Abstract
The field experiment was conducted at Agronomy Research Farm of Narendra Deva University of Agriculture and Technology, Kumarganj, Faizabad (U.P.) during Kharif season of 2015 and 2016. The experiment was laid out in split-plot design with three replications taking four establishment methods viz., Dry Seeding, Seeding through Drum Seeder (Wet) and Broadcasting (Wet) under puddled condition in main plot, and eight weed management practices viz. Bispyribac-Na @ 25g/ha at 25DAS (3-4 Leaf stage of rice crop), Pendimethaline @100g/ha at 0-2DAS fbBispyribac-Na@25g/ha at 25DAS (3-4 Leaf stage of rice crop), Oxadiargyl @100g/ha 0-2DASfb Bispyribac-Na@25g/ha at 25DAS (3-4 Leaf stage of rice crop), Pretilachlore @ 750g/ha at 0-2DASfbAlmix @ 4 g/ha at 25DAS (3-4 Leaf stage of rice crop), Pyrazosulfuran @ 20 g/ha at 0-2DAS fb ethoxysulfuran @18.75 g/ha at 25DAS (3-4 Leaf stage of rice crop), Manual Weeding (20,40,60 DAS),Weed free and weedy check were kept in sub-plot. The observations were recorded on weeds and on crop at successive stages of crop growth during both the years. The major weed flora recorded in the experiment were E. crusgalli E. colona and P. maximum of grassy, Commelina benghalensis L. and Eclipta alba of broad leaved group and Cyperus spp. of Sedges group. However, grassy weeds were dominant over other weeds species. Lower values of weed density and dry weight, N uptake and higher values of growth attributes, N uptake by crop, yield and yield attributes were recorded significantly due to manual weeding thrice, and Pretilachlore @ 750g/ha at 0-2DASfbAlmix @ 4 g/ha at 25DAS (3-4 Leaf stage of rice crop)being at par at all characters during both the years. However, weedy check treatment recorded significantly lower values of the entire growth characters yield and yields attributes at all the stages over rest of the weed control treatments. Both of the DSR (wet) drum seeding and broadcasting being at par recorded significantly lower values of weed density, weed dry weight and higher values of growth and yield attributes, grain and straw yield over dry seeding methods during both the years. On the basis of two years experimentation, it may be concluded that higher values of grain yield and net return may be obtained due drum seeding methods of establishment of rice along with integrated method of using weed management by Pretilachlore @ 750g/ha at 0-2DASfbAlmix @ 4 g/ha at 25DAS (3-4 Leaf stage of rice crop), while, broadcasting (wet) showed the same response However, direct seeding of rice through drum along with Pretilachlore @ 750g/ha at 0-2DASfbAlmix @ 4 g/ha at 25DAS (3-4 Leaf stage of rice crop) proved superior (BCR values of Rs 2.12 per ha) over other methods of rice establishment under puddled condition.
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Claims 11
Claim · model-written summary
Manual weeding thrice lowered weed density and weed dry weight in direct seeded rice.
- Taxon
- Oryza sativa L.
Oryza sativat0 - Treatment
- manual weeding thricee1
- Outcome
- weed density and dry weighte1
- Direction
- Lower valuese1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Direct Seeded Rice (Oryza sativa L.)”
e1“Lower values of weed density and dry weight, N uptake and higher values of growth attributes, N uptake by crop, yield and yield attributes were recorded significantly due to manual weeding thrice”
Claim · model-written summary
Manual weeding thrice increased growth attributes of direct seeded rice.
- Taxon
- Oryza sativa L.Oryza sativat0
- Treatment
- manual weeding thricee1
- Outcome
- growth attributese1
- Direction
- higher valuese1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Direct Seeded Rice (Oryza sativa L.)”
e1“Lower values of weed density and dry weight, N uptake and higher values of growth attributes, N uptake by crop, yield and yield attributes were recorded significantly due to manual weeding thrice”
Claim · model-written summary
Manual weeding thrice increased yield and yield attributes of direct seeded rice.
- Taxon
- Oryza sativa L.Oryza sativat0
- Treatment
- manual weeding thricee1
- Outcome
- yield and yield attributese1
- Direction
- higher valuese1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Direct Seeded Rice (Oryza sativa L.)”
e1“Lower values of weed density and dry weight, N uptake and higher values of growth attributes, N uptake by crop, yield and yield attributes were recorded significantly due to manual weeding thrice”
Claim · model-written summary
Manual weeding thrice increased N uptake by the crop.
