Paper · 2015 · Journal of Agronomy

Effect of Spacing and Nitrogen Fertilizer on the Yield and Yield Component of Shallot (Allium ascalonium L.)

Fikadu Negese Biru

9
claims
18
verbatim quotes
10
citations
1
research areas
✓
Open access

Abstract

This study was conducted to study the interaction effect of different rate of nitrogen fertilizer and plant spacing on yield and yield components of shallot under Jimma condition, in the experimental field of College of Agriculture and Veterinary Medicine, Jimma University. Local variety of shallot was used with the three level of nitrogen (0, 100 and 150 kg haG 1 ) and three intra-row spacing (10, 15 and 20 cm). The result of this field experiment indicated that, the interaction effect of 150 kg haG 1 and 20 cm spacing resulted highly significant plant height (30.33 cm) (p<0.05). Nitrogen levels significantly affected the number of leaves per plant of shallot with the highest value (27.84 cm) obtained from 100 kg N haG 1 , so, statistically significant (p<0.05). There was no significant effect of interaction between nitrogen and intra-row spacing on leave number of shallot. Significantly largest stem diameter 0.63 cm (p<0.50) was obtained from intra-row spacing of 20 cm. But there was no interaction effect of nitrogen and spacing on the stem diameter of shallot. There was no interaction effect of nitrogen fertilizer and spacing on the bulb diameter of shallot. No significant difference was obtained with the interaction effect of nitrogen and spacing on shallot bulb weight. An increased N dose to 100 kg haG 1 resulted in the increased yield of shallot bulbs to 30.2 t haG 1 which was significantly different from 0 and 150 kg haG 1 (p<0.05). From this finding, the highest growth performance of plant which leads to increased yield could be using 150 kg haG 1 and spacing of 20 cm. However, the conclusive recommendation should be based on the results of repeated experiments.

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Claims 9

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

The combination of 150 kg haG 1 nitrogen and 20 cm spacing produced plant height of 30.33 cm.

Treatment
150 kg haG 1 and 20 cm spacinge0
Outcome
plant heighte0
Direction
highly significante0
Value
30.33 cme0

Not reportedComparator

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

Allium cepa var. aggregatum
Allium cepa var. aggregatum · TaxonEvan-Amos · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“the interaction effect of 150 kg haG 1 and 20 cm spacing resulted highly significant plant height (30.33 cm) (p<0.05)”

✓ located verbatim in the source · abstract, characters 469–586 · show in text ↑
t0

“Shallot (Allium ascalonium L.)”

✓ located verbatim in the source · title, characters 78–108 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

At 100 kg N haG 1, shallot had the highest reported leaf number, 27.84 cm as printed.

Treatment
100 kg N haG 1e0
Outcome
number of leaves per plante0
Direction
higheste0
Value
27.84 cme0

Not reportedComparator

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

Allium cepa var. aggregatum
Allium cepa var. aggregatum · TaxonEvan-Amos · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Nitrogen levels significantly affected the number of leaves per plant of shallot with the highest value (27.84 cm) obtained from 100 kg N haG 1 , so, statistically significant (p<0.05)”

✓ located verbatim in the source · abstract, characters 588–772 · show in text ↑
t0

“Shallot (Allium ascalonium L.)”

✓ located verbatim in the source · title, characters 78–108 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

The nitrogen by spacing interaction was not significant for leaf number.

Treatment
interaction between nitrogen and intra-row spacinge0
Outcome
leave numbere0

Not reportedComparatorDirection

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

Allium cepa var. aggregatum
Allium cepa var. aggregatum · TaxonEvan-Amos · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“There was no significant effect of interaction between nitrogen and intra-row spacing on leave number of shallot”

✓ located verbatim in the source · abstract, characters 774–886 · show in text ↑
t0

“Shallot (Allium ascalonium L.)”

✓ located verbatim in the source · title, characters 78–108 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Stem diameter was largest at 20 cm intra-row spacing, at 0.63 cm.

