Abstract
A field study was undertaken, at S.V. Agricultural College, Tirupati during the rabi seasons of 2002 and 2003 to identify effective and economical weed management options for sunflower by studying the effect of planting pattern and weed management practices on weed flora and seed yield of rabi sunflower. Planting pattern of 45 x 30 cm recorded significantly lower weed density and biomass thus resulting in higher seed yield over 60 x 22.5 cm. Among the weed management practices, the lowest density and biomass of weeds at harvest were recorded with hand weeding (HW) twice closely followed by fluchloralin at 0.5 kg/ha+ pendimethalin at 0.5 kg/ha supplemented with one HW at 40 DAS. However, sunflower seed yield was the highest with HW twice followed by application of pendimethalin at 1.0 kg/ha. The use of planting pattern of 45 x 30 cm and managing associated weeds with HW twice at 20 and 40 DAS or pre-emergence application of pendimethalin at 1.0 kg/ha resulted in higher net returns and seed yield of irrigated rabi sunflower.
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Claims 6
Claim · model-written summary
Planting pattern of 45 x 30 cm significantly lowered weed density and biomass compared with 60 x 22.5 cm.
Verbatim
t0“rabi sunflower”
e1“Planting pattern of 45 x 30 cm recorded significantly lower weed density and biomass thus resulting in higher seed yield over 60 x 22.5 cm”
Claim · model-written summary
Planting pattern of 45 x 30 cm gave higher seed yield than 60 x 22.5 cm.
Verbatim
t0“rabi sunflower”
e1“Planting pattern of 45 x 30 cm recorded significantly lower weed density and biomass thus resulting in higher seed yield over 60 x 22.5 cm”
Claim · model-written summary
Among the weed management practices, hand weeding twice gave the lowest weed density and biomass at harvest.
Verbatim
t0“rabi sunflower”
e2“Among the weed management practices, the lowest density and biomass of weeds at harvest were recorded with hand weeding (HW) twice”
Claim · model-written summary
Hand weeding twice gave the highest sunflower seed yield, followed by pendimethalin at 1.0 kg/ha.
Verbatim
t0“rabi sunflower”
e3“sunflower seed yield was the highest with HW twice followed by application of pendimethalin at 1.0 kg/ha”
Claim · model-written summary
Planting pattern of 45 x 30 cm with hand weeding twice at 20 and 40 DAS resulted in higher net returns and seed yield of irrigated rabi sunflower.
- Taxon
- rabi sunflowert0
- Treatment
- planting pattern of 45 x 30 cm and managing associated weeds with HW twice at 20 and 40 DASe4
- Outcome
- net returns and seed yielde4
- Direction
- highere4
Not reportedComparator
Verbatim
t0“rabi sunflower”
e4“The use of planting pattern of 45 x 30 cm and managing associated weeds with HW twice at 20 and 40 DAS or pre-emergence application of pendimethalin at 1.0 kg/ha resulted in higher net returns and seed yield of irrigated rabi sunflower”
Claim · model-written summary
Pre-emergence application of pendimethalin at 1.0 kg/ha resulted in higher net returns and seed yield of irrigated rabi sunflower.
- Taxon
- rabi sunflowert0
- Treatment
- pre-emergence application of pendimethalin at 1.0 kg/hae4
- Outcome
- net returns and seed yielde4
- Direction
- highere4
Not reportedComparator
Verbatim
t0“rabi sunflower”
e4“The use of planting pattern of 45 x 30 cm and managing associated weeds with HW twice at 20 and 40 DAS or pre-emergence application of pendimethalin at 1.0 kg/ha resulted in higher net returns and seed yield of irrigated rabi sunflower”
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