Paper · 2016 · Agricultural Research Journal

Effect of nitrogen and zinc fertilization on quality and productivity of maize (Zea mays L.)

S K Meena; S L Mundra; Hansram Mali

17
claims
33
verbatim quotes
0
citations
2
research areas
✓
Open access · cc-by

Abstract

A field experiment was conducted to study four levels of nitrogen and three levels of zinc on quality and yield of maize. The results revealed that application of N up to 100 kg/ha recorded significantly higher leaf area index at all the growth stages and was superior in increasing relative growth rate (RGR) and not assimilation rate (NAR) between 25 and 50 days compared to 60 kg/ha. Application of 100 and 120 kg N/ha was statistically at par and these were found significantly superior in increasing cob/plant and shelling per cent over 60 and 80 kg N/ha. Application of 80 and 100 kg N/ha significantly increased grain and stover yield over 60 kg N/ha. A significant increase in N, P and Zn content and their uptake was also recorded in these treatments. Protein content in grain and chlorophyll in leaves increased significantly with successive increase in nitrogen doses up to 100 N/ha. Application of zinc up to 5.0 kg/ha significantly enhanced leaf area index and shelling per cent compared to 2.5 kg zinc/ha. Application of 5.0 kg Zn/ha significantly increased grain and stover yields of maize over 2.5 kg Zn/ha. A significant increase in N and P content and their uptake was also recorded at 5.0 kg Zn/ha. Application of 5.0 kg Zn/ha also recorded significantly higher chlorophyll (1.81 mg/g 50 DAS) and protein content of grain (10.01%).

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 17

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Nitrogen at 100 kg/ha significantly increased maize leaf area index over 60 kg/ha at all growth stages.

Taxon
maizeZea mayst0
Treatment
100 kg/hae0
Outcome
leaf area indexe0
Direction
highere0
Qualifier
all the growth stagese0
Comparator
60 kg/hae0

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

t0

“maize (Zea mays L.)”

✓ located verbatim in the source · title, characters 73–92 · show in text ↑
e0

“application of N up to 100 kg/ha recorded significantly higher leaf area index at all the growth stages and was superior in increasing relative growth rate (RGR) and not assimilation rate (NAR) between 25 and 50 days compared to 60 kg/ha.”

✓ located verbatim in the source · abstract, characters 148–386 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Nitrogen at 100 kg/ha increased relative growth rate compared with 60 kg/ha between days 25 and 50.

Taxon
maizeZea mayst0
Treatment
100 kg/hae0
Outcome
relative growth rate (RGR)e0
Direction
increasinge0
Qualifier
between 25 and 50 dayse0
Comparator
60 kg/hae0

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

t0

“maize (Zea mays L.)”

✓ located verbatim in the source · title, characters 73–92 · show in text ↑
e0

“application of N up to 100 kg/ha recorded significantly higher leaf area index at all the growth stages and was superior in increasing relative growth rate (RGR) and not assimilation rate (NAR) between 25 and 50 days compared to 60 kg/ha.”

✓ located verbatim in the source · abstract, characters 148–386 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Nitrogen at 100 kg/ha increased net assimilation rate compared with 60 kg/ha between days 25 and 50.

Taxon
maizeZea mayst0
Treatment
100 kg/hae0
Outcome
not assimilation rate (NAR)e0
Direction
increasinge0
Qualifier
between 25 and 50 dayse0
Comparator
60 kg/hae0

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

t0

“maize (Zea mays L.)”

✓ located verbatim in the source · title, characters 73–92 · show in text ↑
e0

“application of N up to 100 kg/ha recorded significantly higher leaf area index at all the growth stages and was superior in increasing relative growth rate (RGR) and not assimilation rate (NAR) between 25 and 50 days compared to 60 kg/ha.”

✓ located verbatim in the source · abstract, characters 148–386 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Nitrogen at 100 and 120 kg N/ha produced statistically similar cob numbers and exceeded 60 and 80 kg N/ha.

Taxon
maizeZea mayst0
Treatment
100 and 120 kg N/hae0
Outcome
cob/plante0
Direction
increasinge0
Qualifier
statistically at pare0
Comparator
60 and 80 kg N/hae0

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

t0

“maize (Zea mays L.)”

✓ located verbatim in the source · title, characters 73–92 · show in text ↑
e0

“Application of 100 and 120 kg N/ha was statistically at par and these were found significantly superior in increasing cob/plant and shelling per cent over 60 and 80 kg N/ha.”

✓ located verbatim in the source · abstract, characters 387–560 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Nitrogen at 100 and 120 kg N/ha produced statistically similar shelling percentages and exceeded 60 and 80 kg N/ha.

Taxon
maizeZea mayst0
Treatment
100 and 120 kg N/hae0
Outcome
shelling per cente0
Direction
increasinge0
Qualifier
statistically at pare0
Comparator
60 and 80 kg N/hae0

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

t0

“maize (Zea mays L.)”

