Abstract
Long term crop nutrient removal is leading to decline in available phosphorus (P) in Vertisols. To improve the efficiency of P fertilizer applied for cotton production it is important to understand its interaction with other applied nutrients, particularly nitrogen (N). Four experiments were conducted to investigate the cotton lint yield response to applied P fertilizer (dispersed throughout the beds) under (i) three different N rates, (ii) various split-N application timing treatments, (iii) additional late N application and (iv) two water-run urea application strategies. Cotton lint yield response to applied P fertilizer was influenced by split-N application ratio and timing, but not N rates or water run N strategies. Additional late N application reduced lint yield and P response. Applying all the N fertilizer pre-plant along with P increased cotton lint yield by 37.2% (with 32.5% greater seed yield), compared with applying P before planting and all N fertilizer in-crop. Phosphorus application improved lint turnout by increasing cotton lint and reducing trash. These results indicate improved agronomic efficiency of applied P fertilizer dispersed throughout the beds can be possible by supplying crops with optimum N earlier in the season. The P dispersion throughout the plant beds potentially improved the P acquisition by cotton roots—where more N was applied pre-plant than in-crop. Future research needs to focus on greater understanding of the N-priming effect on cotton root growth and its impact on response to applied P.
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Claims 11
Claim · model-written summary
Cotton lint yield response to applied P fertilizer was influenced by split-N application ratio and timing.
- Taxon
- Cotton
Gossypium hirsutume1 - Treatment
- split-N application ratio and timinge1
- Outcome
- lint yield response to applied P fertilizere1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Cotton lint yield response to applied P fertilizer was influenced by split-N application ratio and timing, but not N rates or water run N strategies”
Claim · model-written summary
Cotton lint yield response to applied P fertilizer was not influenced by N rates.
- Taxon
- CottonGossypium hirsutume1
- Treatment
- N ratese1
- Outcome
- lint yield response to applied P fertilizere1
- Direction
- no_changeinferrede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Cotton lint yield response to applied P fertilizer was influenced by split-N application ratio and timing, but not N rates or water run N strategies”
Claim · model-written summary
Cotton lint yield response to applied P fertilizer was not influenced by water-run N strategies.
- Taxon
- CottonGossypium hirsutume1
- Treatment
- water run N strategiese1
- Outcome
- lint yield response to applied P fertilizere1
- Direction
- no_changeinferrede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Cotton lint yield response to applied P fertilizer was influenced by split-N application ratio and timing, but not N rates or water run N strategies”
Claim · model-written summary
Applying all N fertilizer pre-plant along with P increased cotton lint yield by 37.2% compared with applying P before planting and all N fertilizer in-crop.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- Applying all the N fertilizer pre-plant along with Pe1
- Outcome
- cotton lint yielde1
- Direction
- increasede1
- Value
- 37.2%e1
- Comparator
- applying P before planting and all N fertilizer in-crope1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Applying all the N fertilizer pre-plant along with P increased cotton lint yield by 37.2% (with 32.5% greater seed yield), compared with applying P before planting and all N fertilizer in-crop”
Claim · model-written summary
Applying all N fertilizer pre-plant along with P gave 32.5% greater seed yield than applying P before planting and all N fertilizer in-crop.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- Applying all the N fertilizer pre-plant along with Pe1
- Outcome
- seed yielde1
- Direction
- greatere1
- Value
- 32.5%e1
- Comparator
- applying P before planting and all N fertilizer in-crope1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Applying all the N fertilizer pre-plant along with P increased cotton lint yield by 37.2% (with 32.5% greater seed yield), compared with applying P before planting and all N fertilizer in-crop”
Claim · model-written summary
Additional late N application reduced lint yield and P response.
- Taxon
- cottonGossypium hirsutume2
- Treatment
- Additional late N applicatione1
- Outcome
- lint yield and P responsee1
- Direction
- reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Additional late N application reduced lint yield and P response”
e2“To improve the efficiency of P fertilizer applied for cotton production”
Claim · model-written summary
Authors conclude that agronomic efficiency of applied P fertilizer dispersed throughout the beds can be improved by supplying crops with optimum N earlier in the season.
- Taxon
- cottonGossypium hirsutume2
- Treatment
- supplying crops with optimum N earlier in the seasone1
- Outcome
- agronomic efficiency of applied P fertilizere1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“These results indicate improved agronomic efficiency of applied P fertilizer dispersed throughout the beds can be possible by supplying crops with optimum N earlier in the season”
e2“To improve the efficiency of P fertilizer applied for cotton production”
Claim · model-written summary
Phosphorus application improved cotton lint turnout.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- Phosphorus applicatione1
- Outcome
- lint turnoute1
- Direction
- improvede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Phosphorus application improved lint turnout by increasing cotton lint and reducing trash”
Claim · model-written summary
Phosphorus application reduced cotton trash.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- Phosphorus applicatione1
- Outcome
- trashe1
- Direction
- reducinge1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Phosphorus application improved lint turnout by increasing cotton lint and reducing trash”
Claim · model-written summary
Phosphorus application increased cotton lint.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- Phosphorus applicatione1
- Outcome
- cotton linte1
- Direction
- increasinge1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Phosphorus application improved lint turnout by increasing cotton lint and reducing trash”
Claim · model-written summary
Dispersing P throughout the plant beds potentially improved P acquisition by cotton roots.
- Taxon
- cottonGossypium hirsutume1
- Organ / stage
- rootse1
- Treatment
- P dispersion throughout the plant bedse1
- Outcome
- P acquisitione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The P dispersion throughout the plant beds potentially improved the P acquisition by cotton roots”
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