Abstract
Two field experiments were conducted through 2018 and 2019 summer growing seasons at Sakha Agricultural Research Station, Kafrelsheikh, Egypt to study effect of irrigation intervals and weed control for maximizing yield and productivity of irrigation water on Sakha 107 and Giza 179 rice cultivars. A strip split-plot experimental design, with three replications was used in both seasons. Three irrigation intervals i.e; irrigation every three days, every six days and every nine days were assigned in horizontal plots. Two rice cultivars viz; Sakha 107 and Giza 179 were randomly distributed in vertical plots. Six weed control treatments i.e., Saturn 50% EC (thiobencarb), Ronstar 25% EC (oxadiazon), Saturn followed by (fb) Granite 24% SC (penoxsulam), Ronstar fb Granite, hand weeding and weedy check were allocated in the sub-plots. The resultsof both seasons showed that, irrigation every 3-days recorded the lowest dry weights of E crus-galli and total weeds while, irrigation every 9-days recorded the lowest dry weights of A. baccifera and C. difformis. The highest rice dry weight, number of panicle m-2, number of filled grain panicle-1, panicle weight and rice grain yield were recorded by irrigation every 3-days as compared to 6 and 9 days. Rice cultivar Giza 179 exceeded Sakha 107, it recorded the lowest dry weights of A. baccifera, E crus-galli and total weeds in addition, increased number of panicle m-2, number of filled grain panicle-1 and rice grain yield while, the highest panicle weight was recorded by Sakha 107. Application of Ronstar fb Granite at recommended dosesachieved the best weed management, the highest weed control efficiency (%), rice grain yield and its attributes as well as productivity of irrigation water (PIW) compared to other treatments. The amount of irrigation water applied was decreased by 15% and 31% for six and nine days compared to three days, while productivity of irrigation water was taken the descending order six > three > nine days. To achieve the best weed control efficiency (%), yield and its attributes as well as save irrigation water and promote PIW, it could be apply irrigation every 6-days with Giza 179 cv treated by Ronstar fb Granite at recommended doses. But in case of water shortage, it could be apply irrigation every 9-days with Sakha 107 cv treated by Ronstar fb Granite at recommended doses.
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Claims 16
Claim · model-written summary
Irrigation every three days gave the lowest E crus-galli dry weight.
- Taxon
- rice
Oryza sativat0 - Treatment
- irrigation every 3-dayse0
- Interactor
- E crus-gallie0weed
- Outcome
- dry weights of E crus-gallie0
- Direction
- loweste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“irrigation every 3-days recorded the lowest dry weights of E crus-galli and total weeds”
t0“Rice”
Claim · model-written summary
Irrigation every three days gave the lowest total weed dry weight.
- Taxon
- riceOryza sativat0
- Treatment
- irrigation every 3-dayse0
- Outcome
- dry weights of E crus-galli and total weedse0
- Direction
- loweste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“irrigation every 3-days recorded the lowest dry weights of E crus-galli and total weeds”
t0“Rice”
Claim · model-written summary
Irrigation every nine days gave the lowest A. baccifera dry weight.
- Taxon
- riceOryza sativat0
- Treatment
- irrigation every 9-dayse0
- Interactor
- A. bacciferae0weed
- Outcome
- dry weights of A. bacciferae0
- Direction
- loweste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“irrigation every 9-days recorded the lowest dry weights of A. baccifera and C. difformis”
t0“Rice”
Claim · model-written summary
Irrigation every nine days gave the lowest C. difformis dry weight.
- Taxon
- riceOryza sativat0
- Treatment
- irrigation every 9-dayse0
- Interactor
- C. difformise0weed
- Outcome
- dry weights of A. baccifera and C. difformise0
- Direction
- loweste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“irrigation every 9-days recorded the lowest dry weights of A. baccifera and C. difformis”
t0“Rice”
Claim · model-written summary
Irrigation every three days gave the highest rice dry weight and panicle number relative to six and nine days.
- Taxon
- riceOryza sativae0
- Treatment
- irrigation every 3-dayse0
- Outcome
- rice dry weight, number of panicle m-2e0
- Direction
- higheste0
- Comparator
- 6 and 9 dayse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest rice dry weight, number of panicle m-2, number of filled grain panicle-1, panicle weight and rice grain yield were recorded by irrigation every 3-days as compared to 6 and 9 days.”
Claim · model-written summary
Irrigation every three days gave the highest filled grains per panicle, panicle weight and grain yield relative to six and nine days.
- Taxon
- riceOryza sativae0
- Treatment
- irrigation every 3-dayse0
- Outcome
- number of filled grain panicle-1, panicle weight and rice grain yielde0
- Direction
- higheste0
- Comparator
- 6 and 9 dayse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest rice dry weight, number of panicle m-2, number of filled grain panicle-1, panicle weight and rice grain yield were recorded by irrigation every 3-days as compared to 6 and 9 days.”
