Abstract
Although the Southeast U.S. receives an average annual precipitation of 1300 mm, crop yields are often limited by erratic seasonal rainfall distributions. Studies were conducted from 2001 through 2017 at the USDA/ARS Multi-crop Irrigation Research Farm in Shellman, GA (84.60 deg W, 30.7333 deg N) on a Greenville fine sandy loam (fine, kaolinitic, thermic Rhodic Kandiudults). The objective of this long-term study is to evaluate the effects of irrigation and crop rotation sequencing consisting of peanut, corn, and cotton on yield and net economic returns to both variable and total costs. Analysis included the entire study period and was also separated for years with below and above average rainfall. When averaged across all years, irrigation increased peanut, corn, and cotton yield and net returns compared with non-irrigation. Six different rotation sequences were addressed inclusive of continuous peanut, one year out of peanut with corn or cotton, and two years out of peanut with combinations of corn and cotton. In both irrigated and non-irrigated peanuts, the least and greatest yields were from continuous peanut and the two year out rotations, respectively. No peanut yield difference resulted with corn or cotton rotation partners for the rotation sequence. Length of rotation between peanut years did influence peanut yield and net returns. Profitability and optimal rotation sequence within any cropping system depended on irrigation, yield, crop price, and production costs for peanut, corn, and cotton.
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Claims 8
Claim · model-written summary
Irrigation increased peanut yield and net returns relative to non-irrigation.
- Taxon
- peanut
Arachis hypogaeae0 - Treatment
- irrigatione0
- Outcome
- yield and net returnse0
- Direction
- increasede0
- Comparator
- non-irrigatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“irrigation increased peanut, corn, and cotton yield and net returns compared with non-irrigation”
Claim · model-written summary
Irrigation increased corn yield and net returns relative to non-irrigation.
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- irrigatione0
- Outcome
- yield and net returnse0
- Direction
- increasede0
- Comparator
- non-irrigatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“irrigation increased peanut, corn, and cotton yield and net returns compared with non-irrigation”
Claim · model-written summary
Irrigation increased cotton yield and net returns relative to non-irrigation.
- Taxon
- cotton
Gossypium hirsutume0 - Treatment
- irrigatione0
- Outcome
- yield and net returnse0
- Direction
- increasede0
- Comparator
- non-irrigatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“irrigation increased peanut, corn, and cotton yield and net returns compared with non-irrigation”
Claim · model-written summary
Continuous peanut had the least peanut yield in both irrigation conditions.
- Taxon
- peanutsArachis hypogaeae0
- Treatment
- continuous peanute0
- Outcome
- yieldse0
- Direction
- leaste0
- Comparator
- two year out rotationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In both irrigated and non-irrigated peanuts, the least and greatest yields were from continuous peanut and the two year out rotations, respectively”
Claim · model-written summary
Two year out rotations had the greatest peanut yield in both irrigation conditions.
- Taxon
- peanutsArachis hypogaeae0
- Treatment
- two year out rotationse0
- Outcome
- yieldse0
- Direction
- greateste0
- Comparator
- continuous peanute0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In both irrigated and non-irrigated peanuts, the least and greatest yields were from continuous peanut and the two year out rotations, respectively”
Claim · model-written summary
Peanut yield did not differ between corn and cotton rotation partners.
- Taxon
- peanutArachis hypogaeae0
- Treatment
- corne0
- Outcome
- peanut yielde0
- Direction
- No peanut yield differencee0
- Comparator
- cottone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No peanut yield difference resulted with corn or cotton rotation partners for the rotation sequence”
Claim · model-written summary
Rotation length between peanut years influenced peanut yield and net returns.
- Taxon
- peanutArachis hypogaeae0
- Treatment
- Length of rotation between peanut yearse0
- Outcome
- peanut yield and net returnse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Length of rotation between peanut years did influence peanut yield and net returns”
Claim · model-written summary
Profitability and optimal rotation depended on irrigation, yield, crop price and production costs.
- Taxon
- peanut, corn, and cottonGossypium hirsutumArachis hypogaeaZea mays subsp. mayse0
- Treatment
- irrigatione0
- Outcome
- Profitability and optimal rotation sequencee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Profitability and optimal rotation sequence within any cropping system depended on irrigation, yield, crop price, and production costs for peanut, corn, and cotton”
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