Abstract
The mobility of applied nutrients in soil and root growth determines the interception and uptake of nutrients by crop. Present investigation includes two pot culture experiments under glass house condition. The objective of first experiment was to study the mobility of N, P and K in soil profile of cotton in respect to different NPK levels; whereas, in second experiment root growth of Bt and non-Bt cotton hybrids were studied under different NPK levels. The first experiment comprised of four NPK levels, i.e. control- 00:00:00, 50:25:25, 62.5:31.25:31.25 and 75:37.5:37.5 kg N, P2 O5 , K2 O ha-1 and four depth of sampling, i.e. 15, 30, 45 and 60 cm in soil column. Whereas, in second experiment Bt and non-Bt counterpart of same cotton hybrid were evaluated for root growth under above mention NPK levels. Both the experiments consist of four set of replications and experimental design was FRBD. Results illustrate that, concentration of available N, P and K in soil profile of cotton significantly increased with the highest rate of NPK than control. Irrespective of NPK levels, shallow depth of sampling (15 cm) recorded maximum concentration of available N, P and K throughout the period of experimentation. However, N was mobile up to 60 cm depth and K up to 45 cm depth in 90 days; whereas P mobility was restricted only up to 15 cm depth even in 90 days. Each increase in NPK level increased the downward mobility of N in soil by 15 cm at 30 days after fertilizer application. The increased in available P content with increase in NPK levels remains restricted to placement zone (15 cm) only and its downward mobility in soil profile over the period in response to NPK levels was absent. However, K was found mobile up to 45 cm depth under highest level of NPK at 30 days after fertilizer application. As regards root growth, Bt hybrid recorded longest root at initial stage whereas, at later stage it was in non-Bt. Application of the highest rate of NPK significantly increased root length over lower levels.
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Claims 11
Claim · model-written summary
Highest NPK increased available soil nitrogen, phosphorus and potassium concentrations over control.
- Taxon
- cotton
Gossypium hirsutume0 - Treatment
- highest rate of NPKe0
- Outcome
- concentration of available N, P and K in soil profilee0
- Direction
- increasede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“concentration of available N, P and K in soil profile of cotton significantly increased with the highest rate of NPK than control”
e1“concentration of available N, P and K in soil profile of cotton significantly increased with the highest rate of NPK than control”
Claim · model-written summary
Shallow 15 cm depth had maximum available N, P, and K concentration.
- Taxon
- cottonGossypium hirsutumt0
- Outcome
- concentration of available N, P and Ke0
- Direction
- maximume0
- Value
- 15 cme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“shallow depth of sampling (15 cm) recorded maximum concentration of available N, P and K”
e1“shallow depth of sampling (15 cm) recorded maximum concentration of available N, P and K”
t0“cotton”
t1“cotton”
Claim · model-written summary
Nitrogen moved to 60 cm in 90 days.
- Taxon
- cottonGossypium hirsutumt0
- Outcome
- N was mobilee0
- Value
- 60 cme0
- Qualifier
- 90 dayse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N was mobile up to 60 cm depth and K up to 45 cm depth in 90 days”
e1“N was mobile up to 60 cm depth and K up to 45 cm depth in 90 days”
t0“cotton”
t1“cotton”
Claim · model-written summary
Potassium moved to 45 cm in 90 days.
- Taxon
- cottonGossypium hirsutumt0
- Outcome
- K up to 45 cm depthe0
- Value
- 45 cme0
- Qualifier
- 90 dayse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“K up to 45 cm depth in 90 days”
e1“K up to 45 cm depth in 90 days”
t0“cotton”
t1“cotton”
Claim · model-written summary
Phosphorus mobility was limited to 15 cm after 90 days.
- Taxon
- cottonGossypium hirsutumt0
- Outcome
- P mobilitye0
- Direction
- restrictede0
- Value
- 15 cme0
- Qualifier
- 90 dayse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P mobility was restricted only up to 15 cm depth even in 90 days”
e1“P mobility was restricted only up to 15 cm depth even in 90 days”
t0“cotton”
t1“cotton”
Claim · model-written summary
Each NPK increase increased downward nitrogen mobility by 15 cm at 30 days.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- NPK levele0
- Outcome
- downward mobility of N in soile0
- Direction
- increasede0
- Value
- 15 cme0
- Qualifier
- 30 days after fertilizer applicatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Each increase in NPK level increased the downward mobility of N in soil by 15 cm at 30 days after fertilizer application”
e1“Each increase in NPK level increased the downward mobility of N in soil by 15 cm at 30 days after fertilizer application”
t0“cotton”
t1“cotton”
Claim · model-written summary
Increased NPK raised soil available phosphorus only within the placement zone.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- NPK levelse0
- Outcome
- available P contente0
- Direction
- increasede0
- Qualifier
- placement zone (15 cm) onlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased in available P content with increase in NPK levels remains restricted to placement zone (15 cm) only”
e1“increased in available P content with increase in NPK levels remains restricted to placement zone (15 cm) only”
t0“cotton”
t1“cotton”
Claim · model-written summary
Phosphorus did not move down the soil profile in response to NPK levels.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- NPK levelse0
- Outcome
- downward mobility in soil profilee0
- Direction
- absente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“its downward mobility in soil profile over the period in response to NPK levels was absent”
e1“its downward mobility in soil profile over the period in response to NPK levels was absent”
t0“cotton”
t1“cotton”
Claim · model-written summary
At highest NPK, potassium moved to 45 cm by day 30.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- highest level of NPKe0
- Outcome
- K was found mobilee0
- Value
- 45 cme0
- Qualifier
- 30 days after fertilizer applicatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“K was found mobile up to 45 cm depth under highest level of NPK at 30 days after fertilizer application”
e1“K was found mobile up to 45 cm depth under highest level of NPK at 30 days after fertilizer application”
t0“cotton”
t1“cotton”
Claim · model-written summary
Bt cotton had longer initial roots than non-Bt, which had longer roots later.
- Taxon
- cottonGossypium hirsutumt0
- Material
- Bt hybride0
- Outcome
- longest roote0
- Direction
- longeste0
- Qualifier
- initial stagee0
- Comparator
- non-Bte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bt hybrid recorded longest root at initial stage whereas, at later stage it was in non-Bt”
e1“Bt hybrid recorded longest root at initial stage whereas, at later stage it was in non-Bt”
t0“cotton”
t1“cotton”
Claim · model-written summary
Highest NPK significantly increased cotton root length over lower levels.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- highest rate of NPKe0
- Outcome
- root lengthe0
- Direction
- increasede0
- Comparator
- lower levelse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of the highest rate of NPK significantly increased root length over lower levels”
e1“Application of the highest rate of NPK significantly increased root length over lower levels”
t0“cotton”
t1“cotton”
The same questions in other papers
fertilization · nutrient: content · Gossypium hirsutum (cotton)Positive and negative results
120 papers in the same direction as this paper · 9 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- no effect
- no effect
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See all 131 papers →fertilization · growth · Gossypium hirsutum (cotton)Positive and negative results
176 papers in the same direction as this paper · 23 in the opposite direction · 2 reporting no difference from an alternative
- no effect
- positive
- positive
198 papers more in this group
See all 202 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.