Abstract
There is a lack of sufficient information on cotton responses to time and amount of foliar application of potassium (K) under salt stress environment, The objective of this study was to investigate the effects of potassium (as Solupotasse 50% K2O and 18% S) rate and application time on yield and yield components of cotton under saline field condition. A factorial experiment based on randomized complete block design with three replications was conducted in Sabzevar Agriculture and Natural Resources Research center in 2015. Factors were: K rate (0, 1, 2 and 3%) and K foliar application time (at early flowering, at peak boll formation and at early flowering + peak boll formation). Increasing of K concentration to 3% increased plant height, sympodial branch number, boll number, boll weight, seed cotton yield and lint yield. Lint percent was not affected by potassium concentration. The highest boll number and lint yield was obtained when potassium spraying at early flowering stage whereas foliar application at peak boll formation had the highest plant height and boll weight. The maximum seed cotton yield was obtained at K application twice at early flowering + peak boll formation. The results obtained here suggest that 3% K application (as Solupotasse) at early flowering + peak boll formation stage can improve the seed cotton yield grown under salt stress environment.
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Claims 7
Claim · model-written summary
Increasing potassium to 3% increased plant height, sympodial branches and boll number.
- Taxon
- Cotton
Gossypium hirsutumt0 - Treatment
- K concentration to 3%e0
- Outcome
- plant height, sympodial branch number, boll numbere0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing of K concentration to 3% increased plant height, sympodial branch number, boll number”
t0“Cotton”
Claim · model-written summary
Increasing potassium to 3% increased boll weight, seed cotton yield and lint yield.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- K concentration to 3%e0
- Outcome
- boll weight, seed cotton yield and lint yielde0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing of K concentration to 3% increased plant height, sympodial branch number, boll number, boll weight, seed cotton yield and lint yield”
t0“Cotton”
Claim · model-written summary
Potassium concentration did not affect lint percent.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- potassium concentratione0
- Outcome
- Lint percente0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lint percent was not affected by potassium concentration”
t0“Cotton”
Claim · model-written summary
Early flowering application gave the highest boll number and lint yield.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- potassium spraying at early flowering stagee0
- Outcome
- boll number and lint yielde0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest boll number and lint yield was obtained when potassium spraying at early flowering stage”
t0“Cotton”
Claim · model-written summary
Peak boll formation application gave the highest plant height and boll weight.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- foliar application at peak boll formatione0
- Outcome
- plant height and boll weighte0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“foliar application at peak boll formation had the highest plant height and boll weight”
t0“Cotton”
Claim · model-written summary
Twice applied potassium produced maximum seed cotton yield.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- K application twice at early flowering + peak boll formatione0
- Outcome
- seed cotton yielde0
- Direction
- maximume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The maximum seed cotton yield was obtained at K application twice at early flowering + peak boll formation”
t0“Cotton”
Claim · model-written summary
The authors recommend 3% potassium twice under salt stress to improve seed cotton yield.
- Taxon
- CottonGossypium hirsutumt0
- Outcome
- 3% K application (as Solupotasse) at early flowering + peak boll formation stagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“3% K application (as Solupotasse) at early flowering + peak boll formation stage can improve the seed cotton yield grown under salt stress environment”
t0“Cotton”
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