Abstract
Nadu Agricultural University, Coimbatore, India, to test components of the System of Rice Intensification (SRI) using hybrid rice variety CORH2. The following four factors were studied: seedling age (14-d-old seedlings vs 23-d-old seedlings), irrigation (limited vs conventional), weeding (weeds incorporated with a conoweeder vs manual removal of weeds), and nutrient management (recommended amount of fertilizer with and without green manure). The experiment was a strip-plot design in four replicates. The results show savings in irrigation water of 56% and 50% using conventional and young seedlings, respectively, without a significant effect on grain yield. The average grain yield for the limited irrigation treatment (6,352 kg ha–1) was not significantly different from that of the conventional irrigation practice (6,461 kg ha–1). No significant main effect of seedling age and nutrient management was found. In situ incorporation of weeds increased yield significantly to 6,737 kg ha–1 compared with that of conventional weeding of 6,076 kg ha–1. A significant interaction was found among weeding, seedling age, and nutrient management. The highest yields for both conventional and limited irrigation conditions were obtained with a combination of young seedlings, green manure application, and incorporation of weeds using a conoweeder. This implies that our attempts to reduce water use in rice cultivation will have to be accompanied with a set of appropriate agronomic measures.
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Claims 9
Claim · model-written summary
Limited irrigation with conventional seedlings saved 56% irrigation water.
- Taxon
- rice
Oryza sativae2 - Material
- CORH2e2
- Treatment
- limitede1
- Outcome
- irrigation watere0
- Direction
- savingse0
- Value
- 56%e0
- Qualifier
- conventionale0
- Comparator
- conventionale1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“savings in irrigation water of 56% and 50% using conventional and young seedlings, respectively”
e1“limited vs conventional”
e2“hybrid rice variety CORH2”
Claim · model-written summary
Limited irrigation with young seedlings saved 50% irrigation water.
- Taxon
- riceOryza sativae2
- Material
- CORH2e2
- Treatment
- limitede1
- Outcome
- irrigation watere0
- Direction
- savingse0
- Value
- 50%e0
- Qualifier
- young seedlingse0
- Comparator
- conventionale1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“savings in irrigation water of 56% and 50% using conventional and young seedlings, respectively”
e1“limited vs conventional”
e2“hybrid rice variety CORH2”
Claim · model-written summary
Limited irrigation grain yield of 6,352 kg ha–1 was not significantly different from conventional irrigation at 6,461 kg ha–1.
- Taxon
- riceOryza sativae1
- Treatment
- limited irrigation treatmente0
- Outcome
- grain yielde0
- Direction
- not significantly differente0
- Value
- 6,352 kg ha–1e0
- Qualifier
- 6,461 kg ha–1e0
- Comparator
- conventional irrigation practicee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“average grain yield for the limited irrigation treatment (6,352 kg ha–1) was not significantly different from that of the conventional irrigation practice (6,461 kg ha–1)”
e1“hybrid rice variety CORH2”
Claim · model-written summary
Seedling age had no significant main effect.
- Taxon
- riceOryza sativae2
- Treatment
- 14-d-old seedlingse1
- Outcome
- main effect of seedling agee0
- Direction
- No significante0
- Comparator
- 23-d-old seedlingse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No significant main effect of seedling age and nutrient management was found”
e1“seedling age (14-d-old seedlings vs 23-d-old seedlings)”
e2“hybrid rice variety CORH2”
Claim · model-written summary
Nutrient management had no significant main effect.
- Taxon
- riceOryza sativae2
- Treatment
- green manuree1
- Outcome
- main effect of seedling age and nutrient managemente0
- Direction
- No significante0
- Comparator
- without green manuree1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No significant main effect of seedling age and nutrient management was found”
e1“recommended amount of fertilizer with and without green manure”
e2“hybrid rice variety CORH2”
Claim · model-written summary
In situ weed incorporation increased yield to 6,737 kg ha–1 versus 6,076 kg ha–1 for conventional weeding.
- Taxon
- riceOryza sativae1
- Treatment
- In situ incorporation of weedse0
- Interactor
- weedse0weed
- Outcome
- yielde0
- Direction
- increasede0
- Value
- 6,737 kg ha–1e0
- Qualifier
- 6,076 kg ha–1e0
- Comparator
- conventional weedinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In situ incorporation of weeds increased yield significantly to 6,737 kg ha–1 compared with that of conventional weeding of 6,076 kg ha–1”
e1“hybrid rice variety CORH2”
Claim · model-written summary
Weeding, seedling age, and nutrient management interacted significantly.
- Taxon
- riceOryza sativae1
- Treatment
- weeding, seedling age, and nutrient managemente0
- Outcome
- interactione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A significant interaction was found among weeding, seedling age, and nutrient management”
e1“hybrid rice variety CORH2”
Claim · model-written summary
Young seedlings, green manure, and conoweeder weed incorporation produced the highest yields under both irrigation conditions.
- Taxon
- riceOryza sativae1
- Treatment
- combination of young seedlings, green manure application, and incorporation of weeds using a conoweedere0
- Interactor
- weedse0weed
- Outcome
- yieldse0
- Direction
- higheste0
- Qualifier
- both conventional and limited irrigation conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“highest yields for both conventional and limited irrigation conditions were obtained with a combination of young seedlings, green manure application, and incorporation of weeds using a conoweeder”
e1“hybrid rice variety CORH2”
Claim · model-written summary
The authors recommend accompanying reduced rice water use with appropriate agronomic measures.
- Taxon
- riceOryza sativae0
- Outcome
- reduce water use in rice cultivation will have to be accompanied with a set of appropriate agronomic measurese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reduce water use in rice cultivation will have to be accompanied with a set of appropriate agronomic measures”
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See all 3,455 papers →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.