Abstract
A field experiment was conducted at Varanasi during 2005–06 and 2006–07 to find out the most sustainable and economically feasible weed management technologies for realizing high yield of direct seeded rice (Oryza sativa L.)-zero till wheat (Triticum aestivum L. emend. Fiori & Paol.) system. The treatments comprised five different weed management practices for rice (anilophos 500 g/ha, wheat straw mulch 2 t/ha, eucalyptus leaf leachate spray 3% at 30 days after sowing (DAS), stale seed bed and weedy check) and wheat (mechanical weeding at 15 and 30 DAS, rice straw mulch 2 t/ha, neem oil spray 3% at 30 DAS, sulfosulfuron 25 g/ha at 30 DAS and weedy check) under same rates of seed (75, 100, 125 and 150 kg seeds/ha). In rice crop, the seed rate of 100 kg/ha caused the highest decrease in weed dry matter accumulation and led significantly higher rice yield and NPK uptake over other seed rates. Application of anilophos at 500 g/ha recorded significantly lower dry matter accumulation of weeds, and in turn increased rice yield and NPK uptake than the other weed management practices. This treatment gave 45.4% increase in rice grain yield over weedy check. In case of wheat grown after rice, 125 kg seed/ha reduced dry matter accumulation of weeds, and resulted in the highest wheat yield and NPK uptake which was similar to 100 kg seed/ha, but was significantly superior to 75 and 150 kg seeds/ha. Mechanical weeding done twice at 15 and 30 days stage was found most effective in reducing weed dry matter accumulation, and maximizing wheat yield and NPK uptake which was at par with sulfosulfuron 25 g/ha at 30 DAS. Mechanical weeding at 15 and 30 DAS registered 31.4% increase in wheat grain yield over weedy check. Net return and benefit: cost ratio in rice-wheat system were the highest (Rs. 41347/ha and 2.66) with 100 kg seed/ha to both the crops and in weed management treatments, maximum net return and benefit: cost ratio Rs.13310/ha and 0.87 were recorded with anilophos 500 g/ha in rice, and Rs.29922/ha and 1.82 with sulfosulfuron 25 g/ha in wheat. For realizing higher yield, economic gain and effective weed management in direct seeded rice and zero-till wheat system, 100 kg seed/ha of rice and wheat should be applied with anilophos at 500 g/ha to rice crop and 125 kg seed/ha alongwith sulfosulfuron 25 g/ha at 30 DAS to the succeeding wheat crop.
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Claims 12
Claim · model-written summary
Rice seed rate of 100 kg/ha most reduced weed dry matter.
- Taxon
- rice
Oryza sativae0 - Treatment
- 100 kg/hae0
- Outcome
- weed dry matter accumulatione0
- Direction
- highest decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In rice crop, the seed rate of 100 kg/ha caused the highest decrease in weed dry matter accumulation”
Claim · model-written summary
Rice seed rate of 100 kg/ha increased yield.
- Taxon
- riceOryza sativae0
- Treatment
- 100 kg/hae0
- Outcome
- rice yielde0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seed rate of 100 kg/ha caused the highest decrease in weed dry matter accumulation and led significantly higher rice yield”
Claim · model-written summary
Rice seed rate of 100 kg/ha increased NPK uptake.
- Taxon
- riceOryza sativae0
- Treatment
- 100 kg/hae0
- Outcome
- NPK uptakee0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seed rate of 100 kg/ha caused the highest decrease in weed dry matter accumulation and led significantly higher rice yield and NPK uptake”
Claim · model-written summary
Anilophos reduced weed dry matter.
- Taxon
- riceOryza sativae1
- Treatment
- anilophos at 500 g/hae0
- Outcome
- dry matter accumulation of weedse0
- Direction
- lowere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of anilophos at 500 g/ha recorded significantly lower dry matter accumulation of weeds”
e1“rice-wheat system”
Claim · model-written summary
Anilophos increased rice yield by 45.4% over weedy check.
- Taxon
- riceOryza sativae0
- Treatment
- This treatmente0
- Outcome
- rice grain yielde0
- Direction
- increasee0
- Value
- 45.4%e0
- Comparator
- weedy checke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This treatment gave 45.4% increase in rice grain yield over weedy check.”
Claim · model-written summary
Wheat seed rate of 125 kg/ha reduced weed dry matter.
- Taxon
- wheat
Triticum aestivume1 - Treatment
- 125 kg seed/hae0
- Outcome
- dry matter accumulation of weedse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“125 kg seed/ha reduced dry matter accumulation of weeds”
e1“rice-wheat system”
Claim · model-written summary
Wheat seed rate of 125 kg/ha produced the highest wheat yield.
- Taxon
- wheatTriticum aestivume0
- Treatment
- 125 kg seed/hae0
- Outcome
- wheat yielde0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“125 kg seed/ha reduced dry matter accumulation of weeds, and resulted in the highest wheat yield”
Claim · model-written summary
Wheat seed rate of 125 kg/ha produced highest NPK uptake.
- Taxon
- wheatTriticum aestivume0
- Treatment
- 125 kg seed/hae0
- Outcome
- NPK uptakee0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“125 kg seed/ha reduced dry matter accumulation of weeds, and resulted in the highest wheat yield and NPK uptake”
Claim · model-written summary
Mechanical weeding most reduced weed dry matter.
- Taxon
- wheatTriticum aestivume1
- Treatment
- Mechanical weeding done twice at 15 and 30 days stagee0
- Outcome
- weed dry matter accumulatione0
- Direction
- reducinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mechanical weeding done twice at 15 and 30 days stage was found most effective in reducing weed dry matter accumulation”
e1“rice-wheat system”
Claim · model-written summary
Mechanical weeding increased wheat grain yield by 31.4%.
- Taxon
- wheatTriticum aestivume0
- Treatment
- Mechanical weeding at 15 and 30 DASe0
- Outcome
- wheat grain yielde0
- Direction
- increasee0
- Value
- 31.4%e0
- Comparator
- weedy checke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mechanical weeding at 15 and 30 DAS registered 31.4% increase in wheat grain yield over weedy check.”
Claim · model-written summary
The authors recommend rice at 100 kg seed/ha with anilophos 500 g/ha.
- Taxon
- riceOryza sativae0
- Outcome
- 100 kg seed/ha of rice and wheat should be applied with anilophos at 500 g/ha to rice crope0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“100 kg seed/ha of rice and wheat should be applied with anilophos at 500 g/ha to rice crop”
Claim · model-written summary
The authors recommend wheat at 125 kg seed/ha with sulfosulfuron 25 g/ha.
- Taxon
- wheatTriticum aestivume0
- Outcome
- 125 kg seed/ha alongwith sulfosulfuron 25 g/ha at 30 DASe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“125 kg seed/ha alongwith sulfosulfuron 25 g/ha at 30 DAS to the succeeding wheat crop”
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465 papers in the same direction as this paper · 87 in the opposite direction · 10 reporting no difference from an alternative
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See all 563 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.