Abstract
A field experiment on effect of tillage and weed management on weed dynamics and yield of rice in rice-wheat-greengram cropping system in vertisols of central India was conducted during Kharif 2014 to 2015 at ICAR-DWR, Jabalpur. The experiment consisted of total 15 treatments. A split plot design having three replications was used with five tillage practices in main plots and three weed control treatments in subplots. The maximum weed density and biomass were found when zero tillage was done in rice in the presence of Sesbania (S) and greengram residues (ZT+S+GG); under zero tillage in rice in the presence of Sesbania and green gram residues-zero tillage in wheat in the presence of rice residues-zero tillage in greengram in the presence of wheat residues system [ZT+S+GG(R)-ZT+RR(W)-ZT+WR(GG)] followed by zero tillage done in rice in the presence of only Sesbania residues (ZT+S) under ZT+S(R)-ZT(W)-ZT(GG) system. Whereas the minimum was recorded when conventional tillage was done in transplanted rice under CT(TPR)-CT(W)- fallow system which also recorded higher grain and straw yields as well as gross monetary returns but had higher cost of cultivation followed by (ZT+S) under ZT+S(R)-ZT(W)-ZT(GG) system. This system also has the maximum net monetary returns and B:C along with the reduced cost of cultivation. Rotational application of chlorimuron + metsulfuron-methyl 4 g /ha during previous year and post-emergence application (PoE) of bispyribac-sodium 25 g/ha during next year in rice as well as regular application of bispyribac-sodium 25 g/ha PoE in rice during both the years gave similar weed control and recorded the higher crop yield, net monetary returns and B:C. Among different treatment combinations, rotational application of chlorimuron + metsulfuron-methyl 4 g/ha PoE during previous year and bispyribac-sodium 25 g/ha PoE during next year after conventional tillage in transplanted rice under CT(TPR)-CT(W)-fallow system and ZT+S in rice under ZT+S(R)-ZT(W)-ZT(GG) system has resulted lower weed density and biomass along with higher weed control efficiency, higher grain and straw yields and economic returns than other combinations.
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Claims 10
Claim · model-written summary
The ZT+S+GG rice system had maximum weed density and biomass.
- Taxon
- rice
Oryza sativae0 - Treatment
- zero tillagee0
- Interactor
- weede0weed
- Outcome
- weed density and biomasse0
- Direction
- maximume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The maximum weed density and biomass were found when zero tillage was done in rice in the presence of Sesbania (S) and greengram residues (ZT+S+GG)”
Claim · model-written summary
Conventional tillage in transplanted rice produced minimum weed density and biomass.
- Taxon
- riceOryza sativae0
- Treatment
- conventional tillagee0
- Outcome
- minimume0
- Direction
- minimume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the minimum was recorded when conventional tillage was done in transplanted rice under CT(TPR)-CT(W)- fallow system”
Claim · model-written summary
The conventional tillage transplanted rice system recorded higher grain and straw yields and gross monetary returns.
- Treatment
- CT(TPR)-CT(W)- fallow systeme0
- Outcome
- grain and straw yields as well as gross monetary returnse0
- Direction
- highere0
Not reportedTaxon
Verbatim
e0“CT(TPR)-CT(W)- fallow system which also recorded higher grain and straw yields as well as gross monetary returns”
Claim · model-written summary
The conventional tillage transplanted rice system had a higher cultivation cost.
Not reportedTaxon
Verbatim
e0“CT(TPR)-CT(W)- fallow system which also recorded higher grain and straw yields as well as gross monetary returns but had higher cost of cultivation”
Claim · model-written summary
The ZT+S system had maximum net monetary returns and benefit to cost ratio with reduced cultivation cost.
Not reportedTaxon
Verbatim
e0“This system also has the maximum net monetary returns and B:C along with the reduced cost of cultivation.”
Claim · model-written summary
Rotational and regular bispyribac-sodium herbicide schedules gave similar weed control.
- Taxon
- riceOryza sativae0
- Treatment
- Rotational application of chlorimuron + metsulfuron-methyl 4 g /ha during previous year and post-emergence application (PoE) of bispyribac-sodium 25 g/ha during next yeare0
- Interactor
- weede0weed
- Outcome
- weed controle0
- Direction
- similare0
- Comparator
- regular application of bispyribac-sodium 25 g/ha PoE in rice during both the yearse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rotational application of chlorimuron + metsulfuron-methyl 4 g /ha during previous year and post-emergence application (PoE) of bispyribac-sodium 25 g/ha during next year in rice as well as regular application of bispyribac-sodium 25 g/ha PoE in rice during both the years gave similar weed control”
Claim · model-written summary
The two herbicide schedules recorded higher crop yield, net monetary returns, and benefit to cost ratio.
Not reportedTaxon
Verbatim
e0“gave similar weed control and recorded the higher crop yield, net monetary returns and B:C.”
Claim · model-written summary
Rotational herbicide application in the named tillage systems produced lower weed density and biomass than other combinations.
- Taxon
- riceOryza sativae0
- Treatment
- rotational application of chlorimuron + metsulfuron-methyl 4 g/ha PoE during previous year and bispyribac-sodium 25 g/ha PoE during next yeare0
- Interactor
- weede0weed
- Outcome
- weed density and biomasse0
- Direction
- lowere0
- Comparator
- other combinationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rotational application of chlorimuron + metsulfuron-methyl 4 g/ha PoE during previous year and bispyribac-sodium 25 g/ha PoE during next year after conventional tillage in transplanted rice under CT(TPR)-CT(W)-fallow system and ZT+S in rice under ZT+S(R)-ZT(W)-ZT(GG) system has resulted lower weed density and biomass along with higher weed control efficiency, higher grain and straw yields and economic returns than other combinations.”
Claim · model-written summary
Rotational herbicide application in the named tillage systems produced higher weed control efficiency than other combinations.
- Taxon
- riceOryza sativae0
- Treatment
- rotational application of chlorimuron + metsulfuron-methyl 4 g/ha PoE during previous year and bispyribac-sodium 25 g/ha PoE during next yeare0
- Outcome
- weed control efficiencye0
- Direction
- highere0
- Comparator
- other combinationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rotational application of chlorimuron + metsulfuron-methyl 4 g/ha PoE during previous year and bispyribac-sodium 25 g/ha PoE during next year after conventional tillage in transplanted rice under CT(TPR)-CT(W)-fallow system and ZT+S in rice under ZT+S(R)-ZT(W)-ZT(GG) system has resulted lower weed density and biomass along with higher weed control efficiency, higher grain and straw yields and economic returns than other combinations.”
Claim · model-written summary
Rotational herbicide application in the named tillage systems produced higher grain and straw yields and economic returns than other combinations.
- Taxon
- riceOryza sativae0
- Treatment
- rotational application of chlorimuron + metsulfuron-methyl 4 g/ha PoE during previous year and bispyribac-sodium 25 g/ha PoE during next yeare0
- Outcome
- grain and straw yields and economic returnse0
- Direction
- highere0
- Comparator
- other combinationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rotational application of chlorimuron + metsulfuron-methyl 4 g/ha PoE during previous year and bispyribac-sodium 25 g/ha PoE during next year after conventional tillage in transplanted rice under CT(TPR)-CT(W)-fallow system and ZT+S in rice under ZT+S(R)-ZT(W)-ZT(GG) system has resulted lower weed density and biomass along with higher weed control efficiency, higher grain and straw yields and economic returns than other combinations.”
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See all 603 papers →8 of 10 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.