Abstract
A field experiment was conducted at Department of Agronomy, Agricultural College, UAS, Raichur during 2016-17 and 2017-8 to know the effect of planting geometry, fertilizer levels along with growth retardant spray on light interception, growth and yield of cotton grown under HDPS. The experiment was laid out in split plot design consisting of three levels of planting geometries viz., S1: 60 cm x 10 cm (1,66,666 plants ha-1), S2: 75 cm x 10 cm (1,33,333 plants ha-1) and S3: 90 cm x 10 cm (1,11,111 plants ha-1) in main plots and six levels of fertilizers and growth retardants viz., M1: 60:30:30 N:P2O5:K2O kg ha-1, M2: 80:40:40 N:P2O5:K2O kg ha-1, M3: 100:50:50 N:P2O5:K2O kg ha-1, M4: M1 + mepiqnat chloride @ 250 ppm sprayed at 60 DAS, M5: M2 + mepiquat chloride @ 250 ppm sprayed at 60 DAS and M6: M3 + mepiquat chloride @ 250 ppm sprayed at 60 DAS in sub plots. The result revealed that the closer row spacing of 60 cm x 10 cm recorded significantly higher light interception ratio (48.10, 55.46 and 77.83% plant-1 at 60, 90 and 120 DAS, respectively on pooled basis) while wider row spacing of 90 cm x 10 cm recorded significantly lower light interception ratio (40.08, 48.22 and 70.60% plant-1 at 60, 90 and 120 DAS, respectively on pooled basis). Closer row spacing of 60 cm x 10 cm produced significantly higher seed cotton yield (2875 kg ha-1) over other planting geometries. Whereas, the growth attributes viz., number of sympodial branches per plant, total dry matter production per plant and absolute growth rate (13.82, 140.14 g and 1.81 g plant-1 day-1, respectively on pooled basis) and yield attributes viz., number of bolls per plant and boll weight (12.74 and 3.68 g, respectively on pooled basis) were significantly higher at a wider row spacing of 90 cm x 10 cm. Among different fertilizer levels, light interception ratio was significantly higher with the application of 100:50:50 N:P2O5:K2O kg ha-1 ( 47.40, 58.76 and 82.04% plant-1 at 60, 90 and 120 DAS, respectively on pooled basis) and significantly lower was observed with the application of 60:30:30 N:P2O5:K2O kg ha-1 + mepiqnat chloride @ 250 ppm sprayed at 60 DAS (44.15 and 65.74% plant-1 at 90 and 120 DAS, respectively on pooled basis). Application of 100:50:50 N:P2O5:K2O kg ha-1 + mepiquat chloride @ 250 ppm sprayed at 60 DAS recoded significantly higher seed cotton yield (2915 kg ha-1). Further, the same treatment recorded significantly higher growth and yield attributing characters. Lower seed cotton yield was recorded with the application of 60:30:30 N:P2O5:K2O kg ha-1 (2392 kg ha-1). Among the different treatment combinations, a treatment combination of closer spacing of 60 cm x 10 cm along with application of higher fertilizer dose of 100:50:50 N, P2O5 and K2O kg ha-1 recorded significantly higher light interception ratio of 50.53, 61.69 and 85.02 per cent plant-1 at 60, 90 and 120 DAS, respectively on pooled basis. Interaction of a row spacing of 60 cm x 10 cm along with application of 100:50:50 N:P2O5:K2O kg ha-1 + mepiquat chloride @ 250 ppm sprayed at 60 DAS recoded significantly higher seed cotton yield (3178 kg ha-1) followed by combination of a row spacing of 60 cm x 10 cm along with application of 80:40:40 N:P2O5:K2O kg ha-1 + mepiquat chloride @ 250 ppm sprayed at 60 DAS (3031 kg ha-1). While, growth and yield attributing characters were higher under the combination of a row spacing of 90 cm x 10 cm along with application of 100:50:50 N:P2O5:K2O kg ha-1 + mepiquat chloride @ 250 ppm sprayed at 60 DAS.
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Claims 17
Claim · model-written summary
Narrow spacing increased cotton light interception at 60, 90, and 120 DAS.
- Treatment
- 60 cm x 10 cme0
- Outcome
- light interception ratioe0
- Direction
- highere0
- Value
- 48.10, 55.46 and 77.83% plant-1e0
Not reportedTaxonComparator
Verbatim
e0“closer row spacing of 60 cm x 10 cm recorded significantly higher light interception ratio (48.10, 55.46 and 77.83% plant-1 at 60, 90 and 120 DAS, respectively on pooled basis)”
Claim · model-written summary
Wider spacing had lower cotton light interception at 60, 90, and 120 DAS.
