Abstract
Field studies were conducted (2002-03 to 2004-05) in Nagpur, Maharashtra under rainfed conditions to evaluate the response of upland cotton (Gossypium hirsutum L.) to foliar application of potassium (K). Treatments included a control (without K), soil application, soil application along with one foliar spray of K at either early boll or peak boll and two sprays at early and peak boll stages. Averaged across years, yield of the K applied plots were similar (0.97 to 1.07 tonnetha) and were significantly greater than the control (0.81 tonnetha). Yield differ- ences were owing to more bolls in the K applied (40.8 to 53.3/m2) than control plots (33.6/m2). Year x treatment in- teraction was highly significant. In 2002-03 and 2004-05, rainfall was lesser than average and the K applied plots had significantly greater seed cotton yield (0.84 to 1.30 tonnetha) than the control (0.71 to 0.75 tonnetha). In 2004-05, treatment with 2 foliar sprays produced 392 kgtha more seed cotton than soil application and was sig- nificantly superior to 1 spray. Total K uptake was greater in the K applied plots (61.3 to 68.8 kgtha) than the con- trol (39.1 kglha). Regardless of treatments, K balance (input - uptake) was negative (-37.1 to -43.8 kgtha). In gen- eral, K application did not impact fibre quality. It was found that K application may be advantageous in years with low rainfall.
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Claims 10
Claim · model-written summary
Averaged across years, K-applied cotton plots yielded 0.97 to 1.07 t/ha, significantly greater than the control (0.81 t/ha).
Verbatim
e0“Field studies were conducted (2002-03 to 2004-05) in Nagpur, Maharashtra under rainfed conditions to evaluate the response of upland cotton (Gossypium hirsutum L.) to foliar application of potassium (K)”
e1“Averaged across years, yield of the K applied plots were similar (0.97 to 1.07 tonnetha) and were significantly greater than the control (0.81 tonnetha)”
Claim · model-written summary
K-applied cotton plots had more bolls per square metre than control plots.
Verbatim
e0“Field studies were conducted (2002-03 to 2004-05) in Nagpur, Maharashtra under rainfed conditions to evaluate the response of upland cotton (Gossypium hirsutum L.) to foliar application of potassium (K)”
e2“more bolls in the K applied (40.8 to 53.3/m2) than control plots (33.6/m2)”
Claim · model-written summary
The year by treatment interaction for cotton yield was highly significant.
Verbatim
e0“Field studies were conducted (2002-03 to 2004-05) in Nagpur, Maharashtra under rainfed conditions to evaluate the response of upland cotton (Gossypium hirsutum L.) to foliar application of potassium (K)”
e3“Year x treatment in- teraction was highly significant”
Claim · model-written summary
In dry years (2002-03 and 2004-05), K-applied plots had significantly greater seed cotton yield (0.84 to 1.30 t/ha) than the control (0.71 to 0.75 t/ha).
Verbatim
e0“Field studies were conducted (2002-03 to 2004-05) in Nagpur, Maharashtra under rainfed conditions to evaluate the response of upland cotton (Gossypium hirsutum L.) to foliar application of potassium (K)”
e4“In 2002-03 and 2004-05, rainfall was lesser than average and the K applied plots had significantly greater seed cotton yield (0.84 to 1.30 tonnetha) than the control (0.71 to 0.75 tonnetha)”
Claim · model-written summary
Two foliar sprays in 2004-05 produced 392 kg/ha more seed cotton than soil application.
Verbatim
e0“Field studies were conducted (2002-03 to 2004-05) in Nagpur, Maharashtra under rainfed conditions to evaluate the response of upland cotton (Gossypium hirsutum L.) to foliar application of potassium (K)”
e1“In 2004-05, treatment with 2 foliar sprays produced 392 kgtha more seed cotton than soil application”
Claim · model-written summary
In 2004-05, two foliar sprays were significantly superior to one spray for seed cotton yield.
Verbatim
e0“Field studies were conducted (2002-03 to 2004-05) in Nagpur, Maharashtra under rainfed conditions to evaluate the response of upland cotton (Gossypium hirsutum L.) to foliar application of potassium (K)”
e1“In 2004-05, treatment with 2 foliar sprays produced 392 kgtha more seed cotton than soil application”
e2“superior to 1 spray”
Claim · model-written summary
Total K uptake was greater in K-applied plots (61.3 to 68.8 kg/ha) than in the control (39.1 kg/ha).
Verbatim
e0“Field studies were conducted (2002-03 to 2004-05) in Nagpur, Maharashtra under rainfed conditions to evaluate the response of upland cotton (Gossypium hirsutum L.) to foliar application of potassium (K)”
e1“Total K uptake was greater in the K applied plots (61.3 to 68.8 kgtha)”
e2“than the con- trol (39.1 kglha)”
Claim · model-written summary
The K balance (input minus uptake) was negative, at -37.1 to -43.8 kg/ha, regardless of treatment.
Verbatim
e0“Field studies were conducted (2002-03 to 2004-05) in Nagpur, Maharashtra under rainfed conditions to evaluate the response of upland cotton (Gossypium hirsutum L.) to foliar application of potassium (K)”
e1“Regardless of treatments, K balance (input - uptake) was negative (-37.1 to -43.8 kgtha)”
Claim · model-written summary
K application did not impact cotton fibre quality.
- Taxon
- upland cottone0
- Treatment
- K applicatione1
- Outcome
- fibre qualitye1
- Direction
- did not impacte1
- Setting
- Nagpur, Maharashtra under rainfed conditionse0
Not reportedComparator
Verbatim
e0“Field studies were conducted (2002-03 to 2004-05) in Nagpur, Maharashtra under rainfed conditions to evaluate the response of upland cotton (Gossypium hirsutum L.) to foliar application of potassium (K)”
e1“K application did not impact fibre quality”
Claim · model-written summary
The authors conclude that K application may be advantageous for cotton in years with low rainfall.
Verbatim
e0“Field studies were conducted (2002-03 to 2004-05) in Nagpur, Maharashtra under rainfed conditions to evaluate the response of upland cotton (Gossypium hirsutum L.) to foliar application of potassium (K)”
e1“K application may be advantageous in years with low rainfall”
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potassium · quality: grain · Gossypium hirsutum (cotton)Results differ
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See all 23 papers →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.