Abstract
This study aimed to evaluate growth and production components of the colored cotton cultivar ‘BRS Topázio’ irrigated with saline water as a function of dose of potassium and proportions of nitrate and ammonium. The study was conducted in drainage lysimeters under greenhouse conditions, in a eutrophic Gray Argisol of sandy clay loam texture, in the municipality of Campina Grande, Brazil, from November 2014 to March 2015. A randomized block design was used to test five doses of potassium-DK (50, 75, 100, 125 and 150% of the recommendation for pot experiments) and five proportions of nitrate and ammonium-PNA (100/0, 75/25, 50/50, 25/75 and 0/100 mg of N kg-1 of soil). The K dose referring to 100% corresponded to 150 mg of K2O kg-1 of soil. N supply in NO3-/NH4+ proportion of 25/75, promoted increase in growth variables (plant height, stem diameter and leaf area) and mass of cotton bolls. The K dose of 145.5 mg of K2O kg-1 of soil promoted the formation of higher number of bolls plant-1. The application of K in the doses of 112.5 and 187.5 mg of K2O combined with 25/75 and 0/100 mg of NO3-/NH4+ promoted increment in cottonseed mass and the dose of 187.5 mg of K2O associated with 25/75 mg of NO3-/NH4+ increased the number of days for flower bud opening. Key words: Gossypium hirsutum L., saline stress, mineral nutrition
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Claims 6
Claim · model-written summary
The 25/75 nitrate/ammonium proportion increased plant height, stem diameter and leaf area.
- Taxon
- cotton
Gossypium hirsutumt0 - Treatment
- NO3-/NH4+ proportion of 25/75e0
- Outcome
- plant height, stem diameter and leaf areae0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N supply in NO3-/NH4+ proportion of 25/75, promoted increase in growth variables (plant height, stem diameter and leaf area)”
t0“Cultivation of colored cotton irrigated with saline water under potassium and nitrate/ammonium fertilization”
Claim · model-written summary
The 25/75 nitrate/ammonium proportion increased cotton boll mass.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- NO3-/NH4+ proportion of 25/75e0
- Outcome
- mass of cotton bollse0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N supply in NO3-/NH4+ proportion of 25/75, promoted increase in growth variables (plant height, stem diameter and leaf area) and mass of cotton bolls”
t0“Cultivation of colored cotton irrigated with saline water under potassium and nitrate/ammonium fertilization”
Claim · model-written summary
Potassium at 145.5 mg K2O kg-1 soil increased boll number.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- 145.5 mg of K2O kg-1 of soile0
- Outcome
- number of bolls plant-1e0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The K dose of 145.5 mg of K2O kg-1 of soil promoted the formation of higher number of bolls plant-1”
t0“Cultivation of colored cotton irrigated with saline water under potassium and nitrate/ammonium fertilization”
Claim · model-written summary
The 112.5 mg K2O dose with 25/75 nitrate/ammonium increased cottonseed mass.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- 112.5e0
- Outcome
- cottonseed masse0
- Direction
- incremente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The application of K in the doses of 112.5 and 187.5 mg of K2O combined with 25/75 and 0/100 mg of NO3-/NH4+ promoted increment in cottonseed mass”
t0“Cultivation of colored cotton irrigated with saline water under potassium and nitrate/ammonium fertilization”
Claim · model-written summary
The 187.5 mg K2O dose with 0/100 nitrate/ammonium increased cottonseed mass.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- 187.5 mg of K2Oe0
- Outcome
- cottonseed masse0
- Direction
- incremente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The application of K in the doses of 112.5 and 187.5 mg of K2O combined with 25/75 and 0/100 mg of NO3-/NH4+ promoted increment in cottonseed mass”
t0“Cultivation of colored cotton irrigated with saline water under potassium and nitrate/ammonium fertilization”
Claim · model-written summary
The 187.5 mg K2O dose with 25/75 nitrate/ammonium delayed flower bud opening.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- 187.5 mg of K2O associated with 25/75 mg of NO3-/NH4+e0
- Outcome
- number of days for flower bud openinge0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the dose of 187.5 mg of K2O associated with 25/75 mg of NO3-/NH4+ increased the number of days for flower bud opening”
t0“Cultivation of colored cotton irrigated with saline water under potassium and nitrate/ammonium fertilization”
The same questions in other papers
ammonium · growth · Gossypium hirsutum (cotton)Results agree
1 paper in the same direction as this paper
- positive
potassium · yield · Gossypium hirsutum (cotton)Results differ
85 papers in the same direction as this paper · 11 in the opposite direction
- no effect
- no effect
- no effect
93 papers more in this group
See all 97 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.