- Taxon
- Oryza sativa L.Oryza sativat0
- Treatment
- manual weeding thricee1
- Outcome
- N uptake by crope1
- Direction
- higher valuese1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Direct Seeded Rice (Oryza sativa L.)”
e1“Lower values of weed density and dry weight, N uptake and higher values of growth attributes, N uptake by crop, yield and yield attributes were recorded significantly due to manual weeding thrice”
Claim · model-written summary
Pretilachlore followed by Almix was at par with manual weeding thrice for all characters.
- Taxon
- Oryza sativa L.Oryza sativat0
- Treatment
- Pretilachlore @ 750g/ha at 0-2DASfbAlmix @ 4 g/ha at 25DASe2
- Outcome
- all characterse2
- Direction
- at pare2
- Comparator
- manual weeding thricee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Direct Seeded Rice (Oryza sativa L.)”
e1“Lower values of weed density and dry weight, N uptake and higher values of growth attributes, N uptake by crop, yield and yield attributes were recorded significantly due to manual weeding thrice”
e2“Pretilachlore @ 750g/ha at 0-2DASfbAlmix @ 4 g/ha at 25DAS (3-4 Leaf stage of rice crop)being at par at all characters during both the years”
Claim · model-written summary
The weedy check gave significantly lower growth characters, yield and yield attributes than the other weed control treatments.
- Taxon
- Oryza sativa L.Oryza sativat0
- Treatment
- weedy checke3
- Outcome
- the entire growth characterse3
- Direction
- lower valuese3
- Comparator
- rest of the weed control treatmentse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Direct Seeded Rice (Oryza sativa L.)”
e3“weedy check treatment recorded significantly lower values of the entire growth characters yield and yields attributes at all the stages over rest of the weed control treatments”
Claim · model-written summary
Wet drum seeding and broadcasting lowered weed density and weed dry weight relative to dry seeding.
- Taxon
- Oryza sativa L.Oryza sativat0
- Treatment
- DSR (wet) drum seeding and broadcastinge4
- Outcome
- weed density, weed dry weighte4
- Direction
- lower valuese4
- Comparator
- dry seeding methodse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Direct Seeded Rice (Oryza sativa L.)”
e4“Both of the DSR (wet) drum seeding and broadcasting being at par recorded significantly lower values of weed density, weed dry weight and higher values of growth and yield attributes, grain and straw yield over dry seeding methods during both the years”
Claim · model-written summary
Wet drum seeding and broadcasting increased growth and yield attributes relative to dry seeding.
- Taxon
- Oryza sativa L.Oryza sativat0
- Treatment
- DSR (wet) drum seeding and broadcastinge4
- Outcome
- growth and yield attributese4
- Direction
- higher valuese4
- Comparator
- dry seeding methodse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Direct Seeded Rice (Oryza sativa L.)”
e4“Both of the DSR (wet) drum seeding and broadcasting being at par recorded significantly lower values of weed density, weed dry weight and higher values of growth and yield attributes, grain and straw yield over dry seeding methods during both the years”
Claim · model-written summary
Wet drum seeding and broadcasting increased grain and straw yield relative to dry seeding.
- Taxon
- Oryza sativa L.Oryza sativat0
- Treatment
- DSR (wet) drum seeding and broadcastinge4
- Outcome
- grain and straw yielde4
- Direction
- higher valuese4
- Comparator
- dry seeding methodse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Direct Seeded Rice (Oryza sativa L.)”
e4“Both of the DSR (wet) drum seeding and broadcasting being at par recorded significantly lower values of weed density, weed dry weight and higher values of growth and yield attributes, grain and straw yield over dry seeding methods during both the years”
Claim · model-written summary
Drum seeding methods of establishment of rice may give higher grain yield and net return.
- Taxon
- Oryza sativa L.Oryza sativat0
- Treatment
- drum seeding methods of establishment of ricee5
- Outcome
- grain yield and net returne5
- Direction
- higher valuese5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Direct Seeded Rice (Oryza sativa L.)”
e5“higher values of grain yield and net return may be obtained due drum seeding methods of establishment of rice”
Claim · model-written summary
Direct seeding through drum with Pretilachlore followed by Almix had a benefit-cost ratio of Rs 2.12 per ha, superior to other establishment methods.
- Taxon
- Oryza sativa L.Oryza sativat0
- Treatment
- direct seeding of rice through drume6
- Outcome
- BCRe6
- Direction
- superiore6
- Value
- Rs 2.12 per hae6
- Comparator
- other methods of rice establishmente6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Direct Seeded Rice (Oryza sativa L.)”
e6“direct seeding of rice through drum along with Pretilachlore @ 750g/ha at 0-2DASfbAlmix @ 4 g/ha at 25DAS (3-4 Leaf stage of rice crop) proved superior (BCR values of Rs 2.12 per ha) over other methods of rice establishment under puddled condition”
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