Claim · model-written summary
Giza 179 had the lowest A. baccifera, E crus-galli and total weed dry weights relative to Sakha 107.
- Taxon
- RiceOryza sativae0
- Material
- Giza 179e0
- Interactor
- A. bacciferae0weed
- Outcome
- dry weights of A. baccifera, E crus-galli and total weedse0
- Direction
- loweste0
- Comparator
- Sakha 107e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rice cultivar Giza 179 exceeded Sakha 107, it recorded the lowest dry weights of A. baccifera, E crus-galli and total weeds”
Claim · model-written summary
Giza 179 had more panicles, filled grains per panicle and grain yield than Sakha 107.
- Taxon
- RiceOryza sativae0
- Material
- Giza 179e0
- Outcome
- number of panicle m-2, number of filled grain panicle-1 and rice grain yielde0
- Direction
- increasede0
- Comparator
- Sakha 107e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rice cultivar Giza 179 exceeded Sakha 107, it recorded the lowest dry weights of A. baccifera, E crus-galli and total weeds in addition, increased number of panicle m-2, number of filled grain panicle-1 and rice grain yield”
Claim · model-written summary
Sakha 107 had the highest panicle weight.
- Taxon
- RiceOryza sativat0
- Material
- Sakha 107e0
- Outcome
- panicle weighte0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest panicle weight was recorded by Sakha 107”
t0“Rice”
Claim · model-written summary
Ronstar followed by Granite at recommended doses gave the best weed management and highest weed control efficiency.
- Taxon
- RiceOryza sativat0
- Treatment
- Ronstar fb Granite at recommended dosese0
- Outcome
- weed management, the highest weed control efficiency (%)e0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of Ronstar fb Granite at recommended dosesachieved the best weed management, the highest weed control efficiency (%)”
t0“Rice”
Claim · model-written summary
Ronstar followed by Granite at recommended doses gave the highest rice grain yield, yield attributes and irrigation water productivity.
- Taxon
- RiceOryza sativat0
- Treatment
- Ronstar fb Granite at recommended dosese0
- Outcome
- rice grain yield and its attributes as well as productivity of irrigation water (PIW)e0
- Direction
- higheste0
- Comparator
- other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of Ronstar fb Granite at recommended dosesachieved the best weed management, the highest weed control efficiency (%), rice grain yield and its attributes as well as productivity of irrigation water (PIW) compared to other treatments.”
t0“Rice”
Claim · model-written summary
Six-day irrigation reduced applied water by 15% compared with three-day irrigation.
- Taxon
- RiceOryza sativat0
- Treatment
- sixe0
- Outcome
- amount of irrigation water appliede0
- Direction
- decreasede0
- Value
- 15%e0
- Comparator
- three dayse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The amount of irrigation water applied was decreased by 15% and 31% for six and nine days compared to three days”
t0“Rice”
Claim · model-written summary
Nine-day irrigation reduced applied water by 31% compared with three-day irrigation.
- Taxon
- RiceOryza sativat0
- Treatment
- nine dayse0
- Outcome
- amount of irrigation water appliede0
- Direction
- decreasede0
- Value
- 31%e0
- Comparator
- three dayse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The amount of irrigation water applied was decreased by 15% and 31% for six and nine days compared to three days”
t0“Rice”
Claim · model-written summary
Irrigation water productivity ranked six days above three days above nine days.
- Taxon
- RiceOryza sativat0
- Outcome
- productivity of irrigation watere0
- Direction
- descendinge0
- Qualifier
- six > three > nine dayse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“productivity of irrigation water was taken the descending order six > three > nine days”
t0“Rice”
Claim · model-written summary
The authors recommend six-day irrigation of Giza 179 with Ronstar followed by Granite for weed control, yield and irrigation water productivity.
- Taxon
- RiceOryza sativat0
- Material
- Giza 179e0
- Outcome
- irrigation every 6-days with Giza 179 cv treated by Ronstar fb Granite at recommended dosese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“To achieve the best weed control efficiency (%), yield and its attributes as well as save irrigation water and promote PIW, it could be apply irrigation every 6-days with Giza 179 cv treated by Ronstar fb Granite at recommended doses.”
t0“Rice”
Claim · model-written summary
For water shortage, the authors recommend nine-day irrigation of Sakha 107 with Ronstar followed by Granite.
- Taxon
- RiceOryza sativat0
- Material
- Sakha 107e0
- Outcome
- irrigation every 9-days with Sakha 107 cv treated by Ronstar fb Granite at recommended dosese0
- Qualifier
- in case of water shortagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“But in case of water shortage, it could be apply irrigation every 9-days with Sakha 107 cv treated by Ronstar fb Granite at recommended doses.”
t0“Rice”
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