Abstract
Slow-release liquid nitrogen fertilizer sources have been around since 1970. However, this technique is not widely used in the field, probably due to the low cost per ton of nitrogen in the solid form. This study aimed to evaluate the combination of the conventional and slow-release nitrogen fertilization on the yield and phenological variables in a narrow-row cotton crop. Treatments consisted of the combination of the nitrogen fertilizer applied as topdressing in solid form (via soil) and pulverized in the liquid form (via urea formaldehyde - UF): 0% of solid N + 0% of liquid N (0S0L); 100% of solid N + 0% of liquid N (100S0L); 75% of solid N + 25% of liquid N (75S25L); 50% of solid N + 50% of liquid N (50S50L); 25% of solid N + 75% of liquid N (25S75L); e 0% of solid N + 100% of liquid N (0S100L). The cotton crop was phenotypically evaluated at 35, 70, and 130 DAE (Days after emergence) and at the harvest time. The variation between the source of the solid nitrogen fertilizer applied to the soil (ammonium nitrate) and the liquid Nitrogen fertilizer applied by spraying (UF) affects the phenology, physiology, and yield components of the narrow-row cotton crop. The highest yield of the narrow-row cotton crop under the experimental conditions was achieved when 25% of the dose of the solid nitrogen fertilizer was applied as topdressing via soil, and 75% of the dose of the slow-release nitrogen fertilizer was sprayed. This technique provides higher profitability of the produced cotton in relation to the conventional application of the N solid fertilizer via soil.
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Claims 3
Claim · model-written summary
The source of solid nitrogen fertilizer affects phenology, physiology and yield components of narrow-row cotton.
- Taxon
- narrow-row cottont0
- Treatment
- source of the solid nitrogen fertilizere1
- Outcome
- phenology, physiology, and yield componentse1
Not reportedDirection
Verbatim
t0“narrow-row cotton”
e1“The variation between the source of the solid nitrogen fertilizer applied to the soil (ammonium nitrate) and the liquid Nitrogen fertilizer applied by spraying (UF) affects the phenology, physiology, and yield components of the narrow-row cotton crop”
Claim · model-written summary
Applying 25% of the solid nitrogen dose as topdressing and spraying 75% of the slow-release nitrogen gave the highest yield of narrow-row cotton under the experimental conditions.
- Taxon
- narrow-row cottone2
- Treatment
- 25% of the dose of the solid nitrogen fertilizer was applied as topdressing via soil, and 75% of the dose of the slow-release nitrogen fertilizer was sprayede2
- Outcome
- yielde2
- Direction
- higheste2
- Setting
- experimental conditionse2
Not reportedComparator
Verbatim
e2“The highest yield of the narrow-row cotton crop under the experimental conditions was achieved when 25% of the dose of the solid nitrogen fertilizer was applied as topdressing via soil, and 75% of the dose of the slow-release nitrogen fertilizer was sprayed”
Claim · model-written summary
Spraying 75% of the slow-release nitrogen dose gave higher cotton profitability than conventional solid nitrogen application via soil.
- Taxon
- cotton
Gossypium hirsutume3 - Treatment
- 75% of the dose of the slow-release nitrogen fertilizer was sprayede2
- Outcome
- profitabilitye3
- Direction
- highere3
- Comparator
- conventional application of the N solid fertilizer via soile3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“The highest yield of the narrow-row cotton crop under the experimental conditions was achieved when 25% of the dose of the solid nitrogen fertilizer was applied as topdressing via soil, and 75% of the dose of the slow-release nitrogen fertilizer was sprayed”
e3“This technique provides higher profitability of the produced cotton in relation to the conventional application of the N solid fertilizer via soil”
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