Abstract
Our aim was to investigate the potential effects of irrigation frequency during the growing season of winter wheat on the water use efficiency (WUE) of summer maize in a double cropping system. To this end, we conducted a field experiment with winter wheat cultivated with 1, 2, and 3 irrigation applications with 120 mm water at the time of stem elongation, heading, or milking. The results showed that later irrigation applications increased soil moisture before sowing (SMBS) of summer maize. Summer maize grain yield was enhanced in both the common and excessively rainy years with increased SMBS; however, irrigation during the later growing season of winter wheat in rainy years could increase deep percolation of summer maize. In common and rainy years, the more the SMBS, the higher was the grain yield of summer maize. The highest WUE for summer maize was obtained when it was grown after winter wheat irrigated with 120 mm water at milking or 60 mm water at each, the stem elongation and heading stages. Considering the combined WUE of winter wheat and summer maize, the authors think that winter wheat should be irrigated at the stem elongation and heading stages to achieve reasonable WUE and grain yield for both crops.
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Claims 6
Claim · model-written summary
Later winter wheat irrigation increased soil moisture before sowing summer maize.
- Treatment
- later irrigation applicationse0
- Outcome
- soil moisture before sowing (SMBS) of summer maizee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results showed that later irrigation applications increased soil moisture before sowing (SMBS) of summer maize.”
Claim · model-written summary
Summer maize grain yield increased with higher soil moisture before sowing in common and excessively rainy years.
- Outcome
- grain yielde0
- Direction
- enhancede0
- Qualifier
- in both the common and excessively rainy years with increased SMBSe0
- Setting
- common and excessively rainy yearse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Summer maize grain yield was enhanced in both the common and excessively rainy years with increased SMBS; however, irrigation during the later growing season of winter wheat in rainy years could increase deep percolation of summer maize.”
Claim · model-written summary
Later winter wheat irrigation in rainy years could increase deep percolation of summer maize.
- Treatment
- irrigation during the later growing season of winter wheate0
- Outcome
- deep percolation of summer maizee0
- Direction
- increasee0
- Qualifier
- in rainy yearse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Summer maize grain yield was enhanced in both the common and excessively rainy years with increased SMBS; however, irrigation during the later growing season of winter wheat in rainy years could increase deep percolation of summer maize.”
Claim · model-written summary
Summer maize WUE was highest after winter wheat irrigated with 120 mm water at milking.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest WUE for summer maize was obtained when it was grown after winter wheat irrigated with 120 mm water at milking or 60 mm water at each, the stem elongation and heading stages.”
Claim · model-written summary
Summer maize WUE was highest after winter wheat irrigated with 60 mm water at each, the stem elongation and heading stages.
- Treatment
- 60 mm water at each, the stem elongation and heading stagese0
- Outcome
- WUE for summer maizee0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest WUE for summer maize was obtained when it was grown after winter wheat irrigated with 120 mm water at milking or 60 mm water at each, the stem elongation and heading stages.”
Claim · model-written summary
The authors recommend winter wheat irrigation at stem elongation and heading for combined WUE and grain yield.
- Taxon
- winter wheat and summer maize
Triticum aestivum
Zea mayse0 - Outcome
- winter wheat should be irrigated at the stem elongation and heading stagese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Considering the combined WUE of winter wheat and summer maize, the authors think that winter wheat should be irrigated at the stem elongation and heading stages to achieve reasonable WUE and grain yield for both crops.”
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