Abstract
Land and crop management practices were studied to determine yield stability and feasible measures to improve productivity of dry-seeded rice. Variability of yields among farms that had grown dry-seeded rice on the entire farm every season during the period 1991–95 was lower than among farms that had consistently grown transplanted rice during the same period. Weed control is a major challenge for dry-seeded rice and almost all farmers used herbicides to control weeds. Farmers who grew a non-rice crop before the rice season had better weed control than those who did not. Ploughing intensity and the type of implement used for land preparation were not significant factors for weed control. Field bund management was one determinant of productivity differences among farmers. The use of cross-bunds or periphery- and cross-bunds improved the efficiency of rainwater conservation and input use, and increased yields. Fields with higher levelling precision had lower water stress and produced better yields. On average, a farmer lost 0.93 t ha −1 yield due to land-levelling deficiency. The division of large and medium farms into a number of smaller plots improved levelling precision and water control, resulting in higher yields.
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Claims 12
Claim · model-written summary
Yield variability was lower among farms growing dry-seeded rice every season in 1991-95 than among farms consistently growing transplanted rice.
- Taxon
- rice
Oryza sativae1 - Treatment
- dry-seeded ricee1
- Outcome
- Variability of yieldse1
- Direction
- lowere1
- Comparator
- transplanted ricee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Variability of yields among farms that had grown dry-seeded rice on the entire farm every season during the period 1991–95 was lower than among farms that had consistently grown transplanted rice during the same period”
Claim · model-written summary
Almost all farmers used herbicides to control weeds in dry-seeded rice, and weed control is a major challenge.
Verbatim
e2“Weed control is a major challenge for dry-seeded rice and almost all farmers used herbicides to control weeds”
Claim · model-written summary
Farmers who grew a non-rice crop before the rice season had better weed control than those who did not.
- Taxon
- riceOryza sativae3
- Treatment
- grew a non-rice crop before the rice seasone3
- Interactor
- weede3weed
- Outcome
- weed controle3
- Direction
- bettere3
- Comparator
- those who did note3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Farmers who grew a non-rice crop before the rice season had better weed control than those who did not”
Claim · model-written summary
Ploughing intensity and the type of implement used for land preparation were not significant factors for weed control.
- Taxon
- DRY-SEEDED RICEt0
- Treatment
- Ploughing intensity and the type of implement used for land preparatione4
- Interactor
- weede4weed
- Outcome
- weed controle4
Not reportedComparatorDirection
Verbatim
e4“Ploughing intensity and the type of implement used for land preparation were not significant factors for weed control”
t0“DRY-SEEDED RICE”
Claim · model-written summary
Field bund management was one determinant of productivity differences among farmers.
Not reportedDirection
Verbatim
e5“Field bund management was one determinant of productivity differences among farmers”
t0“DRY-SEEDED RICE”
Claim · model-written summary
Cross-bunds or periphery- and cross-bunds improved the efficiency of rainwater conservation and input use.
- Taxon
- DRY-SEEDED RICEt0
- Treatment
- cross-bunds or periphery- and cross-bundse6
- Outcome
- efficiency of rainwater conservation and input usee6
- Direction
- improvede6
Not reportedComparator
Verbatim
e6“The use of cross-bunds or periphery- and cross-bunds improved the efficiency of rainwater conservation and input use, and increased yields”
t0“DRY-SEEDED RICE”
Claim · model-written summary
Cross-bunds or periphery- and cross-bunds increased yields.
- Taxon
- DRY-SEEDED RICEt0
- Treatment
- cross-bunds or periphery- and cross-bundse6
- Outcome
- yieldse6
- Direction
- increasede6
Not reportedComparator
Verbatim
e6“The use of cross-bunds or periphery- and cross-bunds improved the efficiency of rainwater conservation and input use, and increased yields”
t0“DRY-SEEDED RICE”
Claim · model-written summary
Fields with higher levelling precision had lower water stress.
Verbatim
e7“Fields with higher levelling precision had lower water stress and produced better yields”
t0“DRY-SEEDED RICE”
Claim · model-written summary
Fields with higher levelling precision produced better yields.
Verbatim
e7“Fields with higher levelling precision had lower water stress and produced better yields”
t0“DRY-SEEDED RICE”
Claim · model-written summary
On average a farmer lost 0.93 t/ha of yield because of land-levelling deficiency.
- Taxon
- DRY-SEEDED RICEt0
- Treatment
- land-levelling deficiencye1
- Outcome
- yielde1
- Direction
- loste1
- Value
- 0.93 t ha −1e1
Not reportedComparator
Verbatim
e1“On average, a farmer lost 0.93 t ha −1 yield due to land-levelling deficiency”
t0“DRY-SEEDED RICE”
Claim · model-written summary
Dividing large and medium farms into smaller plots improved levelling precision and water control.
- Taxon
- DRY-SEEDED RICEt0
- Treatment
- division of large and medium farms into a number of smaller plotse1
- Outcome
- levelling precision and water controle1
- Direction
- improvede1
Not reportedComparator
Verbatim
e1“The division of large and medium farms into a number of smaller plots improved levelling precision and water control, resulting in higher yields”
t0“DRY-SEEDED RICE”
Claim · model-written summary
Dividing large and medium farms into smaller plots resulted in higher yields.
- Taxon
- DRY-SEEDED RICEt0
- Treatment
- division of large and medium farms into a number of smaller plotse1
- Outcome
- yieldse1
- Direction
- highere1
Not reportedComparator
Verbatim
e1“The division of large and medium farms into a number of smaller plots improved levelling precision and water control, resulting in higher yields”
t0“DRY-SEEDED RICE”
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Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.