Paper · 2021 · Asian Journal of Agriculture and Biology

The impact of different levels of nitrogen fertilizer on maize hybrids performance under two different environments

Muhammad Imran; Amjed Ali; Muhammad Safdar; et al.

9
claims
13
verbatim quotes
15
citations
1
research areas
✓
Open access · cc-by

Abstract

to compare maize hybrids (H) and nitrogen (N) rates, growth, yield and yield components, using a split plot design with three replications in 2017 and 2018. The main plots were supplemented with one of the following levels of N (kg ha -1 : 100 (N1), 175 (N2), N3 (250), N4 (325), and N5 (400) using three different hybrids (H), H1 (P-3939), H2 (30-T-60), and H3 (30-Y-87) in the sub-plots. Data were analyzed using the MIXED procedures of SAS. The statistical models included the individual effects of N and H, the interactions between N and H, and the random effect of the year. Orthogonal polynomial contrasts were constructed to determine the optimum level of N. The yield and yield components were improved at 325 kg N ha -1 with significant effects on maximum plant height, number of grains per cob, number of grains per m 2 and grain yield. The results revealed that yield, total number of grains m -2 , number of grains per cob, 1000 grains weight, number of grain rows per cob, cob girth, and cob length were maximized (P < 0.001) at the N4 level without having an interaction with the H of maize crop. It was concluded that the selection of best H for each location at 325 kg N ha -1 can be used to enhance the efficiency of maize yield in autumn season at both locations under irrigated conditions.

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

The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 9

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

At 325 kg N ha -1, maize plant height improved.

Taxon
maizeZea mayst0
Treatment
325 kg N ha -1e0
Outcome
plant heighte0
Direction
improvede0

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 yield and yield components were improved at 325 kg N ha -1 with significant effects on maximum plant height, number of grains per cob, number of grains per m 2 and grain yield.”

✓ located verbatim in the source · abstract, characters 666–846 · show in text ↑
t0

“maize”

✓ located verbatim in the source · title, characters 57–62 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

At 325 kg N ha -1, maize number of grains per cob improved.

Taxon
maizeZea mayst0
Treatment
325 kg N ha -1e0
Outcome
number of grains per cobe0
Direction
improvede0

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 yield and yield components were improved at 325 kg N ha -1 with significant effects on maximum plant height, number of grains per cob, number of grains per m 2 and grain yield.”

✓ located verbatim in the source · abstract, characters 666–846 · show in text ↑
t0

“maize”

✓ located verbatim in the source · title, characters 57–62 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

At 325 kg N ha -1, maize number of grains per m 2 improved.

Taxon
maizeZea mayst0
Treatment
325 kg N ha -1e0
Outcome
number of grains per m 2e0
Direction
improvede0

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 yield and yield components were improved at 325 kg N ha -1 with significant effects on maximum plant height, number of grains per cob, number of grains per m 2 and grain yield.”

✓ located verbatim in the source · abstract, characters 666–846 · show in text ↑
t0

“maize”

✓ located verbatim in the source · title, characters 57–62 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

At 325 kg N ha -1, maize grain yield improved.

Taxon
maizeZea mayst0
Treatment
325 kg N ha -1e0
Outcome
grain yielde0
Direction
improvede0

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 yield and yield components were improved at 325 kg N ha -1 with significant effects on maximum plant height, number of grains per cob, number of grains per m 2 and grain yield.”

✓ located verbatim in the source · abstract, characters 666–846 · show in text ↑
t0

“maize”

✓ located verbatim in the source · title, characters 57–62 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

At N4, maize yield, total number of grains m -2 , number of grains per cob were maximized.

Taxon
maizeZea mayse0
Treatment
N4e0
Outcome
yield, total number of grains m -2 , number of grains per cobe0
Direction
maximizede0

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 results revealed that yield, total number of grains m -2 , number of grains per cob, 1000 grains weight, number of grain rows per cob, cob girth, and cob length were maximized (P < 0.001) at the N4 level without having an interaction with the H of maize crop.”

✓ located verbatim in the source · abstract, characters 847–1110 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

At N4, maize 1000 grains weight, number of grain rows per cob, cob girth were maximized.

Taxon
maizeZea mayse0
Treatment
N4e0
Outcome
1000 grains weight, number of grain rows per cob, cob girthe0
Direction
maximizede0

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 results revealed that yield, total number of grains m -2 , number of grains per cob, 1000 grains weight, number of grain rows per cob, cob girth, and cob length were maximized (P < 0.001) at the N4 level without having an interaction with the H of maize crop.”

✓ located verbatim in the source · abstract, characters 847–1110 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

At N4, maize cob length were maximized.

Taxon
maizeZea mayse0
Treatment
N4e0
Outcome
cob lengthe0
Direction
maximizede0

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 results revealed that yield, total number of grains m -2 , number of grains per cob, 1000 grains weight, number of grain rows per cob, cob girth, and cob length were maximized (P < 0.001) at the N4 level without having an interaction with the H of maize crop.”

✓ located verbatim in the source · abstract, characters 847–1110 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

N4 effects did not interact with maize hybrid.

Taxon
maizeZea mayse0
Treatment
N4e0
Outcome
interaction with the He0
Direction
withoute0

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 results revealed that yield, total number of grains m -2 , number of grains per cob, 1000 grains weight, number of grain rows per cob, cob girth, and cob length were maximized (P < 0.001) at the N4 level without having an interaction with the H of maize crop.”

✓ located verbatim in the source · abstract, characters 847–1110 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

Authors recommend selecting the best hybrid for each location at 325 kg N ha -1 under autumn irrigation.

Taxon
maizeZea mayse0
Outcome
selection of best H for each location at 325 kg N ha -1e0
Qualifier
autumn seasone0
Setting
both locationse0

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

“It was concluded that the selection of best H for each location at 325 kg N ha -1 can be used to enhance the efficiency of maize yield in autumn season at both locations under irrigated conditions.”

✓ located verbatim in the source · abstract, characters 1111–1308 · show in text ↑

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

748 papers: 619 positive, 129 negative or no effect

618 papers in the same direction as this paper · 115 in the opposite direction · 14 reporting no difference from an alternative

  1. no effect
  2. positive
  3. positive

744 papers more in this group

See all 748 papers →

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

2,185 papers: 1,906 positive, 279 negative or no effect

1,905 papers in the same direction as this paper · 234 in the opposite direction · 45 reporting no difference from an alternative

  1. no effect
  2. positive
  3. positive

2,181 papers more in this group

See all 2,185 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.