Paper · 2024 · Mustafa Kemal Üniversitesi Tarım Bilimleri Dergisi

The effects of nitrogen levels on yield and yield parameters of sweet corn (Zea mays saccharata Sturt.) growing in Diyarbakır Districts of Turkey

Özlem Avşar; Betül Kolay; Ugur Bilge

9
claims
15
verbatim quotes
0
citations
2
research areas
✓
Open access

Abstract

Nitrogen is a critical nutrient that is vital for enhancing plant growth and productivity. The influences of nitrogen (N) fertigation on yield, quality parameters, and nitrogen use efficiency of sweet corn (Zea mays saccharata Sturt.) under South Eastern Anatolia Region (Diyarbakır) conditions in Türkiye were investigated in that trial. Fertigation applications were executed under regional conditions in Diyarbakır during the 2015 and 2016 growing seasons on the experimental land of GAPUTAEM (GAP International Agricultural Research and Training Center). The BATEM (Batı Akdeniz Agricultural Research Institute) Tatlı variety of sweet cornwas utilized as the plant material. Five different N applications (0-75-150-225-300 kg ha−1) were implemented on trial plots through a fertigation system. N levels implemented via the fertigation system had a significant effect on the days of tasselling, plant height, fresh husked ear yield (FHEY) and fresh unhusked ear yield (FUEY), chlorophyll rate, and nitrogen use efficiency (p≤0.01). Fresh husked (1918 kg ha-1) and unhusked (1342.50 kg ha-1) ear yields of sweet corn under the effect of 150 kg ha-1 nitrogen treatment were the highest. The maximum chlorophyll rate was (53.14%) recorded at 225 kg ha-1 N. Nitrogen use efficiency (NUE) increased with decreasing N supply, and the maximum NUE was observed from 75 kg ha-1 N application. The study findings indicate that the application of 150 kg N ha-1 using a fertigation method is important and environmentally conscious for the production of sweet corn.

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Claims 9

Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Nitrogen rate significantly affected tasselling date and plant height.

Taxon
sweet cornt0
Treatment
N levelse0
Outcome
days of tasselling, plant heighte0

Not reportedComparatorDirection

Verbatim

e0

“N levels implemented via the fertigation system had a significant effect on the days of tasselling, plant height, fresh husked ear yield (FHEY) and fresh unhusked ear yield (FUEY), chlorophyll rate, and nitrogen use efficiency (p≤0.01)”

✓ located verbatim in the source · abstract, characters 798–1033 · show in text ↑
t0

“sweet corn”

✓ located verbatim in the source · title, characters 64–74 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Nitrogen rate significantly affected fresh husked and unhusked ear yields.

Taxon
sweet cornt0
Treatment
N levelse0
Outcome
fresh husked ear yield (FHEY) and fresh unhusked ear yield (FUEY)e0

Not reportedComparatorDirection

Verbatim

e0

“N levels implemented via the fertigation system had a significant effect on the days of tasselling, plant height, fresh husked ear yield (FHEY) and fresh unhusked ear yield (FUEY), chlorophyll rate, and nitrogen use efficiency (p≤0.01)”

✓ located verbatim in the source · abstract, characters 798–1033 · show in text ↑
t0

“sweet corn”

✓ located verbatim in the source · title, characters 64–74 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Nitrogen rate significantly affected chlorophyll rate and nitrogen use efficiency.

Taxon
sweet cornt0
Treatment
N levelse0
Outcome
chlorophyll rate, and nitrogen use efficiencye0

Not reportedComparatorDirection

Verbatim

e0

“N levels implemented via the fertigation system had a significant effect on the days of tasselling, plant height, fresh husked ear yield (FHEY) and fresh unhusked ear yield (FUEY), chlorophyll rate, and nitrogen use efficiency (p≤0.01)”

✓ located verbatim in the source · abstract, characters 798–1033 · show in text ↑
t0

“sweet corn”

✓ located verbatim in the source · title, characters 64–74 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Husked ear yield was highest at 150 kg ha-1 nitrogen, reaching 1918 kg ha-1.

Taxon
sweet corne0
Treatment
150 kg ha-1 nitrogen treatmente0
Outcome
Fresh huskede0
Direction
higheste0
Value
1918 kg ha-1e0

Not reportedComparator

Verbatim

e0

“Fresh husked (1918 kg ha-1) and unhusked (1342.50 kg ha-1) ear yields of sweet corn under the effect of 150 kg ha-1 nitrogen treatment were the highest”

✓ located verbatim in the source · abstract, characters 1035–1186 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Unhusked ear yield was highest at 150 kg ha-1 nitrogen, reaching 1342.50 kg ha-1.

Taxon
sweet corne0
Treatment
150 kg ha-1 nitrogen treatmente0
Outcome
unhuskede0
Direction
higheste0
Value
1342.50 kg ha-1e0

Not reportedComparator

Verbatim

e0

“Fresh husked (1918 kg ha-1) and unhusked (1342.50 kg ha-1) ear yields of sweet corn under the effect of 150 kg ha-1 nitrogen treatment were the highest”

✓ located verbatim in the source · abstract, characters 1035–1186 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Chlorophyll rate peaked at 53.14% with 225 kg ha-1 N.

Taxon
sweet cornt0
Treatment
225 kg ha-1 Ne0
Outcome
chlorophyll ratee0
Direction
maximume0
Value
53.14%e0

Not reportedComparator

Verbatim

e0

“The maximum chlorophyll rate was (53.14%) recorded at 225 kg ha-1 N”

✓ located verbatim in the source · abstract, characters 1188–1255 · show in text ↑
t0

“sweet corn”

✓ located verbatim in the source · title, characters 64–74 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Nitrogen use efficiency increased as nitrogen supply decreased.

Taxon
sweet cornt0
Treatment
N supplye0
Outcome
Nitrogen use efficiency (NUE)e0
Direction
increasede0

Verbatim

e0

“Nitrogen use efficiency (NUE) increased with decreasing N supply”

✓ located verbatim in the source · abstract, characters 1257–1321 · show in text ↑
t0

“sweet corn”

✓ located verbatim in the source · title, characters 64–74 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Maximum NUE occurred at 75 kg ha-1 N.

Taxon
sweet cornt0
Treatment
75 kg ha-1 N applicatione0
Outcome
NUEe0
Direction
maximume0

Not reportedComparator

Verbatim

e0

“the maximum NUE was observed from 75 kg ha-1 N application”

✓ located verbatim in the source · abstract, characters 1327–1385 · show in text ↑
t0

“sweet corn”

✓ located verbatim in the source · title, characters 64–74 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The authors favor 150 kg N ha-1 by fertigation for sweet corn production.

Taxon
sweet corne0
Outcome
application of 150 kg N ha-1 using a fertigation methode0
Qualifier
environmentally consciouse0

Verbatim

e0

“the application of 150 kg N ha-1 using a fertigation method is important and environmentally conscious for the production of sweet corn”

✓ located verbatim in the source · abstract, characters 1420–1555 · show in text ↑

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

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

194 papers: 142 positive, 52 negative or no effect

141 papers in the same direction as this paper · 42 in the opposite direction · 10 reporting no difference from an alternative

  1. negative
  2. negative
  3. no effect

190 papers more in this group

See all 194 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.