Abstract
High groundwater salinity, a high water table and secondary soil salinization are dominant conditions in eastern Isfahan Province, Iran . This region has a low annual rainfall, high annual evaporation demand, saline soils and limited fresh water supplies. To investigate the effects of irrigation deficit and salinity on cantaloupe ( Cucumis melo L. var. cantalupensis ) production, a field experiment was performed at the Salinity and Drainage Research Station of Rudasht, 65 km East of Isfahan. Irrigation treatments were T65, T80 and T95 (irrigation after 65, 80 and 95 percent of cumulative evaporation from Class A pan, respectively), each having three replicates. EC of irrigation water was 5.25 dS m -1 ; irrigation water depth for the whole growing period was 300, 342 and 384 mm, for T65, T80 and T95 treatments, respectively. The results showed that T65 and T80 irrigation treatments significantly reduced fresh yield, number of fruit, fruit weight per plant and water use efficiency. Fresh-fruit yield was 31.73, 38.48 and 54.34 ton ha -1 , and water use efficiency was 10.58, 11.25 and 14.16 kg m -3 in T65, T80 and T95 irrigation treatments, respectively. A second order polynomial equation was fitted (R 2 = 0.99) for production function (yield vs. irrigation water depth). The relationship between water use efficiency and irrigation water depth was also a second order polynomial equation (R 2 = 0.97). Nitrogen and potassium content of fruits in T65 treatment was higher than T80 and T95 treatments. Effect of irrigation regimes was not significant on P and Na content of fruits, but was significant on Cl - content (P< 0.05). Overall results showed that cantaloupe is a crop sensitive to soil moisture stress.
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Claims 9
Claim · model-written summary
Irrigation at T65 and T80 significantly reduced cantaloupe fresh yield, number of fruit and fruit weight per plant relative to T95.
- Taxon
- Cantaloupe
Cucumis melo var. cantalupot0 - Treatment
- T65 and T80 irrigation treatmentse1
- Outcome
- fresh yield, number of fruit, fruit weight per plante1
- Direction
- reducede1
- Comparator
- T95e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cantaloupe”
e1“T65 and T80 irrigation treatments significantly reduced fresh yield, number of fruit, fruit weight per plant and water use efficiency”
e2“Irrigation treatments were T65, T80 and T95 (irrigation after 65, 80 and 95 percent of cumulative evaporation from Class A pan, respectively)”
Claim · model-written summary
Irrigation at T65 and T80 significantly reduced cantaloupe water use efficiency relative to T95.
- Taxon
- CantaloupeCucumis melo var. cantalupot0
- Treatment
- T65 and T80 irrigation treatmentse1
- Outcome
- water use efficiencye1
- Direction
- reducede1
- Comparator
- T95e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cantaloupe”
e1“T65 and T80 irrigation treatments significantly reduced fresh yield, number of fruit, fruit weight per plant and water use efficiency”
e2“Irrigation treatments were T65, T80 and T95 (irrigation after 65, 80 and 95 percent of cumulative evaporation from Class A pan, respectively)”
Claim · model-written summary
Fresh-fruit yield of cantaloupe was 31.73, 38.48 and 54.34 ton/ha under T65, T80 and T95.
- Taxon
- CantaloupeCucumis melo var. cantalupot0
- Treatment
- T65, T80 and T95 irrigation treatmentse3
- Outcome
- Fresh-fruit yielde3
- Value
- 31.73, 38.48 and 54.34 ton ha -1e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cantaloupe”
e3“Fresh-fruit yield was 31.73, 38.48 and 54.34 ton ha -1 , and water use efficiency was 10.58, 11.25 and 14.16 kg m -3 in T65, T80 and T95 irrigation treatments, respectively”
Claim · model-written summary
Water use efficiency of cantaloupe was 10.58, 11.25 and 14.16 kg m-3 under T65, T80 and T95.
- Taxon
- CantaloupeCucumis melo var. cantalupot0
- Treatment
- T65, T80 and T95 irrigation treatmentse3
- Outcome
- water use efficiencye3
- Value
- 10.58, 11.25 and 14.16 kg m -3e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cantaloupe”
e3“Fresh-fruit yield was 31.73, 38.48 and 54.34 ton ha -1 , and water use efficiency was 10.58, 11.25 and 14.16 kg m -3 in T65, T80 and T95 irrigation treatments, respectively”
Claim · model-written summary
Fruit nitrogen and potassium contents were higher under T65 than under T80 and T95.
- Taxon
- CantaloupeCucumis melo var. cantalupot0
- Treatment
- T65 treatmente4
- Outcome
- Nitrogen and potassium content of fruitse4
- Direction
- highere4
- Comparator
- T80 and T95 treatmentse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cantaloupe”
e4“Nitrogen and potassium content of fruits in T65 treatment was higher than T80 and T95 treatments”
Claim · model-written summary
Irrigation regime did not significantly affect phosphorus and sodium contents of cantaloupe fruit.
- Taxon
- CantaloupeCucumis melo var. cantalupot0
- Treatment
- irrigation regimese5
- Outcome
- P and Na content of fruitse5
- Direction
- no_changeinferrede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cantaloupe”
e5“Effect of irrigation regimes was not significant on P and Na content of fruits”
Claim · model-written summary
The production function of cantaloupe yield against irrigation water depth was fitted by a second-order polynomial (R 2 = 0.99).
- Taxon
- CantaloupeCucumis melo var. cantalupot0
- Treatment
- irrigation water depthe0
- Outcome
- production function (yield vs. irrigation water depth)e0
- Value
- R 2 = 0.99e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cantaloupe”
e0“A second order polynomial equation was fitted (R 2 = 0.99) for production function (yield vs. irrigation water depth)”
Claim · model-written summary
The relationship between cantaloupe water use efficiency and irrigation water depth was fitted by a second-order polynomial (R 2 = 0.97).
- Taxon
- CantaloupeCucumis melo var. cantalupot0
- Treatment
- irrigation water depthe1
- Outcome
- The relationship between water use efficiency and irrigation water depthe1
- Value
- R 2 = 0.97e1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cantaloupe”
e1“The relationship between water use efficiency and irrigation water depth was also a second order polynomial equation (R 2 = 0.97)”
Claim · model-written summary
Cantaloupe is a crop sensitive to soil moisture stress.
- Taxon
- cantaloupeCucumis melo var. cantalupoe7
- Outcome
- sensitive to soil moisture stresse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cantaloupe”
e7“Overall results showed that cantaloupe is a crop sensitive to soil moisture stress”
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