✓ located verbatim in the source · title, characters 73–92 · show in text ↑
e0

“Application of 100 and 120 kg N/ha was statistically at par and these were found significantly superior in increasing cob/plant and shelling per cent over 60 and 80 kg N/ha.”

✓ located verbatim in the source · abstract, characters 387–560 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Nitrogen at 80 and 100 kg N/ha significantly increased maize grain yield over 60 kg N/ha.

Taxon
maizeZea mayst0
Treatment
80 and 100 kg N/hae0
Outcome
grain and stover yielde0
Direction
increasede0
Comparator
60 kg N/hae0

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

t0

“maize (Zea mays L.)”

✓ located verbatim in the source · title, characters 73–92 · show in text ↑
e0

“Application of 80 and 100 kg N/ha significantly increased grain and stover yield over 60 kg N/ha.”

✓ located verbatim in the source · abstract, characters 561–658 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Nitrogen at 80 and 100 kg N/ha significantly increased maize stover yield over 60 kg N/ha.

Taxon
maizeZea mayst0
Treatment
80 and 100 kg N/hae0
Outcome
stover yielde0
Direction
increasede0
Comparator
60 kg N/hae0

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

t0

“maize (Zea mays L.)”

✓ located verbatim in the source · title, characters 73–92 · show in text ↑
e0

“Application of 80 and 100 kg N/ha significantly increased grain and stover yield over 60 kg N/ha.”

✓ located verbatim in the source · abstract, characters 561–658 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

The 80 and 100 kg N/ha treatments significantly increased maize N, P and Zn content and uptake.

Taxon
maizeZea mayst0
Treatment
80 and 100 kg N/hae0
Outcome
N, P and Zn content and their uptakee0
Direction
increasee0
Comparator
60 kg N/hae0

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

t0

“maize (Zea mays L.)”

✓ located verbatim in the source · title, characters 73–92 · show in text ↑
e0

“Application of 80 and 100 kg N/ha significantly increased grain and stover yield over 60 kg N/ha. A significant increase in N, P and Zn content and their uptake was also recorded in these treatments.”

✓ located verbatim in the source · abstract, characters 561–760 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Successive nitrogen increases up to 100 N/ha significantly increased maize grain protein content.

Taxon
maizeZea mayst0
Treatment
nitrogen doses up to 100 N/hae0
Outcome
Protein content in graine0
Direction
increasede0

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

t0

“maize (Zea mays L.)”

✓ located verbatim in the source · title, characters 73–92 · show in text ↑
e0

“Protein content in grain and chlorophyll in leaves increased significantly with successive increase in nitrogen doses up to 100 N/ha.”

✓ located verbatim in the source · abstract, characters 761–894 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Successive nitrogen increases up to 100 N/ha significantly increased maize leaf chlorophyll.

Taxon
maizeZea mayst0
Treatment
nitrogen doses up to 100 N/hae0
Outcome
chlorophyll in leavese0
Direction
increasede0

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

t0

“maize (Zea mays L.)”

✓ located verbatim in the source · title, characters 73–92 · show in text ↑
e0

“Protein content in grain and chlorophyll in leaves increased significantly with successive increase in nitrogen doses up to 100 N/ha.”

✓ located verbatim in the source · abstract, characters 761–894 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Zinc at 5.0 kg/ha significantly enhanced maize leaf area index relative to 2.5 kg zinc/ha.

Taxon
maizeZea mayst0
Treatment
zinc up to 5.0 kg/hae0
Outcome
leaf area indexe0
Direction
enhancede0
Comparator
2.5 kg zinc/hae0

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

t0

“maize (Zea mays L.)”

✓ located verbatim in the source · title, characters 73–92 · show in text ↑
e0

“Application of zinc up to 5.0 kg/ha significantly enhanced leaf area index and shelling per cent compared to 2.5 kg zinc/ha.”

✓ located verbatim in the source · abstract, characters 895–1019 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Zinc at 5.0 kg/ha significantly enhanced maize shelling percentage relative to 2.5 kg zinc/ha.

Taxon
maizeZea mayst0
Treatment
zinc up to 5.0 kg/hae0
Outcome
shelling per cente0
Direction
enhancede0
Comparator
2.5 kg zinc/hae0

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

t0

“maize (Zea mays L.)”

✓ located verbatim in the source · title, characters 73–92 · show in text ↑
e0

“Application of zinc up to 5.0 kg/ha significantly enhanced leaf area index and shelling per cent compared to 2.5 kg zinc/ha.”

✓ located verbatim in the source · abstract, characters 895–1019 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Zinc at 5.0 kg Zn/ha significantly increased maize grain yield over 2.5 kg Zn/ha.

Taxon
maizeZea mayse0
Treatment
5.0 kg Zn/hae0
Outcome
graine0
Direction
increasede0
Comparator
2.5 kg Zn/hae0

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

t0

“maize (Zea mays L.)”

✓ located verbatim in the source · title, characters 73–92 · show in text ↑
e0

“Application of 5.0 kg Zn/ha significantly increased grain and stover yields of maize over 2.5 kg Zn/ha.”

