Abstract
The investigation entitled “Assessment of morpho-physiological and yield performance of Bt cotton under HDPS using diverse canopy management techniques” was conducted using a split-plot design and replicated thrice during the Kharif 2023 season at the All India Coordinated Cotton Improvement Project, MPKV, Rahuri, Dist. Ahilyanagar (M.S.), India. The experiment utilized the RCH-659 Bt cotton hybrid. The experimental field was arranged in 48-unit plots, each measuring approximately 6.30 x 6.00 m² for gross plot size, with net plot sizes varying according to spacing. Two factors were considered: spacing, viz., S1 (60x30 cm), S2 (90x30 cm), S3 (120x30 cm) and S4 (120x60 cm) and canopy management techniques viz., T1 (Pruning at 40 DAS and topping at 70 DAS), T2 (Pruning at 50 DAS and topping at 80 DAS), T3 (Mepiquat chloride @ 50 ppm at 55 and 75 DAS) and T4 (No pruning and no topping - control), were used to set up the experiment. Morphological observations, such as minimum plant height and maximum sympodial length, were recorded in treatment T1 (pruning at 40 DAS and topping at 70 DAS) under spacing S4 (120 x 60 cm) compared to all other treatments and spacings. The maximum number of sympodia plant-1 was observed in T3 (Mepiquat chloride at 50 ppm at 55 and 75 DAS) under spacing S4 (120 x 60 cm) at harvest. Physiological parameters such as chlorophyll index (SPAD) and rate of photosynthesis were recorded superior results under treatment T1 (pruning at 40 DAS and topping at 70 DAS) with spacing S4 (120 x 60 cm) at 30, 60 and 90 DAS. Yield parameters such as seed cotton yield plant-1 showed superior results with treatment T1 (pruning at 40 DAS and topping at 70 DAS) under spacing S4 (120 x 60 cm). The significantly highest seed cotton yield ha-1 at 140 and 165 DAS and total seed cotton yield ha-1 was recorded in treatment T1 (pruning at 40 DAS and topping at 70 DAS) with spacing S2 (90 x 30 cm).
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Claims 6
Claim · model-written summary
Under pruning at 40 DAS and topping at 70 DAS with spacing S4 (120 x 60 cm), Bt cotton had the minimum plant height compared with all other treatments and spacings.
Verbatim
e0“The experiment utilized the RCH-659 Bt cotton hybrid”
e1“Morphological observations, such as minimum plant height and maximum sympodial length, were recorded in treatment T1 (pruning at 40 DAS and topping at 70 DAS) under spacing S4 (120 x 60 cm) compared to all other treatments and spacings”
e2“during the Kharif 2023 season at the All India Coordinated Cotton Improvement Project, MPKV, Rahuri”
Claim · model-written summary
Under pruning at 40 DAS and topping at 70 DAS with spacing S4 (120 x 60 cm), Bt cotton had the maximum sympodial length compared with all other treatments and spacings.
Verbatim
e0“The experiment utilized the RCH-659 Bt cotton hybrid”
e1“Morphological observations, such as minimum plant height and maximum sympodial length, were recorded in treatment T1 (pruning at 40 DAS and topping at 70 DAS) under spacing S4 (120 x 60 cm) compared to all other treatments and spacings”
e2“during the Kharif 2023 season at the All India Coordinated Cotton Improvement Project, MPKV, Rahuri”
Claim · model-written summary
Mepiquat chloride at 50 ppm at 55 and 75 DAS under spacing S4 (120 x 60 cm) gave the maximum number of sympodia per plant at harvest.
- Taxon
- Bt cottone0
- Material
- RCH-659e0
- Treatment
- Mepiquat chloride at 50 ppm at 55 and 75 DASe3
- Outcome
- number of sympodia plant-1e3
- Direction
- maximume3
- Qualifier
- at harveste3
Not reportedComparator
Verbatim
e0“The experiment utilized the RCH-659 Bt cotton hybrid”
e3“The maximum number of sympodia plant-1 was observed in T3 (Mepiquat chloride at 50 ppm at 55 and 75 DAS) under spacing S4 (120 x 60 cm) at harvest”
Claim · model-written summary
Under pruning at 40 DAS and topping at 70 DAS with spacing S4 (120 x 60 cm), chlorophyll index (SPAD) and rate of photosynthesis were superior at 30, 60 and 90 DAS.
- Taxon
- Bt cottone0
- Material
- RCH-659e0
- Treatment
- pruning at 40 DAS and topping at 70 DASe4
- Outcome
- chlorophyll index (SPAD) and rate of photosynthesise4
- Direction
- superiore4
- Qualifier
- at 30, 60 and 90 DASe4
Not reportedComparator
Verbatim
e0“The experiment utilized the RCH-659 Bt cotton hybrid”
e4“Physiological parameters such as chlorophyll index (SPAD) and rate of photosynthesis were recorded superior results under treatment T1 (pruning at 40 DAS and topping at 70 DAS) with spacing S4 (120 x 60 cm) at 30, 60 and 90 DAS”
Claim · model-written summary
Under pruning at 40 DAS and topping at 70 DAS with spacing S4 (120 x 60 cm), seed cotton yield per plant was superior.
- Taxon
- Bt cottone0
- Material
- RCH-659e0
- Treatment
- pruning at 40 DAS and topping at 70 DASe5
- Outcome
- seed cotton yield plant-1e5
- Direction
- superiore5
- Qualifier
- under spacing S4 (120 x 60 cm)e5
Not reportedComparator
Verbatim
e0“The experiment utilized the RCH-659 Bt cotton hybrid”
e5“Yield parameters such as seed cotton yield plant-1 showed superior results with treatment T1 (pruning at 40 DAS and topping at 70 DAS) under spacing S4 (120 x 60 cm)”
Claim · model-written summary
Under pruning at 40 DAS and topping at 70 DAS with spacing S2 (90 x 30 cm), seed cotton yield ha-1 at 140 and 165 DAS and total seed cotton yield ha-1 were significantly highest.
- Taxon
- Bt cottone0
- Material
- RCH-659e0
- Treatment
- pruning at 40 DAS and topping at 70 DASe6
- Outcome
- seed cotton yield ha-1e6
- Direction
- higheste6
- Qualifier
- with spacing S2 (90 x 30 cm)e6
Not reportedComparator
Verbatim
e0“The experiment utilized the RCH-659 Bt cotton hybrid”
e6“The significantly highest seed cotton yield ha-1 at 140 and 165 DAS and total seed cotton yield ha-1 was recorded in treatment T1 (pruning at 40 DAS and topping at 70 DAS) with spacing S2 (90 x 30 cm)”
The same questions in other papers
pruning · yield · Gossypium hirsutum (cotton)Results differ
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- positive
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- no effect
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See all 76 papers →pruning · physiology: photosynthesis · Gossypium hirsutum (cotton)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
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.