Abstract
A field trial was conducted at Al-Mishkhab Rice Research Station during 2011 season, to assess the effects of irrigation intervals on water productivity and yield components of three local rice varieties (Anber 33, Yasamin, and Furat 1). Two irrigation methods were practiced: continuous ponding and intermittent water application where irrigation water was scheduled at three different intervals (3, 5 and 7 days).The trial was performed as split plot based on a complete randomized blocks design (RCBD) having three replications. Seedlings were transplanted 20 days following germination into rows. 30 cm a part with 20 cm distance between plants within rows. The results showed that the 3-days, 5-days and 7-days intervals of irrigation consumed 50%, 45% and 36% as much water, as continuous flood. The 3-days irrigation interval increased yield by 2% compared with continuous flood while the 7-days irrigation interval decreased yield by 15% compared with continuous flood. Furat1 and Yasamin varieties manifested higher water compared with Anber33. Water productivity of Furat 1 and Yasamin were 0.6108kg.m-3 and 0.5667kg.m-3 respectively. It is concluded that replacing current continuous submergence of rice crops with 3-days interval irrigation will lead to a substantial saving of water, about 50%, while raising yields; and having 7-days interval irrigation could indeed give much-improved productivity of water (grain produced per unit of water).This latter option should be considered even if it does not maximize grain produced per unit of land area in as much as water is becoming a resource more limiting than land for Iraqi agriculture. This water management strategy could help to deal with the shortage in water that is facing Iraqi farmers now and in the foreseeable future.
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Claims 10
Claim · model-written summary
A 3-day irrigation interval consumed 50% as much water as continuous flood in rice.
- Taxon
- rice
Oryza sativae0 - Treatment
- 3-dayse1
- Outcome
- watere1
- Direction
- consumede1
- Value
- 50%e1
- Comparator
- continuous floode1
- Setting
- Al-Mishkhab Rice Research Statione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A field trial was conducted at Al-Mishkhab Rice Research Station during 2011 season, to assess the effects of irrigation intervals on water productivity and yield components of three local rice varieties”
e1“The results showed that the 3-days, 5-days and 7-days intervals of irrigation consumed 50%, 45% and 36% as much water, as continuous flood”
Claim · model-written summary
A 5-day irrigation interval consumed 45% as much water as continuous flood in rice.
- Taxon
- riceOryza sativae0
- Treatment
- 5-dayse1
- Outcome
- watere1
- Direction
- consumede1
- Value
- 45%e1
- Comparator
- continuous floode1
- Setting
- Al-Mishkhab Rice Research Statione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A field trial was conducted at Al-Mishkhab Rice Research Station during 2011 season, to assess the effects of irrigation intervals on water productivity and yield components of three local rice varieties”
e1“The results showed that the 3-days, 5-days and 7-days intervals of irrigation consumed 50%, 45% and 36% as much water, as continuous flood”
Claim · model-written summary
A 7-day irrigation interval consumed 36% as much water as continuous flood in rice.
- Taxon
- riceOryza sativae0
- Treatment
- 7-dayse1
- Outcome
- watere1
- Direction
- consumede1
- Value
- 36%e1
- Comparator
- continuous floode1
- Setting
- Al-Mishkhab Rice Research Statione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A field trial was conducted at Al-Mishkhab Rice Research Station during 2011 season, to assess the effects of irrigation intervals on water productivity and yield components of three local rice varieties”
e1“The results showed that the 3-days, 5-days and 7-days intervals of irrigation consumed 50%, 45% and 36% as much water, as continuous flood”
Claim · model-written summary
A 3-day irrigation interval increased rice yield by 2% compared with continuous flood.
- Taxon
- riceOryza sativae0
- Treatment
- 3-days irrigation intervale2
- Outcome
- yielde2
- Direction
- increasede2
- Value
- 2%e2
- Comparator
- continuous floode2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A field trial was conducted at Al-Mishkhab Rice Research Station during 2011 season, to assess the effects of irrigation intervals on water productivity and yield components of three local rice varieties”
e2“The 3-days irrigation interval increased yield by 2% compared with continuous flood”
Claim · model-written summary
A 7-day irrigation interval decreased rice yield by 15% compared with continuous flood.
- Taxon
- riceOryza sativae0
- Treatment
- 7-days irrigation intervale3
- Outcome
- yielde3
- Direction
- decreasede3
- Value
- 15%e3
- Comparator
- continuous floode3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A field trial was conducted at Al-Mishkhab Rice Research Station during 2011 season, to assess the effects of irrigation intervals on water productivity and yield components of three local rice varieties”
e3“while the 7-days irrigation interval decreased yield by 15% compared with continuous flood”
Claim · model-written summary
Furat 1 and Yasamin manifested higher water use than Anber 33 in rice.
- Taxon
- riceOryza sativae0
- Material
- Furat1 and Yasamine4
- Outcome
- watere4
- Direction
- highere4
- Comparator
- Anber33e4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A field trial was conducted at Al-Mishkhab Rice Research Station during 2011 season, to assess the effects of irrigation intervals on water productivity and yield components of three local rice varieties”
e4“Furat1 and Yasamin varieties manifested higher water compared with Anber33”
Claim · model-written summary
Water productivity of Furat 1 rice was 0.6108 kg/m3.
- Taxon
- riceOryza sativae0
- Material
- Furat 1e5
- Outcome
- Water productivitye5
- Value
- 0.6108kg.m-3e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A field trial was conducted at Al-Mishkhab Rice Research Station during 2011 season, to assess the effects of irrigation intervals on water productivity and yield components of three local rice varieties”
e5“Water productivity of Furat 1 and Yasamin were 0.6108kg.m-3 and 0.5667kg.m-3 respectively”
Claim · model-written summary
Water productivity of Yasamin rice was 0.5667 kg/m3.
- Taxon
- riceOryza sativae0
- Material
- Yasamine5
- Outcome
- Water productivitye5
- Value
- 0.5667kg.m-3e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A field trial was conducted at Al-Mishkhab Rice Research Station during 2011 season, to assess the effects of irrigation intervals on water productivity and yield components of three local rice varieties”
e5“Water productivity of Furat 1 and Yasamin were 0.6108kg.m-3 and 0.5667kg.m-3 respectively”
Claim · model-written summary
Replacing continuous submergence of rice with 3-day interval irrigation is recommended to save about 50% of water while raising yields.
- Taxon
- rice cropsOryza sativae6
- Treatment
- 3-days interval irrigatione6
- Outcome
- saving of watere6
- Value
- about 50%e6
- Qualifier
- while raising yieldse6
- Comparator
- continuous submergencee6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A field trial was conducted at Al-Mishkhab Rice Research Station during 2011 season, to assess the effects of irrigation intervals on water productivity and yield components of three local rice varieties”
e6“replacing current continuous submergence of rice crops with 3-days interval irrigation will lead to a substantial saving of water, about 50%, while raising yields”
Claim · model-written summary
A 7-day irrigation interval could give much-improved water productivity in rice.
- Taxon
- riceOryza sativae0
- Treatment
- 7-days interval irrigatione7
- Outcome
- productivity of watere7
- Qualifier
- could indeed givee7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A field trial was conducted at Al-Mishkhab Rice Research Station during 2011 season, to assess the effects of irrigation intervals on water productivity and yield components of three local rice varieties”
e7“having 7-days interval irrigation could indeed give much-improved productivity of water”
The same questions in other papers
irrigation · yield · Oryza sativa (rice)Positive and negative results
905 papers in the same direction as this paper · 201 in the opposite direction · 64 reporting no difference from an alternative
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- positive
- positive
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