Abstract
Water scarcity and severe environmental degradation are causing water managers in Central Asia to reevaluate irrigation water use. In this area, the goal of any intervention must include water conservation without reducing crop productivity. The objective of this study was to evaluate the impact of two irrigation technologies, regulated deficit irrigation and alternate furrow irrigation, on components of the plant-soil water system for common bean and green gram. The use of both deficit irrigation and alternate furrow irrigation resulted in water savings and reduced crop evaporative consumption. The reduction was greater in green gram than common bean when both technologies were used. The pattern of water extraction from the soil profile, when under stress, was different between the crops. Severely stressed common bean extracted more water at 60 cm than non-stressed plants, whereas severely stressed green gram used less water at all depths. Transpiration rates were generally lower in green gram than common bean and decreased in both crops as soil water deficit increased. However, when the soil water was returned to field capacity by irrigation, common bean's water use was higher than the non-stressed condition while green gram's transpiration rate only increased slightly from the before-irrigation value. Collectively, these results indicate distinct crop-dependent responses to soil drying. Use of the FAO water stress coefficient in predicting evapotranspiration under water-limiting conditions appears to overpredict water use for green gram and could lead to over-irrigation; considerable water savings are available for this crop.
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Claims 14
Claim · model-written summary
Deficit irrigation saved water and reduced crop evaporative consumption in common bean.
- Taxon
- common bean
Phaseolus vulgarise1 - Treatment
- deficit irrigatione0
- Outcome
- crop evaporative consumptione0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The use of both deficit irrigation and alternate furrow irrigation resulted in water savings and reduced crop evaporative consumption”
e1“common bean and green gram”
Claim · model-written summary
Alternate furrow irrigation saved water and reduced crop evaporative consumption in common bean.
- Taxon
- common beanPhaseolus vulgarise1
- Treatment
- alternate furrow irrigatione0
- Outcome
- crop evaporative consumptione0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The use of both deficit irrigation and alternate furrow irrigation resulted in water savings and reduced crop evaporative consumption”
e1“common bean and green gram”
Claim · model-written summary
Deficit irrigation saved water and reduced crop evaporative consumption in green gram.
- Taxon
- green gram
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Vigna radiata var. radiatae1 - Treatment
- deficit irrigatione0
- Outcome
- crop evaporative consumptione0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“The use of both deficit irrigation and alternate furrow irrigation resulted in water savings and reduced crop evaporative consumption”
e1“common bean and green gram”
Claim · model-written summary
Alternate furrow irrigation saved water and reduced crop evaporative consumption in green gram.
- Taxon
- green gramVigna radiata var. radiatae1
- Treatment
- alternate furrow irrigatione0
- Outcome
- crop evaporative consumptione0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The use of both deficit irrigation and alternate furrow irrigation resulted in water savings and reduced crop evaporative consumption”
e1“common bean and green gram”
Claim · model-written summary
The reduction under both irrigation technologies was greater for green gram than common bean.
- Taxon
- green gramVigna radiata var. radiatae0
- Outcome
- reductione0
- Direction
- greatere0
- Comparator
- common beane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The reduction was greater in green gram than common bean when both technologies were used”
Claim · model-written summary
Severely stressed common bean extracted more water at 60 cm than non-stressed plants.
- Taxon
- common beanPhaseolus vulgarise0
- Treatment
- Severely stressede0
- Outcome
- watere0
- Direction
- moree0
- Qualifier
- 60 cme0
- Comparator
- non-stressed plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Severely stressed common bean extracted more water at 60 cm than non-stressed plants”
Claim · model-written summary
Severely stressed green gram used less water at all depths.
- Taxon
- green gramVigna radiata var. radiatae0
- Treatment
- severely stressede0
- Outcome
- watere0
- Direction
- lesse0
- Qualifier
- at all depthse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“severely stressed green gram used less water at all depths”
Claim · model-written summary
Green gram transpiration was generally lower than common bean transpiration.
- Taxon
- green gramVigna radiata var. radiatae0
- Outcome
- Transpiration ratese0
- Direction
- lowere0
- Comparator
- common beane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Transpiration rates were generally lower in green gram than common bean”
Claim · model-written summary
Common bean transpiration decreased as soil water deficit increased.
- Taxon
- common beanPhaseolus vulgarise0
- Treatment
- soil water deficite0
- Outcome
- Transpiration ratese0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Transpiration rates were generally lower in green gram than common bean and decreased in both crops as soil water deficit increased”
Claim · model-written summary
Green gram transpiration decreased as soil water deficit increased.
- Taxon
- green gramVigna radiata var. radiatae0
- Treatment
- soil water deficite0
- Outcome
- Transpiration ratese0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Transpiration rates were generally lower in green gram than common bean and decreased in both crops as soil water deficit increased”
Claim · model-written summary
After irrigation restored field capacity, common bean water use exceeded the non-stressed condition.
- Taxon
- common beanPhaseolus vulgarise0
- Treatment
- returned to field capacity by irrigatione0
- Outcome
- water usee0
- Direction
- highere0
- Comparator
- non-stressed conditione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when the soil water was returned to field capacity by irrigation, common bean's water use was higher than the non-stressed condition”
Claim · model-written summary
After irrigation restored field capacity, green gram transpiration rose only slightly from before irrigation.
- Taxon
- green gramVigna radiata var. radiatae0
- Treatment
- returned to field capacity by irrigatione1
- Outcome
- transpiration ratee0
- Direction
- increasede0
- Qualifier
- only increased slightlye0
- Comparator
- before-irrigation valuee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“green gram's transpiration rate only increased slightly from the before-irrigation value”
e1“soil water was returned to field capacity by irrigation”
Claim · model-written summary
The FAO water stress coefficient appeared to overpredict green gram evapotranspiration under water limitation.
- Taxon
- green gramVigna radiata var. radiatae0
- Outcome
- water usee0
- Direction
- overpredicte0
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Use of the FAO water stress coefficient in predicting evapotranspiration under water-limiting conditions appears to overpredict water use for green gram”
Claim · model-written summary
The authors concluded that substantial irrigation water savings are available for green gram.
- Taxon
- green gramVigna radiata var. radiatae1
- Outcome
- considerable water savingse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“considerable water savings are available for this crop”
e1“water use for green gram”
The same questions in other papers
irrigation · pest · Vigna radiata (mung bean)Positive and negative results
1 in the opposite direction
- no effect
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.