Abstract
Deficit irrigation can play an important role in increasing water use efficiency (WUE) and reduced amount of irrigation. Deficit irrigation generally refers to fully irrigated crops where water is reduced or withheld during certain growth stages. In this study, a series of greenhouse and open field experiments were conducted using a deficit irrigation program on cucumber crops under drip irrigation during 2007-2010 growing seasons. The layout of the experiment was a completely randomized design with four replicates. Irrigation treatments consisted of five levels of ETc (30, 40, 60, 80, and 100% of ETc) in addition to traditional practice by farmers. At 60 and 80% treatments, deficit irrigation tested at different growth stages (development, med, and late stages of the growth) for a total of 14 treatments at each experiment. The maximum amount of water applied to the crop was 332 mm for the 100%ETc treatment while the minimum water applied was 100 mm for 30%Etc treatment, and 600 mm for traditional practice by the farmers in the region. The calculated ETc ranged from between 95 and 316 mm for the different treatments. The objective of the study was to determine the crop water requirements in both the open field and greenhouse and calculate crop response factor (ky) and WUE of cucumber crop using a deficit irrigation program at different stages of growth. Results indicated that a cucumber could stand the shortage of water during the growth and crop response (Ky) values ranging between 0.7 and 0.98. However, the amount of water used was much lower than that of the traditional method used by farmers in the region. Water use efficiency (WUE) and water productivity (WP) values increased when water amounts decreased with the exception of the traditional irrigation; these values decreased to 45.6 and 24 kg/m 3 , respectively. The highest values at much stressed treatment 30% ETc.
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Claims 8
Claim · model-written summary
Cucumber could withstand a shortage of water during growth.
- Taxon
- cucumber
Cucumis sativuse2 - Outcome
- could stand the shortage of watere2
- Qualifier
- during the growthe2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Results indicated that a cucumber could stand the shortage of water during the growth and crop response (Ky) values ranging between 0.7 and 0.98”
Claim · model-written summary
The cucumber crop response factor Ky ranged between 0.7 and 0.98.
- Taxon
- cucumberCucumis sativuse2
- Outcome
- crop response (Ky)e2
- Value
- between 0.7 and 0.98e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Results indicated that a cucumber could stand the shortage of water during the growth and crop response (Ky) values ranging between 0.7 and 0.98”
Claim · model-written summary
The calculated crop water use ETc ranged between 95 and 316 mm across the treatments.
- Taxon
- cucumberCucumis sativuse1
- Outcome
- calculated ETce3
- Value
- between 95 and 316 mme3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“deficit irrigation program on cucumber crops under drip irrigation”
e3“The calculated ETc ranged from between 95 and 316 mm for the different treatments”
Claim · model-written summary
Deficit irrigation used much less water than the traditional farmer method in the region.
- Taxon
- cucumberCucumis sativuse1
- Treatment
- deficit irrigation programe1
- Outcome
- amount of water usede4
- Direction
- much lowere4
- Comparator
- the traditional method used by farmers in the regione4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“deficit irrigation program on cucumber crops under drip irrigation”
e4“However, the amount of water used was much lower than that of the traditional method used by farmers in the region”
Claim · model-written summary
Water use efficiency and water productivity increased when water amounts were decreased.
- Taxon
- cucumberCucumis sativuse1
- Treatment
- water amounts decreasede5
- Outcome
- Water use efficiency (WUE) and water productivity (WP)e5
- Direction
- increasede5
- Qualifier
- with the exception of the traditional irrigatione5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“deficit irrigation program on cucumber crops under drip irrigation”
e5“Water use efficiency (WUE) and water productivity (WP) values increased when water amounts decreased with the exception of the traditional irrigation”
Claim · model-written summary
Under traditional irrigation, water use efficiency decreased to 45.6.
- Taxon
- cucumberCucumis sativuse1
- Treatment
- traditional irrigatione5
- Outcome
- Water use efficiency (WUE)e5
- Direction
- decreasede6
- Value
- 45.6e6
- Comparator
- water amounts decreasede5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“deficit irrigation program on cucumber crops under drip irrigation”
e5“Water use efficiency (WUE) and water productivity (WP) values increased when water amounts decreased with the exception of the traditional irrigation”
e6“these values decreased to 45.6 and 24 kg/m 3 , respectively”
Claim · model-written summary
Under traditional irrigation, water productivity decreased to 24 kg/m 3.
- Taxon
- cucumberCucumis sativuse1
- Treatment
- traditional irrigatione5
- Outcome
- water productivity (WP)e5
- Direction
- decreasede6
- Value
- 24 kg/m 3e6
- Comparator
- water amounts decreasede5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“deficit irrigation program on cucumber crops under drip irrigation”
e5“Water use efficiency (WUE) and water productivity (WP) values increased when water amounts decreased with the exception of the traditional irrigation”
e6“these values decreased to 45.6 and 24 kg/m 3 , respectively”
Claim · model-written summary
Water use efficiency and water productivity were highest at 30% ETc, the most stressed treatment.
- Taxon
- cucumberCucumis sativuse1
- Treatment
- 30% ETce7
- Outcome
- The highest valuese7
- Direction
- higheste7
- Qualifier
- much stressed treatmente7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“deficit irrigation program on cucumber crops under drip irrigation”
e7“The highest values at much stressed treatment 30% ETc”
The same questions in other papers
irrigation · physiology: water · Cucumis sativus (cucumber)Positive and negative results
4 papers in the same direction as this paper · 22 in the opposite direction
- positive
- positive
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