Abstract
Cotton is one of the most important cash crop in our country. Reddening is the most recent predominant problem in Bt cotton which became issue of debate for ascertaining the causes and remedies for reddening. To ascertain the role of nutrients in leaf reddening, the field experiment on effect of fertilizer levels on reddening in cotton on Vertisol was conducted at Cotton Improvement Project, Mahatma Phule Krishi Vidyapeeth, Rahuri during May to September, 2008. The experiment was laid out in Factorial Randomized Block Design with three replications and two main treatments i.e., hybrid Bt RCH-2 and Non-Bt RCH-2 and nine sub treatments with different fertilizer doses i.e., F 1 -No recommended doses of fertilizer (RDF), F 2 -50 % RDF, F 3 -75 % RDF, F 4 -100 % RDF, F 5 -125 % RDF, F 6 -150 % RDF, F 7 -100 % RDF + 2 % DAP spray, F 8 -100 % RDF + 1 % MgSO 4 and F 9 -100 % RDF + 1 % KNO 3 . The common RDF for Bt as well as non-Bt was 100 N, 50 P 2 O 5 and 50 K 2 O kg ha -1 . The results revealed that the incidence of leaf reddening was more in Bt cotton than non-Bt cotton. The minimum intensity of reddening in Bt and non-Bt cotton was observed in 100 % RDF + foliar sprays with 1% KNO 3 / 1% MgSO 4 / 2% DAP. Among the foliar spray 1 % KNO 3 showed minimum reddening of leaves, which suggest that at boll development stage the application of nitrogen and potassium were helpful for controlling the reddening in Bt and non-Bt cotton. However, the application of 100 % RDF + 1 % MgSO 4 spray was found to be the best for highest content of chlorophyll as well as yield of Bt and non-Bt cotton hybrids.
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Claims 7
Claim · model-written summary
Leaf reddening incidence was greater in Bt than non-Bt cotton.
- Taxon
- cotton
Gossypium hirsutume0 - Material
- Bt cottone0
- Outcome
- incidence of leaf reddeninge0
- Direction
- moree0
- Comparator
- non-Bt cottone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the incidence of leaf reddening was more in Bt cotton than non-Bt cotton”
Claim · model-written summary
The 100% RDF plus 1% KNO3 spray minimized leaf reddening in both cotton types.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- 100 % RDF + foliar sprays with 1% KNO 3e0
- Outcome
- intensity of reddeninge0
- Direction
- minimume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The minimum intensity of reddening in Bt and non-Bt cotton was observed in 100 % RDF + foliar sprays with 1% KNO 3 / 1% MgSO 4 / 2% DAP”
Claim · model-written summary
The 100% RDF plus 1% MgSO4 spray minimized leaf reddening in both cotton types.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- 1% MgSO 4e0
- Outcome
- intensity of reddeninge0
- Direction
- minimume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The minimum intensity of reddening in Bt and non-Bt cotton was observed in 100 % RDF + foliar sprays with 1% KNO 3 / 1% MgSO 4 / 2% DAP”
Claim · model-written summary
The 100% RDF plus 2% DAP spray minimized leaf reddening in both cotton types.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- 2% DAPe0
- Outcome
- intensity of reddeninge0
- Direction
- minimume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The minimum intensity of reddening in Bt and non-Bt cotton was observed in 100 % RDF + foliar sprays with 1% KNO 3 / 1% MgSO 4 / 2% DAP”
Claim · model-written summary
The authors infer nitrogen and potassium applications help control reddening at boll development.
- Taxon
- cottonGossypium hirsutume0
- Organ / stage
- boll development stagee0
- Treatment
- application of nitrogen and potassiume0
- Outcome
- controlling the reddeninge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at boll development stage the application of nitrogen and potassium were helpful for controlling the reddening in Bt and non-Bt cotton”
Claim · model-written summary
The 100% RDF plus 1% MgSO4 spray gave the highest chlorophyll content.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- 100 % RDF + 1 % MgSO 4 spraye0
- Outcome
- content of chlorophylle0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the application of 100 % RDF + 1 % MgSO 4 spray was found to be the best for highest content of chlorophyll as well as yield of Bt and non-Bt cotton hybrids”
Claim · model-written summary
The 100% RDF plus 1% MgSO4 spray gave the highest yield.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- 100 % RDF + 1 % MgSO 4 spraye0
- Outcome
- yielde0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the application of 100 % RDF + 1 % MgSO 4 spray was found to be the best for highest content of chlorophyll as well as yield of Bt and non-Bt cotton hybrids”
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