Paper · 2013

Foliar application of nitrogen at different growth stages influences the phenology, growth and yield of maize (Zea mays L.)

, Amanullah; Amir, Zaman; Khan; et al.

6
claims
11
verbatim quotes
25
citations
2
research areas
✓
Open access

Abstract

Foliar fertilization has been widely used and accepted as an essential part of crop production. The objective of this study was to investigate the response of maize (Zea mays L., cv. Azam) to foliar application of nitrogen (2%) from different sources viz. urea, ammonium sulphate (AS) and calcium ammonium nitrate (CAN)) and its application time (15, 30, 45, and 60 days after emergence (DAE)). The experiment was laid out in randomized complete block design (RCBD) with split plot arrangement using four replications at the research farm of the University of Agriculture Peshawar during summer 2010. Phenological development was delayed, while plant height, 1000-grains weight, grains ear -1 , biomass and grain yield as well as harvest index was increased with foliar application of N than water spray (control). Plant height, leaf area, biomass and grain yield was increased when foliar-N was applied late (45 and 60 DAE) than early (15 and 30 DAE) application. It was concluded from the results that late foliar-N application (urea, CAN or AS) about one week before tasseling up to silking could increase maize productivity in the study area.

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Claims 6

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Foliar nitrogen application delayed phenological development of maize compared with water spray.

Taxon
maizeZea mayse0
Treatment
foliar application of Ne1
Outcome
Phenological developmente1
Direction
delayede1
Comparator
water spray (control)e1

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 response of maize (Zea mays L., cv. Azam) to foliar application of nitrogen (2%)”

✓ located verbatim in the source · abstract, characters 143–227 · show in text ↑
e1

“Phenological development was delayed, while plant height, 1000-grains weight, grains ear -1 , biomass and grain yield as well as harvest index was increased with foliar application of N than water spray (control)”

✓ located verbatim in the source · abstract, characters 601–813 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Foliar nitrogen application increased plant height, 1000-grain weight and grains per ear of maize compared with water spray.

Taxon
maizeZea mayse0
Treatment
foliar application of Ne1
Outcome
plant height, 1000-grains weight, grains ear -1e1
Direction
increasede1
Comparator
water spray (control)e1

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 response of maize (Zea mays L., cv. Azam) to foliar application of nitrogen (2%)”

✓ located verbatim in the source · abstract, characters 143–227 · show in text ↑
e1

“Phenological development was delayed, while plant height, 1000-grains weight, grains ear -1 , biomass and grain yield as well as harvest index was increased with foliar application of N than water spray (control)”

✓ located verbatim in the source · abstract, characters 601–813 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Foliar nitrogen application increased biomass, grain yield and harvest index of maize compared with water spray.

Taxon
maizeZea mayse0
Treatment
foliar application of Ne1
Outcome
biomass and grain yield as well as harvest indexe1
Direction
increasede1
Comparator
water spray (control)e1

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 response of maize (Zea mays L., cv. Azam) to foliar application of nitrogen (2%)”

✓ located verbatim in the source · abstract, characters 143–227 · show in text ↑
e1

“Phenological development was delayed, while plant height, 1000-grains weight, grains ear -1 , biomass and grain yield as well as harvest index was increased with foliar application of N than water spray (control)”

✓ located verbatim in the source · abstract, characters 601–813 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Late foliar nitrogen application (45 and 60 DAE) increased plant height, leaf area and biomass of maize compared with early application (15 and 30 DAE).

Taxon
maizeZea mayse0
Treatment
late (45 and 60 DAE)e2
Outcome
plant height, leaf area, biomasse2
Direction
increasede2
Comparator
early (15 and 30 DAE) applicatione2

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 response of maize (Zea mays L., cv. Azam) to foliar application of nitrogen (2%)”

✓ located verbatim in the source · abstract, characters 143–227 · show in text ↑
e2

“Plant height, leaf area, biomass and grain yield was increased when foliar-N was applied late (45 and 60 DAE) than early (15 and 30 DAE) application”

✓ located verbatim in the source · abstract, characters 815–963 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Late foliar nitrogen application (45 and 60 DAE) increased grain yield of maize compared with early application (15 and 30 DAE).

Taxon
maizeZea mayse0
Treatment
late (45 and 60 DAE)e2
Outcome
grain yielde2
Direction
increasede2
Comparator
early (15 and 30 DAE) applicatione2

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 response of maize (Zea mays L., cv. Azam) to foliar application of nitrogen (2%)”

✓ located verbatim in the source · abstract, characters 143–227 · show in text ↑
e2

“Plant height, leaf area, biomass and grain yield was increased when foliar-N was applied late (45 and 60 DAE) than early (15 and 30 DAE) application”

✓ located verbatim in the source · abstract, characters 815–963 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

Late foliar nitrogen application (urea, CAN or AS) about one week before tasseling up to silking could increase maize productivity.

Taxon
maizeZea mayse3
Treatment
late foliar-N application (urea, CAN or AS)e3
Outcome
maize productivitye3
Qualifier
about one week before tasseling up to silkinge3

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

e3

“late foliar-N application (urea, CAN or AS) about one week before tasseling up to silking could increase maize productivity in the study area”

✓ located verbatim in the source · abstract, characters 1004–1145 · show in text ↑

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

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  3. positive

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