Abstract
Field experiments were conducted to study the cost effective weed management practices in direct seeded rice at Regional Research Station, Tamil Nadu Agricultural University, Paiyur 635 112, Tamil Nadu, India in wet and dry seasons of 2015 and 2016 respectively in randomized block design with four replications. The treatments are pre- emergence application of Pendimethalin @ 1.0 kg ai ha-1 at 8 DAS followed by hand weeding at 25 DAS (T1 ), pre- emergence application of Pendimethalin @ 1.0 kg ai ha-1 at 8 DAS followed by post emergence application of Bispyribac sodium 25 g ha-1 at 25 DAS+ hand weeding at 45 DAS (T2 ) and Cono weeder weeding at 10 and 25 DAS (T3 ), Hand weeding on 15 and 30 DAS (T4 ) and Control - Weedy check (T5 ). The results revealed that, among the different weed control treatments, application of pre-emergence herbicide pendimethalin 1.0 kg ai ha-1 at 8 DAS with POE Bispyribac sodium 25g ha-1 at 25 DAS and HW on 45 DAS (T2 ) recorded higher grain yield of 6438 kg ha-1 with the B:C ratio of 2.77. With respect to weed control efficiency, application of pre-emergence herbicide pendimethalin 1.0 kg ai ha-1 at 8 DAS with POE Bispyribac sodium 25g ha-1 at 25 DAS and HW on 45 DAS (T2 ) recorded higher weed control efficiency of 81.0 % as compared with Cono weeder weeding at 10 and 25 DAS. Hence, it was concluded that considering the weed control efficiency, yield and economics, pre-emergence application of pendimethalin 1.0 kg ai ha-1 at 8 DAS with POE Bispyribac sodium 25g ha-1 at 25 DAS and HW on 45 DAS is recommended for weed management in direct seeded puddled rice to meet the challenges against labour scarcity and weed infestation in the field of small and marginal farmers.
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Claims 4
Claim · model-written summary
The combined herbicide and hand weeding treatment recorded higher rice grain yield of 6438 kg ha-1.
- Taxon
- rice
Oryza sativat0 - Treatment
- application of pre-emergence herbicide pendimethalin 1.0 kg ai ha-1 at 8 DAS with POE Bispyribac sodium 25g ha-1 at 25 DAS and HW on 45 DASe0
- Outcome
- grain yielde0
- Direction
- highere0
- Value
- 6438 kg ha-1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of pre-emergence herbicide pendimethalin 1.0 kg ai ha-1 at 8 DAS with POE Bispyribac sodium 25g ha-1 at 25 DAS and HW on 45 DAS (T2 ) recorded higher grain yield of 6438 kg ha-1 with the B:C ratio of 2.77”
t0“rice”
Claim · model-written summary
The combined treatment recorded a B:C ratio of 2.77.
- Taxon
- riceOryza sativat0
- Treatment
- application of pre-emergence herbicide pendimethalin 1.0 kg ai ha-1 at 8 DAS with POE Bispyribac sodium 25g ha-1 at 25 DAS and HW on 45 DASe0
- Outcome
- B:C ratioe0
- Value
- 2.77e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of pre-emergence herbicide pendimethalin 1.0 kg ai ha-1 at 8 DAS with POE Bispyribac sodium 25g ha-1 at 25 DAS and HW on 45 DAS (T2 ) recorded higher grain yield of 6438 kg ha-1 with the B:C ratio of 2.77”
t0“rice”
Claim · model-written summary
The combined treatment gave higher weed control efficiency of 81.0% than Cono weeder weeding.
- Taxon
- riceOryza sativat0
- Treatment
- application of pre-emergence herbicide pendimethalin 1.0 kg ai ha-1 at 8 DAS with POE Bispyribac sodium 25g ha-1 at 25 DAS and HW on 45 DASe0
- Outcome
- weed control efficiencye0
- Direction
- highere0
- Value
- 81.0 %e0
- Comparator
- Cono weeder weeding at 10 and 25 DASe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of pre-emergence herbicide pendimethalin 1.0 kg ai ha-1 at 8 DAS with POE Bispyribac sodium 25g ha-1 at 25 DAS and HW on 45 DAS (T2 ) recorded higher weed control efficiency of 81.0 % as compared with Cono weeder weeding at 10 and 25 DAS”
t0“rice”
Claim · model-written summary
The authors recommend the combined herbicide and hand weeding treatment for direct seeded puddled rice.
- Taxon
- riceOryza sativae0
- Treatment
- pre-emergence application of pendimethalin 1.0 kg ai ha-1 at 8 DAS with POE Bispyribac sodium 25g ha-1 at 25 DAS and HW on 45 DASe0
- Outcome
- weed managemente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pre-emergence application of pendimethalin 1.0 kg ai ha-1 at 8 DAS with POE Bispyribac sodium 25g ha-1 at 25 DAS and HW on 45 DAS is recommended for weed management in direct seeded puddled rice”
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