Abstract
Field experiments were conducted at Tamil Nadu Rice Research Institute, Aduthurai during Rabi season of 2011 and 2012 to find out the suitable early post-emergence herbicides to manage the emerged weeds and re-growth of paddy stubbles in rice fallow black gram. The treatments consisted of three levels (50, 75 and 100 g/ha) of early post- emergence herbicides viz., Imazethapyr 10% SL and Quizalofop ethyl 5% EC which were tested alone and in combination and also compared with farmers’ practice of no weeding. Results revealed that lesser weed density was obtained with application of imazethapyr + quizalofop ethyl, each at75g/ha in both the years. Application of quizalofop ethyl alone or in combination with imazethapyr at all the three levels recorded higher weed control efficiency (> 80%) over imazethapyr alone. Higher mean yield of 721 kg/ha was obtained with application of both herbicides each at 50 g/ha and it was comparable with all the quizalofop ethyl treatments as well as application of both herbicides at all the doses. Higher mean net return of Rs.25375/ha was registered with application of both herbicides, each at 50 g/ha. However, higher return per rupee invested (BC Ratio) was obtained under application of quizalofop ethyl alone at 50g/ha during both the years (3.43). Thus, based on the weed control efficiency, seed yield and returns, it could be concluded that application of quizalofop ethyl at 50g/ha on 20 DAS will be effective for controlling emerged grassy weeds and re-growth of paddy stubbles in rice fallow black gram.
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Claims 6
Claim · model-written summary
The combined herbicides at 75g/ha yielded the lowest weed density in both years.
- Taxon
- black gram
Vigna mungot0 - Treatment
- imazethapyr + quizalofop ethyl, each at75g/hae0
- Outcome
- weed densitye0
- Direction
- lessere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“lesser weed density was obtained with application of imazethapyr + quizalofop ethyl, each at75g/ha in both the years”
t0“black gram”
Claim · model-written summary
Quizalofop alone or combined with imazethapyr gave over 80% weed control efficiency.
- Taxon
- black gramVigna mungot0
- Treatment
- quizalofop ethyl alonee0
- Outcome
- weed control efficiencye0
- Direction
- highere0
- Value
- > 80%e0
- Comparator
- imazethapyr alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of quizalofop ethyl alone or in combination with imazethapyr at all the three levels recorded higher weed control efficiency (> 80%) over imazethapyr alone”
t0“black gram”
Claim · model-written summary
The two herbicides at 50 g/ha each gave mean yield of 721 kg/ha.
- Taxon
- black gramVigna mungot0
- Treatment
- both herbicides each at 50 g/hae0
- Outcome
- mean yielde0
- Direction
- Highere0
- Value
- 721 kg/hae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher mean yield of 721 kg/ha was obtained with application of both herbicides each at 50 g/ha”
t0“black gram”
Claim · model-written summary
The two herbicides at 50 g/ha each gave mean net return of Rs.25375/ha.
- Taxon
- black gramVigna mungot0
- Treatment
- both herbicides, each at 50 g/hae0
- Outcome
- mean net returne0
- Direction
- Highere0
- Value
- Rs.25375/hae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher mean net return of Rs.25375/ha was registered with application of both herbicides, each at 50 g/ha”
t0“black gram”
Claim · model-written summary
Quizalofop alone at 50g/ha produced the highest return per rupee invested, 3.43.
- Taxon
- black gramVigna mungot0
- Treatment
- quizalofop ethyl alone at 50g/hae0
- Outcome
- return per rupee invested (BC Ratio)e0
- Direction
- highere0
- Value
- 3.43e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“higher return per rupee invested (BC Ratio) was obtained under application of quizalofop ethyl alone at 50g/ha during both the years (3.43)”
t0“black gram”
Claim · model-written summary
The authors recommend quizalofop ethyl at 50g/ha on 20 DAS for grassy weeds and paddy stubble regrowth.
- Taxon
- black gramVigna mungoe0
- Outcome
- application of quizalofop ethyl at 50g/ha on 20 DASe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of quizalofop ethyl at 50g/ha on 20 DAS will be effective for controlling emerged grassy weeds and re-growth of paddy stubbles in rice fallow black gram”
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See all 95 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.