Abstract
Two different field experiments were conducted at Punjab Agricultural University, Regional Research Station, Bathinda, (1) to manage optimum source-sink relationship through mepiquat chloride (MC) in Bt cotton hybrid and (2) to find feasibility of MC application on non hybrid compact cotton genotype under high density planting system (HDPS) with varied nitrogen levels. Raw data for growth and yield parameters was recorded from each treatment and statistically analysed. In experiment (1), application of MC 75 g active ingredient per hectare (a.i./ha) irrespective of splits between 60 and 90 days after sowing (DAS) was effective for significant reduction in plant height, increase in bolls per plant as compared to control and de-topping treatments. All these led to significantly highest seed cotton yield (SCY) and monetary returns under MC 75 g a.i./ha as compared to de-topping treatment. In experiment (2) of high density planting of cotton, sympods per plant, bolls per plant, SCY as well as nitrogen use efficiency (NUE) and monetary returns were increased significantly with 25% increase in recommended dose of nitrogen. Among the growth retardants, application of MC 20 g a.i./ha once and twice reduced plant height, increased sympods and boll per plant significantly which led to significantly higher SCY production as compared to control. Similarly, NUE and monetary returns were also significantly higher under MC treatments as compared to control. Application of MC 75 g a.i./ha in either two or three splits on Bt cotton hybrid under normal plant density and MC 20–40 g a.i./ha on non Bt compact genotype under high plant density optimized source-sink relationship which improve crop productivity and profitability.
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Claims 10
Claim · model-written summary
Mepiquat chloride at 75 g a.i./ha significantly reduced plant height of cotton compared with control and de-topping.
- Taxon
- cotton
Gossypium hirsutumt0 - Treatment
- MC 75 g active ingredient per hectare (a.i./ha)e1
- Outcome
- plant heighte1
- Direction
- reductione1
- Qualifier
- irrespective of splits between 60 and 90 days after sowing (DAS)e1
- Comparator
- control and de-topping treatmentse1
- Setting
- Regional Research Station, Bathindae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Two different field experiments were conducted at Punjab Agricultural University, Regional Research Station, Bathinda”
e1“application of MC 75 g active ingredient per hectare (a.i./ha) irrespective of splits between 60 and 90 days after sowing (DAS) was effective for significant reduction in plant height, increase in bolls per plant as compared to control and de-topping treatments”
t0“profitability of cotton in north west, India”
Claim · model-written summary
Mepiquat chloride at 75 g a.i./ha increased bolls per plant compared with control and de-topping.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- MC 75 g active ingredient per hectare (a.i./ha)e1
- Outcome
- bolls per plante1
- Direction
- increasee1
- Comparator
- control and de-topping treatmentse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“application of MC 75 g active ingredient per hectare (a.i./ha) irrespective of splits between 60 and 90 days after sowing (DAS) was effective for significant reduction in plant height, increase in bolls per plant as compared to control and de-topping treatments”
t0“profitability of cotton in north west, India”
Claim · model-written summary
Mepiquat chloride at 75 g a.i./ha gave significantly the highest seed cotton yield and monetary returns compared with de-topping.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- MC 75 g a.i./hae3
- Outcome
- seed cotton yield (SCY) and monetary returnse3
- Direction
- higheste3
- Comparator
- de-topping treatmente3
- Setting
- Regional Research Station, Bathindae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Two different field experiments were conducted at Punjab Agricultural University, Regional Research Station, Bathinda”
e3“All these led to significantly highest seed cotton yield (SCY) and monetary returns under MC 75 g a.i./ha as compared to de-topping treatment”
t0“profitability of cotton in north west, India”
Claim · model-written summary
A 25% increase in recommended nitrogen dose significantly increased sympods per plant, bolls per plant and seed cotton yield in high-density cotton.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- 25% increase in recommended dose of nitrogene4
- Outcome
- sympods per plant, bolls per plant, SCYe4
- Direction
- increasede4
- Comparator
- recommended dose of nitrogene4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“In experiment (2) of high density planting of cotton, sympods per plant, bolls per plant, SCY as well as nitrogen use efficiency (NUE) and monetary returns were increased significantly with 25% increase in recommended dose of nitrogen”
t0“profitability of cotton in north west, India”
Claim · model-written summary
A 25% increase in recommended nitrogen dose significantly increased nitrogen use efficiency and monetary returns in high-density cotton.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- 25% increase in recommended dose of nitrogene4
- Outcome
- nitrogen use efficiency (NUE) and monetary returnse4
- Direction
- increasede4
- Comparator
- recommended dose of nitrogene4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“In experiment (2) of high density planting of cotton, sympods per plant, bolls per plant, SCY as well as nitrogen use efficiency (NUE) and monetary returns were increased significantly with 25% increase in recommended dose of nitrogen”
t0“profitability of cotton in north west, India”
Claim · model-written summary
Mepiquat chloride at 20 g a.i./ha once and twice reduced plant height of cotton compared with control.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- application of MC 20 g a.i./ha once and twicee5
- Outcome
- plant heighte5
- Direction
- reducede5
- Comparator
- controle5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Among the growth retardants, application of MC 20 g a.i./ha once and twice reduced plant height, increased sympods and boll per plant significantly which led to significantly higher SCY production as compared to control”
t0“profitability of cotton in north west, India”
Claim · model-written summary
Mepiquat chloride at 20 g a.i./ha once and twice significantly increased sympods and bolls per plant compared with control.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- application of MC 20 g a.i./ha once and twicee5
- Outcome
- sympods and boll per plante5
- Direction
- increasede5
- Comparator
- controle5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Among the growth retardants, application of MC 20 g a.i./ha once and twice reduced plant height, increased sympods and boll per plant significantly which led to significantly higher SCY production as compared to control”
t0“profitability of cotton in north west, India”
Claim · model-written summary
Mepiquat chloride at 20 g a.i./ha once and twice gave significantly higher seed cotton yield than control.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- application of MC 20 g a.i./ha once and twicee5
- Outcome
- SCY productione5
- Direction
- highere5
- Comparator
- controle5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Among the growth retardants, application of MC 20 g a.i./ha once and twice reduced plant height, increased sympods and boll per plant significantly which led to significantly higher SCY production as compared to control”
t0“profitability of cotton in north west, India”
Claim · model-written summary
Mepiquat chloride treatments significantly increased nitrogen use efficiency and monetary returns compared with control.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- MC treatmentse6
- Outcome
- NUE and monetary returnse6
- Direction
- highere6
- Comparator
- controle6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Similarly, NUE and monetary returns were also significantly higher under MC treatments as compared to control”
t0“profitability of cotton in north west, India”
Claim · model-written summary
Mepiquat chloride at 75 g a.i./ha in two or three splits on Bt hybrid cotton at normal density, and 20-40 g a.i./ha on non-Bt compact cotton at high density, improve crop productivity and profitability.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- MC 75 g a.i./ha in either two or three splitse7
- Outcome
- crop productivity and profitabilitye7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“Application of MC 75 g a.i./ha in either two or three splits on Bt cotton hybrid under normal plant density and MC 20–40 g a.i./ha on non Bt compact genotype under high plant density optimized source-sink relationship which improve crop productivity and profitability”
t0“profitability of cotton in north west, India”
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