Abstract
Irrigation of peanut ( Arachis hypogaea L.) with a moving sprinkler irrigation system (MSIS) could affect runoff, evaporation, and crop yield. The objective was to determine the effects of irrigation management on soil water withdrawal, runoff, peanut yield and quality, and irrigation water use efficiency (WUE). Peanut was grown in a commercial field on a loess soil that is sensitive to seal formation and runoff. Irrigations were applied once every 3 or 7 d during the vegetative stage, and each of these treatments was subdivided into three irrigation‐frequency treatments of 3, 7, and 10 d during the flowering and pod‐filling stages. The total water applied in the various irrigation treatments, based on the soil moisture deficit up to field capacity, ranged from 575 to 648 mm. The lower the irrigation frequency, the smaller was the amount of water applied. During the vegetative stage, irrigation every 3 d led to faster coverage of the soil surface by the peanut canopy and reduced the amount of runoff by 60 mm compared with irrigation every 7 d. Pod yields in the various treatments ranged from 602 to 651 g m −2 , but the differences were statistically insignificant. Decreasing the irrigation frequencies during the vegetative and pod‐filling stages increased the WUE. Since peanut yield was insignificantly affected by the irrigation frequency, the enhanced WUE must have been due to reduced water losses during the irrigation season. The water saving through reduced runoff at the high irrigation frequencies may be canceled by higher losses through evaporation from the soil, interception by the canopy, and water removal by wind. One also has to consider the additional labor requirement and nonirrigating movements of the MSIS under high‐frequency irrigation management; these are factors that detract from the advantages of the MSIS.
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Claims 5
Claim · model-written summary
Irrigating peanut every 3 days during the vegetative stage reduced runoff by 60 mm compared with every 7 days.
- Taxon
- peanut
Arachis hypogaeae1 - Treatment
- irrigation every 3 de1
- Outcome
- amount of runoffe1
- Direction
- reducede1
- Value
- 60 mme1
- Comparator
- irrigation every 7 de1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“irrigation every 3 d led to faster coverage of the soil surface by the peanut canopy and reduced the amount of runoff by 60 mm compared with irrigation every 7 d”
e4“Peanut was grown in a commercial field on a loess soil”
Claim · model-written summary
Irrigation frequency had an insignificant effect on peanut pod yield, which ranged from 602 to 651 g m-2.
- Taxon
- peanutArachis hypogaeae2
- Treatment
- irrigation frequencye2
- Outcome
- peanut yielde2
- Direction
- insignificantly affectede2
- Value
- 602 to 651 g m −2e3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Since peanut yield was insignificantly affected by the irrigation frequency”
e3“Pod yields in the various treatments ranged from 602 to 651 g m −2”
Claim · model-written summary
Decreasing irrigation frequencies during the vegetative and pod-filling stages increased water use efficiency of peanut.
- Taxon
- peanutArachis hypogaeae4
- Treatment
- Decreasing the irrigation frequenciese5
- Outcome
- WUEe5
- Direction
- increasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Decreasing the irrigation frequencies during the vegetative and pod‐filling stages increased the WUE”
e4“Peanut was grown in a commercial field on a loess soil”
Claim · model-written summary
The enhanced water use efficiency of peanut is attributed to reduced water losses during the irrigation season.
- Taxon
- peanutArachis hypogaeae4
- Outcome
- WUEe6
- Qualifier
- reduced water losses during the irrigation seasone6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Peanut was grown in a commercial field on a loess soil”
e6“the enhanced WUE must have been due to reduced water losses during the irrigation season”
Claim · model-written summary
Total water applied across peanut irrigation treatments ranged from 575 to 648 mm.
- Taxon
- peanutArachis hypogaeae4
- Outcome
- total water appliede7
- Value
- 575 to 648 mme7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Peanut was grown in a commercial field on a loess soil”
e7“The total water applied in the various irrigation treatments, based on the soil moisture deficit up to field capacity, ranged from 575 to 648 mm”
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