Abstract
A field experiment was conducted during the rainy season (kharifJ of 1991 and 1992 to study the effectiveness of foliar fertilization using different phosphate carriers. viz single superphosphate, diammonium phosphate, and the granular, liquid, zincated as well as potash-enriched ammonium polyphosphate, on 'JKHY 1' hybrid upland cotton (Gossypium hirsutum L.) under rainfed condition. The foliar absorption continued till 72-96 hr after spraying, The P absorption with single superphosphate was only half of that with diammonium phosphate of polyphosphate (except zincated ammonium polyphosphate). Out of the P applied as liquid ammonium polyphosphate or diammonium phosphate. 75-80% was absorbed within 96 hr after the first spray, but the absorption pattern was different; the initial rate being faster with diammonium phosphate. Application of 6% of the nitrogen and 25% of the total recommended dose of phosphorus through foliar spray of ammonium polyphosphate increased the seed-cotton yield hy 14-18%. nitrogen uptake by 12-14%, phosphate uptake by 24-28% and apparent recovery or N and P by 17-18%, but did not improve the nutrient-utilization efficiency.
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Claims 9
Claim · model-written summary
Foliar absorption continued until 72–96 hours after spraying.
Verbatim
e0“The foliar absorption continued till 72-96 hr after spraying”
t0“upland cotton (Gossypium hirsutum)”
Claim · model-written summary
P absorption from single superphosphate was half that from diammonium phosphate or most polyphosphates.
Verbatim
e0“The P absorption with single superphosphate was only half of that with diammonium phosphate of polyphosphate (except zincated ammonium polyphosphate)”
t0“upland cotton (Gossypium hirsutum)”
Claim · model-written summary
Liquid ammonium polyphosphate achieved 75–80% P absorption within 96 hours after first spray.
Verbatim
e0“Out of the P applied as liquid ammonium polyphosphate or diammonium phosphate. 75-80% was absorbed within 96 hr after the first spray”
t0“upland cotton (Gossypium hirsutum)”
Claim · model-written summary
Diammonium phosphate achieved 75–80% P absorption within 96 hours and had the faster initial rate.
Verbatim
e0“Out of the P applied as liquid ammonium polyphosphate or diammonium phosphate. 75-80% was absorbed within 96 hr after the first spray, but the absorption pattern was different; the initial rate being faster with diammonium phosphate”
t0“upland cotton (Gossypium hirsutum)”
Claim · model-written summary
Foliar ammonium polyphosphate increased seed cotton yield by 14–18%.
- Taxon
- upland cottont0
- Treatment
- 6% of the nitrogen and 25% of the total recommended dose of phosphorus through foliar spray of ammonium polyphosphatee0
- Outcome
- seed-cotton yielde0
- Direction
- increasede0
- Value
- 14-18%e0
Not reportedComparator
Verbatim
e0“Application of 6% of the nitrogen and 25% of the total recommended dose of phosphorus through foliar spray of ammonium polyphosphate increased the seed-cotton yield hy 14-18%”
t0“upland cotton (Gossypium hirsutum)”
Claim · model-written summary
The foliar treatment increased nitrogen uptake by 12–14%.
- Taxon
- upland cottont0
- Treatment
- foliar spray of ammonium polyphosphatee0
- Outcome
- nitrogen uptakee0
- Direction
- increasede0
- Value
- 12-14%e0
Not reportedComparator
Verbatim
e0“Application of 6% of the nitrogen and 25% of the total recommended dose of phosphorus through foliar spray of ammonium polyphosphate increased the seed-cotton yield hy 14-18%. nitrogen uptake by 12-14%”
t0“upland cotton (Gossypium hirsutum)”
Claim · model-written summary
The foliar treatment increased phosphate uptake by 24–28%.
- Taxon
- upland cottont0
- Treatment
- foliar spray of ammonium polyphosphatee0
- Outcome
- phosphate uptakee0
- Direction
- increasede0
- Value
- 24-28%e0
Not reportedComparator
Verbatim
e0“Application of 6% of the nitrogen and 25% of the total recommended dose of phosphorus through foliar spray of ammonium polyphosphate increased the seed-cotton yield hy 14-18%. nitrogen uptake by 12-14%, phosphate uptake by 24-28%”
t0“upland cotton (Gossypium hirsutum)”
Claim · model-written summary
The foliar treatment increased apparent recovery of N and P by 17–18%.
- Taxon
- upland cottont0
- Treatment
- foliar spray of ammonium polyphosphatee0
- Outcome
- apparent recovery or N and Pe0
- Direction
- increasede0
- Value
- 17-18%e0
Not reportedComparator
Verbatim
e0“Application of 6% of the nitrogen and 25% of the total recommended dose of phosphorus through foliar spray of ammonium polyphosphate increased the seed-cotton yield hy 14-18%. nitrogen uptake by 12-14%, phosphate uptake by 24-28% and apparent recovery or N and P by 17-18%”
t0“upland cotton (Gossypium hirsutum)”
Claim · model-written summary
The foliar treatment did not improve nutrient utilization efficiency.
- Taxon
- upland cottont0
- Treatment
- foliar spray of ammonium polyphosphatee0
- Outcome
- nutrient-utilization efficiencye0
- Direction
- did not improvee0
Not reportedComparator
Verbatim
e0“foliar spray of ammonium polyphosphate increased the seed-cotton yield hy 14-18%. nitrogen uptake by 12-14%, phosphate uptake by 24-28% and apparent recovery or N and P by 17-18%, but did not improve the nutrient-utilization efficiency”
t0“upland cotton (Gossypium hirsutum)”
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