Abstract
Abstract There is a growing realization that an increasing number of countries are approaching full utilization of their conventional water resources and that the quantity of good-quality water supplies available to agriculture is diminishing. Effects of irrigation regime and irrigation water salinity on bell pepper including yield, fruit number and quality, vegetative and root growth, evapotranspiration and water use efficiency were investigated in this study by conducting two different experiments. Six different salinity levels of irrigation water and four different irrigation regimes were used as treatments. Considering the results from irrigation water salinity experiment, it can be concluded that as soil salinity increases, water consumption, water use efficiency, yield and other vegetative growth parameters of bell pepper were decreased. A polynomial relationship between soil salinity and water consumption was observed. It was found that bell pepper is moderately sensitive to salinity with a 1.2 dS m−1 threshold and a 10.9% slope value. In the irrigation regime experiment, limited irrigation caused decreases in water consumption, yield and vegetative growth of bell pepper. Yield response factors were close in the cases of irrigation regime (1.50) and irrigation water salinity (1.40). Total soluble solids of bell pepper were increased due to both irrigation water salinity and water application rate but not dry matter ratio. Considerable water consumption decreases because of salinity were determined. Therefore, the effect of irrigation water salinity should be considered in irrigation management to prevent excess saline water application and to protect the environment.
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Claims 16
Claim · model-written summary
Increasing soil salinity decreased pepper water consumption.
Verbatim
e0“as soil salinity increases, water consumption, water use efficiency, yield and other vegetative growth parameters of bell pepper were decreased”
Claim · model-written summary
Increasing soil salinity decreased pepper water use efficiency.
Verbatim
e0“as soil salinity increases, water consumption, water use efficiency, yield and other vegetative growth parameters of bell pepper were decreased”
Claim · model-written summary
Increasing soil salinity decreased pepper yield.
Verbatim
e0“as soil salinity increases, water consumption, water use efficiency, yield and other vegetative growth parameters of bell pepper were decreased”
Claim · model-written summary
Increasing soil salinity decreased vegetative growth parameters.
Verbatim
e0“as soil salinity increases, water consumption, water use efficiency, yield and other vegetative growth parameters of bell pepper were decreased”
Claim · model-written summary
Soil salinity and water consumption had a polynomial relationship.
- Taxon
- bell peppert0
- Treatment
- soil salinitye0
- Outcome
- water consumptione0
- Qualifier
- polynomial relationshipe0
Not reportedDirection
Verbatim
e0“A polynomial relationship between soil salinity and water consumption was observed”
t0“bell pepper”
Claim · model-written summary
Bell pepper was moderately salinity sensitive, with a 1.2 dS m−1 threshold.
Verbatim
e0“bell pepper is moderately sensitive to salinity with a 1.2 dS m−1 threshold and a 10.9% slope value”
Claim · model-written summary
The salinity response slope was 10.9%.
Verbatim
e0“bell pepper is moderately sensitive to salinity with a 1.2 dS m−1 threshold and a 10.9% slope value”
Claim · model-written summary
Limited irrigation decreased water consumption.
Not reportedComparator
Verbatim
e0“limited irrigation caused decreases in water consumption, yield and vegetative growth of bell pepper”
Claim · model-written summary
Limited irrigation decreased yield.
Not reportedComparator
Verbatim
e0“limited irrigation caused decreases in water consumption, yield and vegetative growth of bell pepper”
Claim · model-written summary
Limited irrigation decreased vegetative growth.
Not reportedComparator
Verbatim
e0“limited irrigation caused decreases in water consumption, yield and vegetative growth of bell pepper”
Claim · model-written summary
The irrigation regime yield response factor was 1.50.
Verbatim
e0“Yield response factors were close in the cases of irrigation regime (1.50) and irrigation water salinity (1.40)”
t0“bell pepper”
Claim · model-written summary
The irrigation water salinity yield response factor was 1.40.
Verbatim
e0“Yield response factors were close in the cases of irrigation regime (1.50) and irrigation water salinity (1.40)”
t0“bell pepper”
Claim · model-written summary
Irrigation water salinity increased total soluble solids.
- Taxon
- bell peppere0
- Treatment
- irrigation water salinitye0
- Outcome
- Total soluble solidse0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“Total soluble solids of bell pepper were increased due to both irrigation water salinity and water application rate but not dry matter ratio”
Claim · model-written summary
Water application rate increased total soluble solids.
- Taxon
- bell peppere0
- Treatment
- water application ratee0
- Outcome
- Total soluble solidse0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“Total soluble solids of bell pepper were increased due to both irrigation water salinity and water application rate but not dry matter ratio”
Claim · model-written summary
The treatments did not increase dry matter ratio.
Not reportedComparator
Verbatim
e0“Total soluble solids of bell pepper were increased due to both irrigation water salinity and water application rate but not dry matter ratio”
Claim · model-written summary
The authors recommend accounting for irrigation water salinity in irrigation management.
Verbatim
e0“the effect of irrigation water salinity should be considered in irrigation management to prevent excess saline water application and to protect the environment”
t0“bell pepper”
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