Abstract
Dry-seeded rice production systems are increasing in many Asian countries because of labor and water scarcities. However, weeds are the main biological constraints in these systems. Herbicides are widely used to manage weeds but they do not provide effective weed control. The use of crop residue as mulch can suppress weed emergence and weed biomass but mulch alone does not provide effective weed control. The integrated use of herbicide and mulch, however, could provide more effective and sustainable weed control in dry-seeded rice systems. A study was conducted in two consecutive rice growing seasons to evaluate the combined effect of herbicide (treated and nontreated) and rice straw mulch (0, 2, and 4 t.ha-1) on weed growth and rice yield in a dry-seeded rice system. In the nontreated plots, weed biomass decreased with increases in mulch amounts, whereas weed biomass in the herbicide-treated plots was similar at different mulch amounts. Overall, herbicide treatments provided better weed control than the mulch treatments. In the nontreated plots, grain yield was similar at different mulch amounts, whereas grain yield in the herbicide-treated plots was greater when the field was mulched with 4 t.ha-1 of rice straw than with no mulch or mulched with only 2 t.ha-1 of rice straw. The results suggest that integrated use of mulch and herbicides can help weed control and increase crop yield in dry-seeded rice.
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Claims 6
Claim · model-written summary
Without herbicide, weed biomass decreased as mulch amounts increased.
- Taxon
- Rice
Oryza sativat0 - Treatment
- mulch amountse0
- Interactor
- weede0weed
- Outcome
- weed biomasse0
- Direction
- decreasede0
- Comparator
- nontreated plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the nontreated plots, weed biomass decreased with increases in mulch amounts”
t0“Rice”
Claim · model-written summary
With herbicide, weed biomass was similar across mulch amounts.
- Taxon
- RiceOryza sativat0
- Treatment
- herbicide-treatede0
- Interactor
- weede0weed
- Outcome
- weed biomasse0
- Direction
- similare0
- Comparator
- different mulch amountse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“weed biomass in the herbicide-treated plots was similar at different mulch amounts”
t0“Rice”
Claim · model-written summary
Herbicide provided better weed control than mulch.
- Taxon
- RiceOryza sativat0
- Treatment
- herbicide treatmentse0
- Interactor
- weede0weed
- Outcome
- weed controle0
- Direction
- bettere0
- Comparator
- mulch treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“herbicide treatments provided better weed control than the mulch treatments”
t0“Rice”
Claim · model-written summary
Without herbicide, grain yield was similar at different mulch amounts.
- Taxon
- RiceOryza sativat0
- Treatment
- mulch amountse0
- Outcome
- grain yielde0
- Direction
- similare0
- Comparator
- different mulch amountse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the nontreated plots, grain yield was similar at different mulch amounts”
t0“Rice”
Claim · model-written summary
With herbicide, 4 t.ha-1 rice straw mulch produced greater grain yield than zero or 2 t.ha-1 mulch.
- Taxon
- RiceOryza sativat0
- Treatment
- mulched with 4 t.ha-1 of rice strawe0
- Outcome
- grain yielde0
- Direction
- greatere0
- Comparator
- no mulch or mulched with only 2 t.ha-1 of rice strawe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“grain yield in the herbicide-treated plots was greater when the field was mulched with 4 t.ha-1 of rice straw than with no mulch or mulched with only 2 t.ha-1 of rice straw”
t0“Rice”
Claim · model-written summary
The authors recommend combining mulch and herbicides for weed control and crop yield.
- Taxon
- riceOryza sativae0
- Outcome
- integrated use of mulch and herbicidese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“integrated use of mulch and herbicides can help weed control and increase crop yield in dry-seeded rice”
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