Abstract
A field experiment was conducted at farmers’ field in West Garo Hills district of Meghalaya, India during kharif 2010 and 2011 to study the root characteristics of rice under different establishment methods and integrated weed management practices. Results revealed that the length, volume and biomass of roots were higher in SRI method followed by ICM method than CRC system at physiological maturity stage during both the years of investigation. Hand weeding twice at 20 and 40 DAT followed by butachlor 50 EC@1.5 kg a.i.ha-1 at 3 DAT + mechanical weeding at 20 DAT recorded higher root parameters over unweeded control during both years of field study. Maximum grain yield of rice was recorded with SRI method of establishment followed by ICM. Among the weed management practices, hand weeding twice at 20 DAT and 40 DAT recorded significantly higher grain yield closely followed by butachlor 50EC@1.5 kg a.i. ha-1 at 3 DAT + one mechanical weeding at 20 DAT. The higher net profit and B:C ratio under SRI establishment method of wetland rice could be obtained with butachlor 50 EC@1.5 kg a.i. ha-1 at 3 DAT + mechanical weeding at 20 DAT followed by hand weeding twice at 20 and 40 DAT. In ICM higher grain yield was recorded with hand weeding twice at 20 and 40 DAT.
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Claims 7
Claim · model-written summary
SRI produced greater root length, volume and biomass than ICM, which exceeded CRC at physiological maturity.
- Taxon
- rice
Oryza sativat0 - Treatment
- SRI methode0
- Outcome
- length, volume and biomass of rootse0
- Direction
- highere0
- Qualifier
- physiological maturity stage during both the years of investigatione0
- Comparator
- CRC systeme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the length, volume and biomass of roots were higher in SRI method followed by ICM method than CRC system at physiological maturity stage during both the years of investigation”
t0“rice (Oryza sativa L.)”
Claim · model-written summary
Twice hand weeding increased root parameters over unweeded control.
- Taxon
- riceOryza sativat0
- Treatment
- Hand weeding twice at 20 and 40 DATe0
- Outcome
- root parameterse0
- Direction
- highere0
- Comparator
- unweeded controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Hand weeding twice at 20 and 40 DAT followed by butachlor 50 EC@1.5 kg a.i.ha-1 at 3 DAT + mechanical weeding at 20 DAT recorded higher root parameters over unweeded control during both years of field study”
t0“rice (Oryza sativa L.)”
Claim · model-written summary
Butachlor plus mechanical weeding increased root parameters over unweeded control.
- Taxon
- riceOryza sativat0
- Treatment
- butachlor 50 EC@1.5 kg a.i.ha-1 at 3 DAT + mechanical weeding at 20 DATe0
- Outcome
- root parameterse0
- Direction
- highere0
- Comparator
- unweeded controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“butachlor 50 EC@1.5 kg a.i.ha-1 at 3 DAT + mechanical weeding at 20 DAT recorded higher root parameters over unweeded control during both years of field study”
t0“rice (Oryza sativa L.)”
Claim · model-written summary
SRI yielded the most grain, followed by ICM.
- Taxon
- riceOryza sativae0
- Treatment
- SRI method of establishmente0
- Outcome
- grain yielde0
- Direction
- Maximume0
- Comparator
- ICMe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maximum grain yield of rice was recorded with SRI method of establishment followed by ICM”
Claim · model-written summary
Twice hand weeding gave significantly higher grain yield among weed management practices.
- Taxon
- riceOryza sativat0
- Treatment
- hand weeding twice at 20 DAT and 40 DATe0
- Outcome
- grain yielde0
- Direction
- highere0
- Comparator
- butachlor 50EC@1.5 kg a.i. ha-1 at 3 DAT + one mechanical weeding at 20 DATe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“hand weeding twice at 20 DAT and 40 DAT recorded significantly higher grain yield closely followed by butachlor 50EC@1.5 kg a.i. ha-1 at 3 DAT + one mechanical weeding at 20 DAT”
t0“rice (Oryza sativa L.)”
Claim · model-written summary
Under SRI, butachlor plus mechanical weeding yielded the highest net profit and benefit-cost ratio, followed by twice hand weeding.
- Taxon
- riceOryza sativae0
- Treatment
- butachlor 50 EC@1.5 kg a.i. ha-1 at 3 DAT + mechanical weeding at 20 DATe0
- Outcome
- net profit and B:C ratioe0
- Direction
- highere0
- Qualifier
- SRI establishment methode0
- Comparator
- hand weeding twice at 20 and 40 DATe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The higher net profit and B:C ratio under SRI establishment method of wetland rice could be obtained with butachlor 50 EC@1.5 kg a.i. ha-1 at 3 DAT + mechanical weeding at 20 DAT followed by hand weeding twice at 20 and 40 DAT”
Claim · model-written summary
Under ICM, twice hand weeding gave higher grain yield.
- Taxon
- riceOryza sativat0
- Treatment
- hand weeding twice at 20 and 40 DATe0
- Outcome
- grain yielde0
- Direction
- highere0
- Qualifier
- ICMe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In ICM higher grain yield was recorded with hand weeding twice at 20 and 40 DAT”
t0“rice (Oryza sativa L.)”
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