Abstract
Farmers' participatory field trials were conducted at Madhuban, and Taraori, the two participatory experimental sites/locations of the Cereal Systems Initiative for South Asia (CSISA), a collaborative project of IRRI and CIMMYT in Karnal district of Haryana, India, during Kharif (wet season) 2010 and 2011. This research aimed to evaluate preemergence (PRE) and postemergence (POST) herbicides for providing feasible and economically viable weed management options to farmers for predominant scented rice varieties. Treatments with pendimethalin PRE fb bispyribac-sodium þ azimsulfuron POST had lower weed biomass at 45 days after sowing (DAS). At Madhuban, highest grain yield of scented basmati rice (3.43 t ha �1 ) was recorded with the sequential application of pendimethalin PRE fb bispyribacsodium þ azimsulfuron POST. However, at Taraori, yields were similar with pendimethalin or oxadiargyl PRE fb bispyribac-sodium and/or azimsulfuron POST. Applying oxadiargyl by mixing with sand onto flooded field was less effective than spray applications in non-flooded field. The benefit-cost ratio of rice crop was higher with herbicide treatments at both sites as compared with the non-treated weed-free check except single PRE and POST applications and sequential application of oxadiargyl PRE fb oxadiargyl PRE. In a separate experiment conducted at Nagla and Taraori sites, scented rice cultivars' ('CSR 30
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Claims 5
Claim · model-written summary
The sequential pendimethalin, bispyribac-sodium and azimsulfuron treatment lowered weed biomass at 45 DAS.
- Taxon
- rice
Oryza sativae1 - Treatment
- pendimethalin PRE fb bispyribac-sodium þ azimsulfuron POSTe0
- Outcome
- weed biomasse0
- Direction
- lowere0
- Qualifier
- 45 days after sowinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatments with pendimethalin PRE fb bispyribac-sodium þ azimsulfuron POST had lower weed biomass at 45 days after sowing (DAS)”
e1“predominant scented rice varieties”
Claim · model-written summary
At Madhuban the sequential treatment gave the highest scented basmati rice grain yield, 3.43 t ha �1.
- Taxon
- scented basmati ricee0
- Treatment
- sequential application of pendimethalin PRE fb bispyribacsodium þ azimsulfuron POSTe0
- Outcome
- grain yielde0
- Direction
- higheste0
- Value
- 3.43 t ha �1e0
- Setting
- Madhubane0
Not reportedComparator
Verbatim
e0“At Madhuban, highest grain yield of scented basmati rice (3.43 t ha �1 ) was recorded with the sequential application of pendimethalin PRE fb bispyribacsodium þ azimsulfuron POST”
Claim · model-written summary
At Taraori, rice yields were similar under pendimethalin or oxadiargyl PRE followed by the stated POST herbicides.
- Taxon
- riceOryza sativae1
- Treatment
- pendimethalin or oxadiargyl PRE fb bispyribac-sodium and/or azimsulfuron POSTe0
- Outcome
- yieldse0
- Direction
- similare0
- Setting
- Taraorie0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at Taraori, yields were similar with pendimethalin or oxadiargyl PRE fb bispyribac-sodium and/or azimsulfuron POST”
e1“predominant scented rice varieties”
Claim · model-written summary
Sand-mixed oxadiargyl on flooded fields was less effective than spray application in non-flooded fields.
- Taxon
- riceOryza sativae1
- Treatment
- oxadiargyl by mixing with sand onto flooded fielde0
- Outcome
- less effectivee0
- Direction
- less effectivee0
- Comparator
- spray applications in non-flooded fielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Applying oxadiargyl by mixing with sand onto flooded field was less effective than spray applications in non-flooded field”
e1“predominant scented rice varieties”
Claim · model-written summary
Most herbicide treatments had a higher rice benefit-cost ratio than the non-treated weed-free check at both sites, except specified single and sequential applications.
- Taxon
- riceOryza sativae0
- Treatment
- herbicide treatmentse0
- Outcome
- benefit-cost ratioe0
- Direction
- highere0
- Qualifier
- except single PRE and POST applications and sequential application of oxadiargyl PRE fb oxadiargyl PREe0
- Comparator
- non-treated weed-free checke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The benefit-cost ratio of rice crop was higher with herbicide treatments at both sites as compared with the non-treated weed-free check except single PRE and POST applications and sequential application of oxadiargyl PRE fb oxadiargyl PRE”
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