Paper · 2022 · Pakistan Journal of Science

EFFECT OF TILLAGE AND FERTILIZER APPLICATION ON GROWTH OF CONVENTIONAL AND HYBRID MAIZE

N.I. Khan

5
claims
9
verbatim quotes
0
citations
1
research areas
✓
Open access · cc-by-sa

Abstract

The growing importance of maize has motivated researchers to focus on optimizing production technologies, such as tillage and fertilizer usage. To this end, a study was conducted in RCBD design using three tillage systems, namely deep tillage, traditional tillage, and minimum tillage, and two fertilizer levels (recommended and 50% increase over recommended NPK) on non-Hybrid C- 20 and Hybrid FHY-399 varieties. Growth parameters were documented at maturity. The data showed that tillage methods had a major impact on plant growth and yield parameters, with the exception of number of cobs per plant, which was non-significant with maximum values in deep tillage. Fertilizer had a major impact on growth parameters, with the greatest effect occurring when the NPK fertilizer level was increased by 50% above the recommended level. The interaction between tillage methods and fertilizer levels was found to be statistically insignificant for maize growth except at 1000 grains per acre. The treatment combination of deep tillage + 50% increase over recommended NPK fertilizer level yielded the highest value of 1000-grain weight. Based on the findings, it is proposed that additional research be performed with no fertilizer, and a rate of fertilizer twice the recommended rate.

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Claims 5

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Tillage methods had a major impact on maize plant growth and yield parameters.

Taxon
maizeZea mayse0
Treatment
tillage methodse1
Outcome
plant growth and yield parameterse1

Not reportedComparatorDirection

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The growing importance of maize”

✓ located verbatim in the source · abstract, characters 0–31 · show in text ↑
e1

“tillage methods had a major impact on plant growth and yield parameters”

✓ located verbatim in the source · abstract, characters 482–553 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Number of cobs per plant was not significantly affected by tillage, with maximum values in deep tillage.

Taxon
maizeZea mayse0
Treatment
deep tillagee1
Outcome
number of cobs per plante1
Direction
non-significante1
Qualifier
maximum values in deep tillagee1

Not reportedComparator

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The growing importance of maize”

✓ located verbatim in the source · abstract, characters 0–31 · show in text ↑
e1

“number of cobs per plant, which was non-significant with maximum values in deep tillage”

✓ located verbatim in the source · abstract, characters 577–664 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Fertilizer had a major impact on maize growth parameters, with the greatest effect when NPK was increased by 50% above the recommended level.

Taxon
maizeZea mayse0
Treatment
NPK fertilizer level was increased by 50% above the recommended levele1
Outcome
growth parameterse1
Direction
greatest effecte1
Comparator
recommended levele1

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The growing importance of maize”

✓ located verbatim in the source · abstract, characters 0–31 · show in text ↑
e1

“Fertilizer had a major impact on growth parameters, with the greatest effect occurring when the NPK fertilizer level was increased by 50% above the recommended level”

✓ located verbatim in the source · abstract, characters 666–831 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

The interaction between tillage methods and fertilizer levels was statistically insignificant for maize growth except for 1000 grains per acre.

Taxon
maizeZea mayse0
Treatment
tillage methods and fertilizer levelse0
Outcome
maize growthe0
Direction
insignificante0
Qualifier
except at 1000 grains per acree0

Not reportedComparator

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The interaction between tillage methods and fertilizer levels was found to be statistically insignificant for maize growth except at 1000 grains per acre”

✓ located verbatim in the source · abstract, characters 833–986 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Deep tillage combined with a 50% increase over recommended NPK gave the highest 1000-grain weight in maize.

Taxon
maizeZea mayse0
Treatment
deep tillage + 50% increase over recommended NPK fertilizer levele1
Outcome
1000-grain weighte1
Direction
highest valuee1

Not reportedComparator

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The growing importance of maize”

✓ located verbatim in the source · abstract, characters 0–31 · show in text ↑
e1

“The treatment combination of deep tillage + 50% increase over recommended NPK fertilizer level yielded the highest value of 1000-grain weight”

✓ located verbatim in the source · abstract, characters 988–1129 · show in text ↑

tillage · growth · Zea mays (maize)Positive and negative results

283 papers: 196 positive, 87 negative or no effect

86 papers in the same direction as this paper · 196 in the opposite direction

  1. positive
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tillage · yield · Zea mays (maize)Positive and negative results

1,099 papers: 812 positive, 287 negative or no effect

811 papers in the same direction as this paper · 230 in the opposite direction · 57 reporting no difference from an alternative

  1. positive
  2. no effect
  3. negative

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fertilization · growth · Zea mays (maize)Positive and negative results

1,365 papers: 1,196 positive, 169 negative or no effect

1,195 papers in the same direction as this paper · 149 in the opposite direction · 20 reporting no difference from an alternative

  1. no effect
  2. no effect
  3. negative

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fertilization · yield · Zea mays (maize)Positive and negative results

3,908 papers: 3,485 positive, 423 negative or no effect

3,484 papers in the same direction as this paper · 338 in the opposite direction · 85 reporting no difference from an alternative

  1. positive
  2. negative
  3. no effect

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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.