
- yielde1
- Value
- 67.9e1
- Setting
- Wooster, OHe4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water deficit is a primary yield limiting factor in soybean [ Glycine max (L.) Merr.]”
e4“A subirrigation/drainage research facility with drain lines spaced 20 ft apart was established at Wooster, OH, in the fall of 1984 on a Ravenna silt loam”
e1“Averaged over the four cultivars and 4 yr the highest yield was obtained with the highest water table (80.6, 73.0, and 67.9 bu/acre for the 16-, 22-, and 28-in. water table levels, respectively)”
Claim · model-written summary
The 16-in. water table level gave a 43% soybean yield advantage over the nonirrigated treatment in 1987 and 1988.
- Taxon
- Glycine maxGlycine maxe0
- Treatment
- water table levele3
- Outcome
- yield advantagee2
- Direction
- advantagee2
- Value
- 43%e2
- Qualifier
- 80.2 vs. 56.0 bu/acree2
- Comparator
- nonirrigated treatmente3
- Setting
- Wooster, OHe4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water deficit is a primary yield limiting factor in soybean [ Glycine max (L.) Merr.]”
e4“A subirrigation/drainage research facility with drain lines spaced 20 ft apart was established at Wooster, OH, in the fall of 1984 on a Ravenna silt loam”
e2“Averaged over 2 yr, 1987 and 1988, there was a 43% yield advantage (80.2 vs. 56.0 bu/acre)”
e3“water table level over the nonirrigated treatment”
The same questions in other papers
soil water · yield · Glycine max (soybean)Results differ
14 papers in the same direction as this paper · 23 in the opposite direction
- positive
- no effect
- negative
34 papers more in this group
See all 38 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.