Treatment
intra-row spacing of 20 cme0
Outcome
stem diametere0
Direction
largeste0
Value
0.63 cme0

Not reportedComparator

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

Allium cepa var. aggregatum
Allium cepa var. aggregatum · TaxonEvan-Amos · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Significantly largest stem diameter 0.63 cm (p<0.50) was obtained from intra-row spacing of 20 cm”

✓ located verbatim in the source · abstract, characters 888–985 · show in text ↑
t0

“Shallot (Allium ascalonium L.)”

✓ located verbatim in the source · title, characters 78–108 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

The nitrogen by spacing interaction did not significantly affect stem diameter.

Treatment
interaction effect of nitrogen and spacinge0
Outcome
stem diametere0

Not reportedComparatorDirection

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

Allium cepa var. aggregatum
Allium cepa var. aggregatum · TaxonEvan-Amos · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“there was no interaction effect of nitrogen and spacing on the stem diameter of shallot”

✓ located verbatim in the source · abstract, characters 991–1078 · show in text ↑
t0

“Shallot (Allium ascalonium L.)”

✓ located verbatim in the source · title, characters 78–108 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

The nitrogen by spacing interaction did not significantly affect bulb diameter.

Treatment
interaction effect of nitrogen fertilizer and spacinge0
Outcome
bulb diametere0

Not reportedComparatorDirection

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

Allium cepa var. aggregatum
Allium cepa var. aggregatum · TaxonEvan-Amos · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“There was no interaction effect of nitrogen fertilizer and spacing on the bulb diameter of shallot”

✓ located verbatim in the source · abstract, characters 1080–1178 · show in text ↑
t0

“Shallot (Allium ascalonium L.)”

✓ located verbatim in the source · title, characters 78–108 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

The nitrogen by spacing interaction did not significantly affect shallot bulb weight.

Treatment
interaction effect of nitrogen and spacinge0
Outcome
shallot bulb weighte0

Not reportedComparatorDirection

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

Allium cepa var. aggregatum
Allium cepa var. aggregatum · TaxonEvan-Amos · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“No significant difference was obtained with the interaction effect of nitrogen and spacing on shallot bulb weight”

✓ located verbatim in the source · abstract, characters 1180–1293 · show in text ↑
t0

“Shallot (Allium ascalonium L.)”

✓ located verbatim in the source · title, characters 78–108 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

A 100 kg haG 1 nitrogen dose raised shallot bulb yield to 30.2 t haG 1 versus 0 and 150 kg haG 1.

Treatment
100 kg haG 1e0
Outcome
yield of shallot bulbse0
Direction
increasede0
Value
30.2 t haG 1e0
Comparator
0 and 150 kg haG 1e0

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

Allium cepa var. aggregatum
Allium cepa var. aggregatum · TaxonEvan-Amos · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“An increased N dose to 100 kg haG 1 resulted in the increased yield of shallot bulbs to 30.2 t haG 1 which was significantly different from 0 and 150 kg haG 1 (p<0.05)”

✓ located verbatim in the source · abstract, characters 1295–1462 · show in text ↑
t0

“Shallot (Allium ascalonium L.)”

✓ located verbatim in the source · title, characters 78–108 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors suggest 150 kg haG 1 nitrogen and 20 cm spacing for the highest growth performance and increased yield, subject to replication.

Treatment
150 kg haG 1 and spacing of 20 cme0
Outcome
highest growth performance of plant which leads to increased yielde0

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

Allium cepa var. aggregatum
Allium cepa var. aggregatum · TaxonEvan-Amos · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“the highest growth performance of plant which leads to increased yield could be using 150 kg haG 1 and spacing of 20 cm”

✓ located verbatim in the source · abstract, characters 1483–1602 · show in text ↑
t0

“Shallot (Allium ascalonium L.)”

✓ located verbatim in the source · title, characters 78–108 · show in text ↑

nitrogen · growth · Allium cepa (onion)Results differ

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density · growth · Allium cepa (onion)Positive and negative results

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density · yield · Allium cepa (onion)Positive and negative results

54 papers: 48 positive, 6 negative or no effect

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nitrogen · yield · Allium cepa (onion)Positive and negative results

184 papers: 157 positive, 27 negative or no effect

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fertilization · yield · Allium cepa (onion)Positive and negative results

530 papers: 464 positive, 66 negative or no effect

65 papers in the same direction as this paper · 464 in the opposite direction

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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.