Paper · 2020 · International Journal of Chemical Studies

Evaluation of split application of nitrogen and potassium on semi-dry rice cultivation in Ramanathapuram, Tamil Nadu

R Jeyasrinivas; S Sakthivel; P Yogameenakshi

5
claims
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verbatim quotes
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citations
1
research areas
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Open access

Abstract

A field experiment was conducted during rainy (Rabi) season during 2014, 2015 and 2016 at Agricultural Research station, Paramakudi to evaluate the split application of nitrogen and potassium in semi-dry rice cultivation in Ramanathapuram district. The experiment was laid out in split plot design with three replications with Anna(R) 4, ADT 45 and Norungan local varieties. The sub plot consists five levels nutrients; the results revealed that the short duration rice variety Anna (R) 4 is suitable for semi-dry rice cultivation (2298kg ha-1) under drought conditions of Ramanathapuram district. Application of entire dose of P with 1/4th dose of N and 1/4th dose of K as basal application and remaining dose of N and K in three splits on vegetative, active tillering and panicle initiation stages recorded the good performance of plant growth (83.5 cm) and yield attributes viz., productive tillers/m2(147.1) and grains/ panicle (118.8). It will ultimately increase the grain yield (2652 kg ha-1) in semi-dry rice cultivation.

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Claims 5

Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Anna (R) 4 was suitable for semi-dry rice cultivation under drought, yielding 2298kg ha-1.

Material
Anna (R) 4e0
Outcome
semi-dry rice cultivatione0
Value
2298kg ha-1e0
Setting
Ramanathapuram districte0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“the short duration rice variety Anna (R) 4 is suitable for semi-dry rice cultivation (2298kg ha-1) under drought conditions of Ramanathapuram district.”

✓ located verbatim in the source · abstract, characters 446–597 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Split nitrogen and potassium application produced plant growth of 83.5 cm.

Treatment
Application of entire dose of P with 1/4th dose of N and 1/4th dose of K as basal application and remaining dose of N and K in three splits on vegetative, active tillering and panicle initiation stagese0
Outcome
plant growthe0
Direction
good performancee0
Value
83.5 cme0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Application of entire dose of P with 1/4th dose of N and 1/4th dose of K as basal application and remaining dose of N and K in three splits on vegetative, active tillering and panicle initiation stages recorded the good performance of plant growth (83.5 cm)”

✓ located verbatim in the source · abstract, characters 598–855 · show in text ↑
t0

“rice”

✓ located verbatim in the source · title, characters 70–74 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

The split nutrient schedule yielded 147.1 productive tillers per square meter.

Treatment
split application of nitrogen and potassiumt0
Outcome
productive tillers/m2e0
Value
147.1e0

Not reportedComparatorDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“productive tillers/m2(147.1)”

✓ located verbatim in the source · abstract, characters 883–911 · show in text ↑
t0

“split application of nitrogen and potassium on semi-dry rice”

✓ located verbatim in the source · title, characters 14–74 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

The split nutrient schedule yielded 118.8 grains per panicle.

Treatment
split application of nitrogen and potassiumt0
Outcome
grains/ paniclee0
Value
118.8e0

Not reportedComparatorDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“grains/ panicle (118.8)”

✓ located verbatim in the source · abstract, characters 916–939 · show in text ↑
t0

“split application of nitrogen and potassium on semi-dry rice”

✓ located verbatim in the source · title, characters 14–74 · show in text ↑
Intervention effectauthor interpretationoriginal resultpositivemeasured

Claim · model-written summary

The split nutrient schedule increased grain yield to 2652 kg ha-1.

Treatment
split application of nitrogen and potassiumt0
Outcome
grain yielde0
Direction
increasee0
Value
2652 kg ha-1e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“It will ultimately increase the grain yield (2652 kg ha-1) in semi-dry rice cultivation.”

✓ located verbatim in the source · abstract, characters 941–1029 · show in text ↑
t0

“split application of nitrogen and potassium on semi-dry rice”

✓ located verbatim in the source · title, characters 14–74 · show in text ↑

potassium · growth · Oryza sativa (rice)Positive and negative results

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tillage · growth · Oryza sativa (rice)Positive and negative results

149 papers: 116 positive, 33 negative or no effect

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potassium · yield · Oryza sativa (rice)Positive and negative results

383 papers: 344 positive, 39 negative or no effect

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nitrogen · growth · Oryza sativa (rice)Positive and negative results

511 papers: 402 positive, 109 negative or no effect

401 papers in the same direction as this paper · 101 in the opposite direction · 8 reporting no difference from an alternative

  1. negative
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nitrogen · yield · Oryza sativa (rice)Positive and negative results

2,045 papers: 1,803 positive, 242 negative or no effect

1,802 papers in the same direction as this paper · 193 in the opposite direction · 49 reporting no difference from an alternative

  1. negative
  2. negative
  3. negative

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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.