Abstract
A field experiment was conducted at Coimbatore during 2000-2001 and 2001-2002 to study the effect of seeding methods (surface and anaerobic), in-situ incorporation of dhaincha (Sesbania aculeata) and time of pretilachlor-plus application on productivity and profitability of wet-seeded rice (Oryza sativa L.). Treatments in- cluded two seeding methods, viz. surface wet seeding and anaerobic seeding, with two intercropping levels, viz. sole rice and rice + dhaincha; and four weed-control treatments, viz. pretilachlor-plus @ 0.30 kg/ha 2 days after sowing (DAS) followed by (fb) 1 hand-weeding (HW) at 45 DAS, pretilachlor-plus @ 0.30 kg/ha 5 DAS fb 1 hand- weeding at 45 DAS, hand-weeding twice at 20 and 45 DAS, and unweeded check. Surface and anaerobic drill seeding were comparable in terms of weed density, growth and productivity of rice. Conjoint cropping of rice + dhaincha and incorporation of the latter at 37 DAS using con0 weeder proved better in terms of reducing the total weed density, increasing the crop growth, productivity (5.1 tlha) and weed-smothering efficiency (25.5%) of wet- seeded rice. Pre-emergence application of pretilachlor-plus @ 0.30 kg/ha on 2 DAS + hand-weeding at 45 DAS registered lower total weed density (53.6/m2) and higher weed-control efficiency, as well as markedly improved the growth and yield parameters and grain yield (5.6 ttha). Anaerobic seeding, rice + dhaincha and pretilachlor-plus at 2 DAS gave better profit (Rs 13,892lha). It was concluded that anaerobic seeding, dual cultivation of rice + dhaincha and pretilachlor plus @ 0.30 kg /ha on 2 DAS + hand-weeding at 45 DAS is an efficient method for im- proving weed control, productivity and profitability of wet-seeded rice.
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Claims 11
Claim · model-written summary
Surface and anaerobic seeding were comparable for weed density, rice growth and productivity.
- Taxon
- rice
Oryza sativae0 - Treatment
- Surfacee0
- Outcome
- weed density, growth and productivity of ricee0
- Direction
- comparablee0
- Comparator
- anaerobic drill seedinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Surface and anaerobic drill seeding were comparable in terms of weed density, growth and productivity of rice”
Claim · model-written summary
Rice with incorporated dhaincha reduced total weed density.
- Taxon
- riceOryza sativae0
- Treatment
- Conjoint cropping of rice + dhaincha and incorporation of the latter at 37 DASe0
- Interactor
- dhainchae0weed
- Outcome
- total weed densitye0
- Direction
- reducinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Conjoint cropping of rice + dhaincha and incorporation of the latter at 37 DAS using con0 weeder proved better in terms of reducing the total weed density”
Claim · model-written summary
Rice with incorporated dhaincha increased crop growth.
- Taxon
- riceOryza sativae0
- Treatment
- Conjoint cropping of rice + dhaincha and incorporation of the latter at 37 DASe0
- Outcome
- crop growthe0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Conjoint cropping of rice + dhaincha and incorporation of the latter at 37 DAS using con0 weeder proved better in terms of reducing the total weed density, increasing the crop growth”
Claim · model-written summary
Rice with incorporated dhaincha increased productivity to 5.1 tlha.
Not reportedTaxonTreatmentComparator
Verbatim
e0“increasing the crop growth, productivity (5.1 tlha) and weed-smothering efficiency (25.5%)”
Claim · model-written summary
Rice with incorporated dhaincha raised weed-smothering efficiency to 25.5%.
Not reportedTaxonTreatmentComparatorDirection
Verbatim
e0“productivity (5.1 tlha) and weed-smothering efficiency (25.5%)”
Claim · model-written summary
Pretilachlor plus hand-weeding reduced weed density to 53.6/m2.
- Treatment
- pretilachlor-plus @ 0.30 kg/ha on 2 DAS + hand-weeding at 45 DASe0
- Outcome
- total weed densitye0
- Direction
- lowere0
- Value
- 53.6/m2e0
Not reportedTaxonComparator
Verbatim
e0“Pre-emergence application of pretilachlor-plus @ 0.30 kg/ha on 2 DAS + hand-weeding at 45 DAS registered lower total weed density (53.6/m2)”
Claim · model-written summary
Pretilachlor plus hand-weeding increased weed-control efficiency.
Not reportedTaxonTreatmentComparator
Verbatim
e0“higher weed-control efficiency”
Claim · model-written summary
Pretilachlor plus hand-weeding improved rice growth and yield parameters.
Not reportedTaxonTreatmentComparator
Verbatim
e0“markedly improved the growth and yield parameters”
Claim · model-written summary
Pretilachlor plus hand-weeding gave grain yield of 5.6 ttha.
Not reportedTaxonTreatmentComparatorDirection
Verbatim
e0“grain yield (5.6 ttha)”
Claim · model-written summary
Anaerobic seeding, rice plus dhaincha and early pretilachlor improved profit to Rs 13,892lha.
- Taxon
- riceOryza sativae0
- Treatment
- Anaerobic seeding, rice + dhaincha and pretilachlor-plus at 2 DASe0
- Outcome
- profite0
- Direction
- bettere0
- Value
- Rs 13,892lhae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Anaerobic seeding, rice + dhaincha and pretilachlor-plus at 2 DAS gave better profit (Rs 13,892lha)”
Claim · model-written summary
The authors recommend anaerobic seeding, rice-dhaincha cultivation and early pretilachlor with hand-weeding.
- Taxon
- riceOryza sativae0
- Outcome
- efficient method for im- proving weed control, productivity and profitability of wet-seeded ricee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“anaerobic seeding, dual cultivation of rice + dhaincha and pretilachlor plus @ 0.30 kg /ha on 2 DAS + hand-weeding at 45 DAS is an efficient method for im- proving weed control, productivity and profitability of wet-seeded rice”
The same questions in other papers
herbicide · weed · Oryza sativa (rice)Positive and negative results
578 papers in the same direction as this paper · 17 in the opposite direction · 7 reporting no difference from an alternative
- positive
- negative
- no effect
599 papers more in this group
See all 603 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.