- Treatment
- 90 cm x 10 cme0
- Outcome
- light interception ratioe0
- Direction
- lowere0
- Value
- 40.08, 48.22 and 70.60% plant-1e0
Not reportedTaxonComparator
Verbatim
e0“wider row spacing of 90 cm x 10 cm recorded significantly lower light interception ratio (40.08, 48.22 and 70.60% plant-1 at 60, 90 and 120 DAS, respectively on pooled basis)”
Claim · model-written summary
Cotton seed yield was higher at 60 cm by 10 cm than at other spacings.
- Taxon
- cotton
Gossypium hirsutume0 - Treatment
- 60 cm x 10 cme0
- Outcome
- seed cotton yielde0
- Direction
- highere0
- Value
- 2875 kg ha-1e0
- Comparator
- other planting geometriese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Closer row spacing of 60 cm x 10 cm produced significantly higher seed cotton yield (2875 kg ha-1) over other planting geometries.”
Claim · model-written summary
Wider spacing increased cotton sympodial branches per plant.
- Treatment
- 90 cm x 10 cme0
- Outcome
- number of sympodial branches per plante0
- Direction
- highere0
- Value
- 13.82e0
Not reportedTaxonComparator
Verbatim
e0“number of sympodial branches per plant, total dry matter production per plant and absolute growth rate (13.82, 140.14 g and 1.81 g plant-1 day-1, respectively on pooled basis) and yield attributes viz., number of bolls per plant and boll weight (12.74 and 3.68 g, respectively on pooled basis) were significantly higher at a wider row spacing of 90 cm x 10 cm”
Claim · model-written summary
Wider spacing increased cotton dry matter production per plant.
- Treatment
- 90 cm x 10 cme0
- Outcome
- total dry matter production per plante0
- Direction
- highere0
- Value
- 140.14 ge0
Not reportedTaxonComparator
Verbatim
e0“number of sympodial branches per plant, total dry matter production per plant and absolute growth rate (13.82, 140.14 g and 1.81 g plant-1 day-1, respectively on pooled basis) and yield attributes viz., number of bolls per plant and boll weight (12.74 and 3.68 g, respectively on pooled basis) were significantly higher at a wider row spacing of 90 cm x 10 cm”
Claim · model-written summary
Wider spacing increased cotton absolute growth rate.
Not reportedTaxonComparator
Verbatim
e0“number of sympodial branches per plant, total dry matter production per plant and absolute growth rate (13.82, 140.14 g and 1.81 g plant-1 day-1, respectively on pooled basis) and yield attributes viz., number of bolls per plant and boll weight (12.74 and 3.68 g, respectively on pooled basis) were significantly higher at a wider row spacing of 90 cm x 10 cm”
Claim · model-written summary
Wider spacing increased cotton boll number per plant.
Not reportedTaxonComparator
Verbatim
e0“number of sympodial branches per plant, total dry matter production per plant and absolute growth rate (13.82, 140.14 g and 1.81 g plant-1 day-1, respectively on pooled basis) and yield attributes viz., number of bolls per plant and boll weight (12.74 and 3.68 g, respectively on pooled basis) were significantly higher at a wider row spacing of 90 cm x 10 cm”
Claim · model-written summary
Wider spacing increased cotton boll weight.
Not reportedTaxonComparator
Verbatim
e0“number of sympodial branches per plant, total dry matter production per plant and absolute growth rate (13.82, 140.14 g and 1.81 g plant-1 day-1, respectively on pooled basis) and yield attributes viz., number of bolls per plant and boll weight (12.74 and 3.68 g, respectively on pooled basis) were significantly higher at a wider row spacing of 90 cm x 10 cm”
Claim · model-written summary
The highest fertilizer dose increased cotton light interception.
- Treatment
- 100:50:50 N:P2O5:K2O kg ha-1e0
- Outcome
- light interception ratioe0
- Direction
- highere0
- Value
- 47.40, 58.76 and 82.04% plant-1e0
Not reportedTaxonComparator
Verbatim
e0“light interception ratio was significantly higher with the application of 100:50:50 N:P2O5:K2O kg ha-1 ( 47.40, 58.76 and 82.04% plant-1 at 60, 90 and 120 DAS, respectively on pooled basis)”
Claim · model-written summary
The lowest fertilizer dose with mepiquat chloride had lower cotton light interception.
