Abstract
A nutrient omission plot technique (NOPT) study in RCBD with 8 treatments (omission (-) of N, P, K, NP, NK, PK and no nutrient omission)and 3 replicates per treatment was made on rice at Port Blair, Andaman and Nicobar Islands during kharif 2015 to ascertain yield response and find out the most crucial nutrient for fertilization.The results revealed that yield response to fertilizers (NPK) was 2.63 t / ha (60.74%). The yield response of P (23.3 %) got multiplied by 2.16 and 2.60 times when combined with N and K applications as compared to their individual effects. Indigenous N, P and K supply capacity of the soil was estimated as 70.6, 10.0 and 80.0 kg/ha. Agronomic efficiency (kg grain / kg nutrient applied) was severely limited by P omission (10.13). The economics(Rs/ha) of rice cultivation indicates that omission of NPK & NP fertilizers results in losses. The highest profits realized with no omission (+NPK) were reduced by 52.3% with P omission. Omission of K followed by N and NK has less impact on profits. Rice crop duration got prolonged and shortened under P and N omission while K omission has no such effect.
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Claims 17
Claim · model-written summary
NPK fertilizer produced a rice yield response of 2.63 t / ha, or 60.74%.
- Taxon
- rice
Oryza sativat0 - Treatment
- fertilizers (NPK)e0
- Outcome
- yield responsee0
- Value
- 2.63 t / hae0
- Qualifier
- 60.74%e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“yield response to fertilizers (NPK) was 2.63 t / ha (60.74%)”
t0“rice (Oryza sativa L.)”
Claim · model-written summary
P yield response was 23.3%.
- Taxon
- riceOryza sativat0
- Outcome
- yield response of Pe0
- Value
- 23.3 %e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield response of P (23.3 %)”
t0“rice (Oryza sativa L.)”
Claim · model-written summary
Adding N to P multiplied the P yield response 2.16 times.
- Taxon
- riceOryza sativat0
- Treatment
- combined with Ne0
- Outcome
- yield response of Pe0
- Direction
- multipliede0
- Value
- 2.16e0
- Comparator
- their individual effectse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield response of P (23.3 %) got multiplied by 2.16 and 2.60 times when combined with N and K applications as compared to their individual effects”
t0“rice (Oryza sativa L.)”
Claim · model-written summary
Adding K to P multiplied the P yield response 2.60 times.
- Taxon
- riceOryza sativat0
- Treatment
- K applicationse0
- Outcome
- yield response of Pe0
- Direction
- multipliede0
- Value
- 2.60 timese0
- Comparator
- their individual effectse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield response of P (23.3 %) got multiplied by 2.16 and 2.60 times when combined with N and K applications as compared to their individual effects”
t0“rice (Oryza sativa L.)”
Claim · model-written summary
Estimated indigenous soil N supply was 70.6 kg/ha.
- Taxon
- riceOryza sativat0
- Outcome
- Ne0
- Value
- 70.6e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Indigenous N, P and K supply capacity of the soil was estimated as 70.6, 10.0 and 80.0 kg/ha”
t0“rice (Oryza sativa L.)”
Claim · model-written summary
Estimated indigenous soil P supply was 10.0 kg/ha.
- Taxon
- riceOryza sativat0
- Outcome
- Pe0
- Value
- 10.0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Indigenous N, P and K supply capacity of the soil was estimated as 70.6, 10.0 and 80.0 kg/ha”
t0“rice (Oryza sativa L.)”
Claim · model-written summary
Estimated indigenous soil K supply was 80.0 kg/ha.
- Taxon
- riceOryza sativat0
- Outcome
- K supply capacity of the soile0
- Value
- 80.0 kg/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Indigenous N, P and K supply capacity of the soil was estimated as 70.6, 10.0 and 80.0 kg/ha”
t0“rice (Oryza sativa L.)”
Claim · model-written summary
P omission severely limited agronomic efficiency to 10.13 kg grain per kg nutrient.
- Taxon
- riceOryza sativat0
- Treatment
- P omissione0
- Outcome
- Agronomic efficiencye0
- Direction
- limitede0
- Value
- 10.13e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Agronomic efficiency (kg grain / kg nutrient applied) was severely limited by P omission (10.13)”
t0“rice (Oryza sativa L.)”
Claim · model-written summary
Omitting NPK resulted in rice cultivation losses.
- Taxon
- riceOryza sativat0
- Treatment
- omission of NPKe0
- Outcome
- lossese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“omission of NPK & NP fertilizers results in losses”
t0“rice (Oryza sativa L.)”
Claim · model-written summary
Omitting NP resulted in rice cultivation losses.
- Taxon
- riceOryza sativat0
- Treatment
- NP fertilizerse0
- Outcome
- lossese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“omission of NPK & NP fertilizers results in losses”
t0“rice (Oryza sativa L.)”
Claim · model-written summary
P omission reduced profits by 52.3% relative to no omission.
- Taxon
- riceOryza sativat0
- Treatment
- P omissione0
- Outcome
- profitse0
- Direction
- reducede0
- Value
- 52.3%e0
- Comparator
- no omission (+NPK)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest profits realized with no omission (+NPK) were reduced by 52.3% with P omission”
t0“rice (Oryza sativa L.)”
Claim · model-written summary
Omitting K had less impact on profits.
- Taxon
- riceOryza sativat0
- Treatment
- Omission of Ke0
- Outcome
- profitse0
- Direction
- lesse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Omission of K followed by N and NK has less impact on profits”
t0“rice (Oryza sativa L.)”
Claim · model-written summary
Omitting N had less impact on profits.
- Taxon
- riceOryza sativat0
- Treatment
- Ne0
- Outcome
- profitse0
- Direction
- lesse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Omission of K followed by N and NK has less impact on profits”
t0“rice (Oryza sativa L.)”
Claim · model-written summary
Omitting NK had less impact on profits.
- Taxon
- riceOryza sativat0
- Treatment
- NKe0
- Outcome
- profitse0
- Direction
- lesse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Omission of K followed by N and NK has less impact on profits”
t0“rice (Oryza sativa L.)”
Claim · model-written summary
P omission prolonged rice crop duration.
- Taxon
- RiceOryza sativae0
- Treatment
- Pe0
- Outcome
- crop duratione0
- Direction
- prolongede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rice crop duration got prolonged and shortened under P and N omission while K omission has no such effect”
Claim · model-written summary
N omission shortened rice crop duration.
- Taxon
- RiceOryza sativae0
- Treatment
- N omissione0
- Outcome
- crop duratione0
- Direction
- shortenede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rice crop duration got prolonged and shortened under P and N omission while K omission has no such effect”
Claim · model-written summary
K omission had no effect on rice crop duration.
- Taxon
- RiceOryza sativae0
- Treatment
- K omissione0
- Outcome
- crop duratione0
- Direction
- no such effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rice crop duration got prolonged and shortened under P and N omission while K omission has no such effect”
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