Paper · 1977 · Madras Agricultural Journal

Effect of Fertilizer Doses and Varietal Variations on Soil Constituents, Nutrient Uptake and Yield of Rice Varieties

GOPALSWAMY A; RAJ D

11
claims
22
verbatim quotes
0
citations
2
research areas
✓
Open access · cc-by

Abstract

Effects of incremental doses of fertilizer were seen in available nitrogen content than in the other constituents. Growth characters were found to increase with increase in nitrogen doses except in number of grains per ear as well as in 1000 grain weight. The dose 200 kg nitrogen/ha has contributed much to increase in grain yield. There appeared to be a gradual increase in uptake of nitrogen, phosphorus and potassium with increase in nitrogen levels. The influence of varietal variation was not seen in soil constituents, but only in growth characters. Jaya and IR. 8 recorded a greater height than Padma. Jaya showed higher number of effective tillers than IR. 8. In ear length and number of grains per ear, IP. 8 surpassed the variety Jaya, but in 1000 grain weight both of them were on par. No varietal variation was seen in uptake of nitrogen. Varieties IR, 8 and Jaya behaved more or less in a similar manner in the matter of uptake of phosphorus and potassium.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗

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Claims 11

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Incremental fertilizer doses affected available soil nitrogen more than other soil constituents.

Treatment
incremental doses of fertilizere0
Outcome
available nitrogen contente0
Comparator
other constituentse0

Not reportedDirection

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

“Effects of incremental doses of fertilizer were seen in available nitrogen content than in the other constituents”

✓ located verbatim in the source · abstract, characters 0–113 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 102–106 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Growth characters increased with nitrogen dose except grains per ear and 1000-grain weight.

Treatment
nitrogen dosese0
Outcome
Growth characterse0
Direction
increasee0
Qualifier
except in number of grains per ear as well as in 1000 grain weighte0

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

“Growth characters were found to increase with increase in nitrogen doses except in number of grains per ear as well as in 1000 grain weight”

✓ located verbatim in the source · abstract, characters 115–254 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 102–106 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The 200 kg nitrogen/ha dose increased grain yield.

Treatment
200 kg nitrogen/hae0
Outcome
grain yielde0
Direction
increasee0

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

“The dose 200 kg nitrogen/ha has contributed much to increase in grain yield”

✓ located verbatim in the source · abstract, characters 256–331 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 102–106 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Nitrogen, phosphorus and potassium uptake increased with nitrogen level.

Treatment
nitrogen levelse0
Outcome
uptake of nitrogen, phosphorus and potassiume0
Direction
gradual increasee0

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

“gradual increase in uptake of nitrogen, phosphorus and potassium with increase in nitrogen levels”

✓ located verbatim in the source · abstract, characters 356–453 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 102–106 · show in text ↑
Observationobservedoriginal resultno effectmeasured

Claim · model-written summary

Variety affected growth characters but showed no variation in soil constituents.

Outcome
soil constituentse0
Direction
not seene0

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 influence of varietal variation was not seen in soil constituents, but only in growth characters”

✓ located verbatim in the source · abstract, characters 455–555 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 102–106 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Jaya and IR. 8 were taller than Padma.

Material
Jaya and IR. 8e0
Outcome
heighte0
Direction
greatere0
Comparator
Padmae0

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

“Jaya and IR. 8 recorded a greater height than Padma”

✓ located verbatim in the source · abstract, characters 557–608 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 102–106 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Jaya had more effective tillers than IR. 8.

Material
Jayae0
Outcome
number of effective tillerse0
Direction
highere0
Comparator
IR. 8e0

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

“Jaya showed higher number of effective tillers than IR. 8”

✓ located verbatim in the source · abstract, characters 610–667 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 102–106 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

IP. 8 exceeded Jaya in ear length and grains per ear.

Material
IP. 8e0
Outcome
ear length and number of grains per eare0
Direction
surpassede0
Comparator
Jayae0

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

“In ear length and number of grains per ear, IP. 8 surpassed the variety Jaya”

✓ located verbatim in the source · abstract, characters 669–745 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 102–106 · show in text ↑
Observationobservedoriginal resultno effectmeasured

Claim · model-written summary

IP. 8 and Jaya were on par for 1000-grain weight.

Outcome
1000 grain weighte0
Direction
on pare0

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

“in 1000 grain weight both of them were on par”

✓ located verbatim in the source · abstract, characters 751–796 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 102–106 · show in text ↑
Observationobservedoriginal resultno effectmeasured

Claim · model-written summary

Nitrogen uptake did not vary across varieties.

Outcome
uptake of nitrogene0
Direction
No varietal variatione0

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

“No varietal variation was seen in uptake of nitrogen”

✓ located verbatim in the source · abstract, characters 798–850 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 102–106 · show in text ↑
Observationobservedoriginal resultno effectmeasured

Claim · model-written summary

IR, 8 and Jaya had similar phosphorus and potassium uptake.

Material
IR, 8 and Jayae0
Outcome
uptake of phosphorus and potassiume0
Direction
similare0

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

“Varieties IR, 8 and Jaya behaved more or less in a similar manner in the matter of uptake of phosphorus and potassium”

✓ located verbatim in the source · abstract, characters 852–969 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 102–106 · show in text ↑

nitrogen · nutrient: content · Oryza sativa (rice)Positive and negative results

464 papers: 409 positive, 55 negative or no effect

408 papers in the same direction as this paper · 52 in the opposite direction · 3 reporting no difference from an alternative

  1. negative
  2. no effect
  3. negative

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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
  2. negative
  3. 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

2,041 papers more in this group

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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.