- Treatment
- 60:30:30 N:P2O5:K2O kg ha-1 + mepiqnat chloride @ 250 ppm sprayed at 60 DASe0
- Direction
- lowere0
- Value
- 44.15 and 65.74% plant-1e0
Not reportedTaxonComparatorOutcome
Verbatim
e0“significantly lower was observed with the application of 60:30:30 N:P2O5:K2O kg ha-1 + mepiqnat chloride @ 250 ppm sprayed at 60 DAS (44.15 and 65.74% plant-1 at 90 and 120 DAS, respectively on pooled basis)”
Claim · model-written summary
High fertilizer with mepiquat chloride increased seed cotton yield.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- 100:50:50 N:P2O5:K2O kg ha-1 + mepiquat chloride @ 250 ppm sprayed at 60 DASe0
- Outcome
- seed cotton yielde0
- Direction
- highere0
- Value
- 2915 kg ha-1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of 100:50:50 N:P2O5:K2O kg ha-1 + mepiquat chloride @ 250 ppm sprayed at 60 DAS recoded significantly higher seed cotton yield (2915 kg ha-1).”
Claim · model-written summary
High fertilizer with mepiquat chloride increased cotton growth and yield attributes.
Not reportedTaxonTreatmentComparator
Verbatim
e0“the same treatment recorded significantly higher growth and yield attributing characters.”
Claim · model-written summary
Low fertilizer produced lower seed cotton yield.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- 60:30:30 N:P2O5:K2O kg ha-1e0
- Outcome
- seed cotton yielde0
- Direction
- Lowere0
- Value
- 2392 kg ha-1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lower seed cotton yield was recorded with the application of 60:30:30 N:P2O5:K2O kg ha-1 (2392 kg ha-1).”
Claim · model-written summary
Narrow spacing with high fertilizer increased cotton light interception.
- Treatment
- closer spacing of 60 cm x 10 cm along with application of higher fertilizer dose of 100:50:50 N, P2O5 and K2O kg ha-1e0
- Outcome
- light interception ratioe0
- Direction
- highere0
- Value
- 50.53, 61.69 and 85.02 per cent plant-1e0
Not reportedTaxonComparator
Verbatim
e0“closer spacing of 60 cm x 10 cm along with application of higher fertilizer dose of 100:50:50 N, P2O5 and K2O kg ha-1 recorded significantly higher light interception ratio of 50.53, 61.69 and 85.02 per cent plant-1 at 60, 90 and 120 DAS”
Claim · model-written summary
Narrow spacing and high fertilizer with mepiquat chloride yielded 3178 kg per hectare of seed cotton.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- row spacing of 60 cm x 10 cm along with application of 100:50:50 N:P2O5:K2O kg ha-1 + mepiquat chloride @ 250 ppm sprayed at 60 DASe0
- Outcome
- seed cotton yielde0
- Direction
- highere0
- Value
- 3178 kg ha-1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“row spacing of 60 cm x 10 cm along with application of 100:50:50 N:P2O5:K2O kg ha-1 + mepiquat chloride @ 250 ppm sprayed at 60 DAS recoded significantly higher seed cotton yield (3178 kg ha-1)”
Claim · model-written summary
Narrow spacing and medium fertilizer with mepiquat chloride yielded 3031 kg per hectare of seed cotton.
- Treatment
- row spacing of 60 cm x 10 cm along with application of 80:40:40 N:P2O5:K2O kg ha-1 + mepiquat chloride @ 250 ppm sprayed at 60 DASe0
- Value
- 3031 kg ha-1e0
Not reportedTaxonComparatorOutcomeDirection
Verbatim
e0“row spacing of 60 cm x 10 cm along with application of 80:40:40 N:P2O5:K2O kg ha-1 + mepiquat chloride @ 250 ppm sprayed at 60 DAS (3031 kg ha-1)”
Claim · model-written summary
Wider spacing with high fertilizer and mepiquat chloride had higher cotton growth and yield attributes.
- Treatment
- row spacing of 90 cm x 10 cm along with application of 100:50:50 N:P2O5:K2O kg ha-1 + mepiquat chloride @ 250 ppm sprayed at 60 DASe0
- Outcome
- growth and yield attributing characterse0
- Direction
- highere0
Not reportedTaxonComparator
Verbatim
e0“growth and yield attributing characters were higher under the combination of a row spacing of 90 cm x 10 cm along with application of 100:50:50 N:P2O5:K2O kg ha-1 + mepiquat chloride @ 250 ppm sprayed at 60 DAS”
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