✓ located verbatim in the source · abstract, characters 1020–1123 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Zinc at 5.0 kg Zn/ha significantly increased maize stover yield over 2.5 kg Zn/ha.

Taxon
maizeZea mayse0
Treatment
5.0 kg Zn/hae0
Outcome
stover yieldse0
Direction
increasede0
Comparator
2.5 kg Zn/hae0

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

“Application of 5.0 kg Zn/ha significantly increased grain and stover yields of maize over 2.5 kg Zn/ha.”

✓ located verbatim in the source · abstract, characters 1020–1123 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Zinc at 5.0 kg Zn/ha significantly increased maize N and P content and uptake.

Taxon
maizeZea mayse0
Treatment
5.0 kg Zn/hae0
Outcome
N and P content and their uptakee0
Direction
increasee0
Comparator
2.5 kg Zn/hae0

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

t0

“maize (Zea mays L.)”

✓ located verbatim in the source · title, characters 73–92 · show in text ↑
e0

“Application of 5.0 kg Zn/ha significantly increased grain and stover yields of maize over 2.5 kg Zn/ha. A significant increase in N and P content and their uptake was also recorded at 5.0 kg Zn/ha.”

✓ located verbatim in the source · abstract, characters 1020–1217 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Zinc at 5.0 kg Zn/ha gave significantly higher maize chlorophyll content of 1.81 mg/g at 50 DAS.

Taxon
maizeZea mayst0
Treatment
5.0 kg Zn/hae0
Outcome
chlorophylle0
Direction
highere0
Value
1.81 mg/ge0
Qualifier
50 DASe0

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

t0

“maize (Zea mays L.)”

✓ located verbatim in the source · title, characters 73–92 · show in text ↑
e0

“Application of 5.0 kg Zn/ha also recorded significantly higher chlorophyll (1.81 mg/g 50 DAS) and protein content of grain (10.01%).”

✓ located verbatim in the source · abstract, characters 1218–1350 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Zinc at 5.0 kg Zn/ha gave significantly higher maize grain protein content of 10.01%.

Taxon
maizeZea mayst0
Treatment
5.0 kg Zn/hae0
Outcome
protein content of graine0
Direction
highere0
Value
10.01%e0

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

t0

“maize (Zea mays L.)”

✓ located verbatim in the source · title, characters 73–92 · show in text ↑
e0

“Application of 5.0 kg Zn/ha also recorded significantly higher chlorophyll (1.81 mg/g 50 DAS) and protein content of grain (10.01%).”

✓ located verbatim in the source · abstract, characters 1218–1350 · show in text ↑

zinc atom · physiology: pigments · Zea mays (maize)Results differ

37 papers: 31 positive, 6 negative or no effect

30 papers in the same direction as this paper · 6 in the opposite direction

  1. negative
  2. negative
  3. negative

33 papers more in this group

See all 37 papers →

zinc atom · quality: protein · Zea mays (maize)Results differ

42 papers: 37 positive, 5 negative or no effect

36 papers in the same direction as this paper · 5 in the opposite direction

  1. no effect
  2. negative
  3. no effect

38 papers more in this group

See all 42 papers →

zinc atom · growth · Zea mays (maize)Results differ

224 papers: 183 positive, 41 negative or no effect

182 papers in the same direction as this paper · 41 in the opposite direction

  1. no effect
  2. no effect
  3. negative

220 papers more in this group

See all 224 papers →

zinc atom · nutrient: content · Zea mays (maize)Results differ

235 papers: 199 positive, 36 negative or no effect

198 papers in the same direction as this paper · 33 in the opposite direction · 3 reporting no difference from an alternative

  1. no effect
  2. negative
  3. negative

231 papers more in this group

See all 235 papers →

zinc atom · yield · Zea mays (maize)Results differ

441 papers: 391 positive, 50 negative or no effect

390 papers in the same direction as this paper · 47 in the opposite direction · 3 reporting no difference from an alternative

  1. negative
  2. negative
  3. no effect

437 papers more in this group

See all 441 papers →

nitrogen · physiology: pigments · Zea mays (maize)Positive and negative results

126 papers: 112 positive, 14 negative or no effect

111 papers in the same direction as this paper · 13 in the opposite direction · 1 reporting no difference from an alternative

  1. negative
  2. negative
  3. no effect

122 papers more in this group

See all 126 papers →

nitrogen · quality: protein · Zea mays (maize)Positive and negative results

181 papers: 164 positive, 17 negative or no effect

163 papers in the same direction as this paper · 14 in the opposite direction · 3 reporting no difference from an alternative

  1. no effect
  2. no effect
  3. negative

177 papers more in this group

See all 181 papers →

nitrogen · nutrient: content · Zea mays (maize)Positive and negative results

489 papers: 403 positive, 86 negative or no effect

402 papers in the same direction as this paper · 83 in the opposite direction · 3 reporting no difference from an alternative

  1. no effect
  2. negative
  3. no effect

485 papers more in this group

See all 489 papers →

8 of 9 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.

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.