Abstract
A field experiment was carried out during winter (Rabi) seasons of 2012–13 and 2013–14 at research farm of Uttar Banga Krishi Viswavidyalaya, Pundibari, Cooch Behar, West Bengal with the objectives to study the weed control practices in no-tilled dibbling maize within rice residues. The experiment consisted of eight treatments, comprising of varying doses of 2,4-D (post-emergence treatment), atrazine with sequential application as pre-emergence and post-emergence treatment, pendimethalin followed by atrazine, weedy check and complete weed-free treatments, laid out in randomised block design (RBD) with four replications. Highest weed control efficiency and lowest weed index values were registered by atrazine 1.0 kg/ha as pre-emergence + atrazine 1.1 kg/ha as post-emergence. The dominant weed flora were the broad-leaved weeds Polygonum persicaria, P. pensylvanicum, P. orientale, and the grasses Digitaria ciliaris, Setaria glauca. Among the weed control practices, season long weed free condition recorded the highest grain/kernel yield of maize (9.52 and 10.6 t/ha) during both the years, which was statistically at par with atrazine 1.0 kg/ha as pre-emergence + atrazine 1.1 kg/ha as post-emergence (9.3 and 10.4 t/ha) and atrazine 0.75 kg/ha as pre-emergence + atrazine 1.1 kg/ha as post-emergence (9.07 and 10.12 t/ha). The atrazine 1.0 kg/ha as pre-emergence + atrazine 1.1 kg/ha as post-emergence gave maximum net return of (‘ 93,650/ha and ’ 1,21,050/ha) and maximum net return per rupee invested (1.88 and 2.31).
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Claims 6
Claim · model-written summary
Atrazine 1.0 kg/ha pre-emergence followed by 1.1 kg/ha post-emergence gave the highest weed control efficiency.
- Treatment
- atrazine 1.0 kg/ha as pre-emergence + atrazine 1.1 kg/ha as post-emergencee1
- Outcome
- weed control efficiencye1
- Direction
- Higheste1
- Setting
- research farm of Uttar Banga Krishi Viswavidyalaya, Pundibari, Cooch Behar, West Bengale0
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“no-tilled dribbling maize”
e0“A field experiment was carried out during winter (Rabi) seasons of 2012–13 and 2013–14 at research farm of Uttar Banga Krishi Viswavidyalaya, Pundibari, Cooch Behar, West Bengal”
e1“Highest weed control efficiency and lowest weed index values were registered by atrazine 1.0 kg/ha as pre-emergence + atrazine 1.1 kg/ha as post-emergence”
Claim · model-written summary
Atrazine 1.0 kg/ha pre-emergence followed by 1.1 kg/ha post-emergence gave the lowest weed index.
- Treatment
- atrazine 1.0 kg/ha as pre-emergence + atrazine 1.1 kg/ha as post-emergencee1
- Outcome
- weed index valuese1
- Direction
- loweste1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“no-tilled dribbling maize”
e1“Highest weed control efficiency and lowest weed index values were registered by atrazine 1.0 kg/ha as pre-emergence + atrazine 1.1 kg/ha as post-emergence”
Claim · model-written summary
Season-long weed-free condition gave the highest grain yield of maize, 9.52 and 10.6 t/ha, statistically at par with atrazine 1.0 kg/ha pre-emergence plus 1.1 kg/ha post-emergence.
- Treatment
- season long weed free conditione2
- Outcome
- grain/kernel yield of maizee2
- Direction
- higheste2
- Value
- 9.52 and 10.6 t/hae2
- Qualifier
- 9.3 and 10.4 t/hae2
- Comparator
- atrazine 1.0 kg/ha as pre-emergence + atrazine 1.1 kg/ha as post-emergencee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“no-tilled dribbling maize”
e2“season long weed free condition recorded the highest grain/kernel yield of maize (9.52 and 10.6 t/ha) during both the years, which was statistically at par with atrazine 1.0 kg/ha as pre-emergence + atrazine 1.1 kg/ha as post-emergence (9.3 and 10.4 t/ha)”
Claim · model-written summary
Atrazine 1.0 kg/ha pre-emergence plus 1.1 kg/ha post-emergence gave the maximum net return of 93,650/ha.
- Treatment
- atrazine 1.0 kg/ha as pre-emergence + atrazine 1.1 kg/ha as post-emergencee3
- Outcome
- net returne3
- Direction
- maximume3
- Value
- 93,650/hae3
- Qualifier
- 1,21,050/hae3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“no-tilled dribbling maize”
e3“The atrazine 1.0 kg/ha as pre-emergence + atrazine 1.1 kg/ha as post-emergence gave maximum net return of (‘ 93,650/ha and ’ 1,21,050/ha) and maximum net return per rupee invested (1.88 and 2.31)”
Claim · model-written summary
Atrazine 1.0 kg/ha pre-emergence plus 1.1 kg/ha post-emergence gave the maximum net return per rupee invested, 1.88 and 2.31.
- Treatment
- atrazine 1.0 kg/ha as pre-emergence + atrazine 1.1 kg/ha as post-emergencee3
- Outcome
- net return per rupee investede3
- Direction
- maximume3
- Value
- 1.88 and 2.31e3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“no-tilled dribbling maize”
e3“The atrazine 1.0 kg/ha as pre-emergence + atrazine 1.1 kg/ha as post-emergence gave maximum net return of (‘ 93,650/ha and ’ 1,21,050/ha) and maximum net return per rupee invested (1.88 and 2.31)”
Claim · model-written summary
The dominant weed flora in no-tilled dribbling maize were Polygonum persicaria and Digitaria ciliaris, among other broad-leaved and grass weeds.
- Interactor
- Polygonum persicaria
Persicaria maculosae4weed - Second interactor
- Digitaria ciliaris
Digitaria ciliarise4weed - Outcome
- dominant weed florae4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“no-tilled dribbling maize”
e4“The dominant weed flora were the broad-leaved weeds Polygonum persicaria, P. pensylvanicum, P. orientale, and the grasses Digitaria ciliaris, Setaria glauca”
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