Abstract
ABSTRACT CORN {Zea mays L.) and soybean [Glycine max (L.) Merr.] were grown on an 18-ha site of Coastal Plain soils under nonirrigated and irrigated conditions for the three-year period, 1979-81. The five tillage treatments were double disking and minimum tillage, both with and without in-row subsoiling at planting; and disking with uniform chisel plowing. Rainfall during the growing season was near normal in 1979, below normal in 1981, and much below normal in 1980. There were significant yield differences due to tillage and irrigation for both corn and soybean. Corn yield increases due to deep tillage were greater in magnitude and were more consistent than those for soybean. Minimum tillage without subsoiling produced the lowest yields for both corn and soybean; however, this treatment had the poorest stand and the most severe weed competition of all treatments. Deep tillage and irrigation produced additive yield increases for corn, but not for soybean, indicating the possible need to use both management practices for corn in some soil conditions. Irrigation increased yields for both corn and soybean across all tillage treatments with mean yield increases of 3.37 t/ha (86%) and 0.73 t/ha (51%) for corn and soybean, respectively. The choice of management practices will depend upon their cost relative to their respective yield increase potential.
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Claims 10
Claim · model-written summary
Tillage and irrigation significantly affected corn yield.
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- tillage and irrigatione0
- Outcome
- yield differencese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were significant yield differences due to tillage and irrigation for both corn and soybean.”
Claim · model-written summary
Tillage and irrigation significantly affected soybean yield.
- Taxon
- soybean
Glycine maxe0 - Treatment
- tillage and irrigatione0
- Outcome
- yield differencese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were significant yield differences due to tillage and irrigation for both corn and soybean.”
Claim · model-written summary
Corn yield increases from deep tillage were greater and more consistent than soybean increases.
- Taxon
- CornZea mays subsp. mayse0
- Treatment
- deep tillagee0
- Outcome
- yield increasese0
- Direction
- greatere0
- Comparator
- soybeane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Corn yield increases due to deep tillage were greater in magnitude and were more consistent than those for soybean.”
Claim · model-written summary
Minimum tillage without subsoiling gave the lowest corn yield.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- Minimum tillage without subsoilinge0
- Outcome
- yieldse0
- Direction
- loweste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Minimum tillage without subsoiling produced the lowest yields for both corn and soybean”
Claim · model-written summary
Minimum tillage without subsoiling gave the lowest soybean yield.
- Taxon
- soybeanGlycine maxe0
- Treatment
- Minimum tillage without subsoilinge0
- Outcome
- yieldse0
- Direction
- loweste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Minimum tillage without subsoiling produced the lowest yields for both corn and soybean”
Claim · model-written summary
The minimum tillage without subsoiling treatment had the poorest stand and most severe weed competition.
Not reportedTaxon
Verbatim
e0“this treatment had the poorest stand and the most severe weed competition of all treatments”
t0“Crop Yield”
Claim · model-written summary
Deep tillage and irrigation gave additive corn yield increases.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- Deep tillage and irrigatione0
- Outcome
- yield increasese0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Deep tillage and irrigation produced additive yield increases for corn, but not for soybean”
Claim · model-written summary
Deep tillage and irrigation did not give additive soybean yield increases.
- Taxon
- soybeanGlycine maxe0
- Treatment
- Deep tillage and irrigatione0
- Outcome
- additive yield increasese0
- Direction
- note0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Deep tillage and irrigation produced additive yield increases for corn, but not for soybean”
Claim · model-written summary
Irrigation raised mean corn yield by 3.37 t/ha (86%) across tillage treatments.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- Irrigatione0
- Outcome
- yieldse0
- Direction
- increasede0
- Value
- 3.37 t/ha (86%)e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Irrigation increased yields for both corn and soybean across all tillage treatments with mean yield increases of 3.37 t/ha (86%) and 0.73 t/ha (51%) for corn and soybean, respectively.”
Claim · model-written summary
Irrigation raised mean soybean yield by 0.73 t/ha (51%) across tillage treatments.
- Taxon
- soybeanGlycine maxe0
- Treatment
- Irrigatione0
- Outcome
- yieldse0
- Direction
- increasede0
- Value
- 0.73 t/ha (51%)e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Irrigation increased yields for both corn and soybean across all tillage treatments with mean yield increases of 3.37 t/ha (86%) and 0.73 t/ha (51%) for corn and soybean, respectively.”
The same questions in other papers
irrigation · yield · Glycine max (soybean)Positive and negative results
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- negative
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811 papers in the same direction as this paper · 230 in the opposite direction · 57 reporting no difference from an alternative
- no effect
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See all 1,099 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.