Abstract
A field experiment was conducted during the rainy (kharif) seasons of 2018 and 2019 at Sardarkrushinagar, Gujarat, to study the productivity enhancement of Bt cotton (Gossypium hirsutum) grown under high-density planting system using mepiquat chloride. The experiment was laid out in split-plot design, with planting density in main plots and mepiquat chloride treatments in subplots. Pooled data of 2 years revealed that, Bt cotton grown with lower plant density (37,037 plants/ha) recorded significantly higher sympodial branches/plant, sympodial length at 50% height, number of bolls/plant and average boll weight, while high-plant density (74,074 plants/ha) resulted in the maximum seed-cotton (3,544 kg/ha) and stalk yield (3,740 kg/ha) as well as net realization (79.1 103 `/ha). The magnitude of increase in seed-cotton yield owing to higher plant density over lower plant density was 68.53%, on pooled basis. Application of 3 sprays of mepiquat chloride @ 0.4 ml/litre (one each at 45, 60 and 75 days after sowing) resulted in the least growth parameters, viz. plant height, dry-matter accumulation, crop-growth rate, relative growth rate and stalk yield with a highest yield attributes, viz. sympodial branches/plant, sympodial length at 50% height, bolls/plant, average boll weight, seed-cotton yield (3,186 kg/ha) and net realization (66.8 103`/ha). Three sprays of mepiquat chloride @ 0.4 ml/l at 45, 60 and 75 days after sowing resulted in 28.8% higher seed-cotton yield than control treatment in pooled mean
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Claims 8
Claim · model-written summary
Lower density gave significantly higher sympodial branching and length, boll number and weight.
- Taxon
- Bt cottont0
- Treatment
- lower plant density (37,037 plants/ha)e0
- Outcome
- sympodial branches/plant, sympodial length at 50% height, number of bolls/plant and average boll weighte0
- Direction
- highere0
Not reportedComparator
Verbatim
e0“Bt cotton grown with lower plant density (37,037 plants/ha) recorded significantly higher sympodial branches/plant, sympodial length at 50% height, number of bolls/plant and average boll weight”
t0“Bt cotton (Gossypium hirsutum)”
Claim · model-written summary
High density produced maximum seed-cotton yield of 3,544 kg/ha, 68.53% above lower density.
Verbatim
e0“high-plant density (74,074 plants/ha) resulted in the maximum seed-cotton (3,544 kg/ha)”
e1“The magnitude of increase in seed-cotton yield owing to higher plant density over lower plant density was 68.53%”
t0“Bt cotton (Gossypium hirsutum)”
Claim · model-written summary
High density produced maximum stalk yield of 3,740 kg/ha.
- Taxon
- Bt cottont0
- Treatment
- high-plant density (74,074 plants/ha)e0
- Outcome
- stalk yielde0
- Direction
- maximume0
- Value
- 3,740 kg/hae0
Not reportedComparator
Verbatim
e0“high-plant density (74,074 plants/ha) resulted in the maximum seed-cotton (3,544 kg/ha) and stalk yield (3,740 kg/ha)”
t0“Bt cotton (Gossypium hirsutum)”
Claim · model-written summary
High density gave maximum net realization of 79.1 103 `/ha.
- Taxon
- Bt cottont0
- Treatment
- high-plant density (74,074 plants/ha)e0
- Outcome
- net realizatione0
- Direction
- maximume0
- Value
- 79.1 103 `/hae0
Not reportedComparator
Verbatim
e0“high-plant density (74,074 plants/ha) resulted in the maximum seed-cotton (3,544 kg/ha) and stalk yield (3,740 kg/ha) as well as net realization (79.1 103 `/ha)”
t0“Bt cotton (Gossypium hirsutum)”
Claim · model-written summary
Three mepiquat chloride sprays at 0.4 ml/litre gave the least plant height, dry matter, crop growth, relative growth, and stalk yield.
- Taxon
- Bt cottont0
- Treatment
- 3 sprays of mepiquat chloride @ 0.4 ml/litree0
- Outcome
- plant height, dry-matter accumulation, crop-growth rate, relative growth rate and stalk yielde0
- Direction
- leaste0
Not reportedComparator
Verbatim
e0“Application of 3 sprays of mepiquat chloride @ 0.4 ml/litre (one each at 45, 60 and 75 days after sowing) resulted in the least growth parameters, viz. plant height, dry-matter accumulation, crop-growth rate, relative growth rate and stalk yield”
t0“Bt cotton (Gossypium hirsutum)”
Claim · model-written summary
Three mepiquat chloride sprays gave highest sympodial branches and length, boll number and weight.
- Taxon
- Bt cottont0
- Treatment
- 3 sprays of mepiquat chloride @ 0.4 ml/litree0
- Outcome
- sympodial branches/plant, sympodial length at 50% height, bolls/plant, average boll weighte0
- Direction
- higheste0
Not reportedComparator
Verbatim
e0“Application of 3 sprays of mepiquat chloride @ 0.4 ml/litre (one each at 45, 60 and 75 days after sowing) resulted in the least growth parameters, viz. plant height, dry-matter accumulation, crop-growth rate, relative growth rate and stalk yield with a highest yield attributes, viz. sympodial branches/plant, sympodial length at 50% height, bolls/plant, average boll weight”
t0“Bt cotton (Gossypium hirsutum)”
Claim · model-written summary
Three mepiquat chloride sprays produced 3,186 kg/ha seed cotton, 28.8% more than control.
Verbatim
e0“Three sprays of mepiquat chloride @ 0.4 ml/l at 45, 60 and 75 days after sowing resulted in 28.8% higher seed-cotton yield than control treatment in pooled mean”
e1“seed-cotton yield (3,186 kg/ha)”
t0“Bt cotton (Gossypium hirsutum)”
Claim · model-written summary
Three mepiquat chloride sprays gave highest net realization of 66.8 103`/ha.
- Taxon
- Bt cottont0
- Treatment
- 3 sprays of mepiquat chloride @ 0.4 ml/litree0
- Outcome
- net realizatione0
- Direction
- higheste0
- Value
- 66.8 103`/hae0
Not reportedComparator
Verbatim
e0“Application of 3 sprays of mepiquat chloride @ 0.4 ml/litre (one each at 45, 60 and 75 days after sowing) resulted in the least growth parameters, viz. plant height, dry-matter accumulation, crop-growth rate, relative growth rate and stalk yield with a highest yield attributes, viz. sympodial branches/plant, sympodial length at 50% height, bolls/plant, average boll weight, seed-cotton yield (3,186 kg/ha) and net realization (66.8 103`/ha)”
t0“Bt cotton (Gossypium hirsutum)”
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