Paper · 2015 · Journal of Agronomy

Response of Onion (Allium cepa L.) to Bulb Size at Planting and NPK 15:15:15 Fertilizer Application Rate in the Guinea Savannah Agroecology of Ghana

I.K. Addai; D.K. Anning

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claims
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verbatim quotes
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citations
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research areas
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Open access

Abstract

Studies were conducted during the 2013 and 2014 cropping seasons at the research field of the University for Development Studies, Nyankpala in the Northern Region of Ghana to determine the effects of bulb size at planting and NPK 15:15:15 application rate on growth and yield of onion. The NPK 15:15:15 was applied at the rate of 0 (control), 80, 165 and 250 kg haG 1 . Three different bulb sizes: small (2.5-3.5 cm), medium (4.5-5.5 cm) and large (6.5-8.5 cm) were used. The treatment combinations were laid out in a randomized complete block design with three replications. Leaf length, number of sprouts and leaf number were measured from 1-7 weeks after planting. Also individual bulb fresh weight, cluster bulb fresh weight and number of bulbs were measured at harvest. Results indicated that the plants produced from large bulbs produced the highest vegetative growth whilst those from small bulbs recorded the least growth. The application of 80 kg haG 1 of NPK 15:15:15 produced the highest number and fresh weight of bulbs at harvest whilst plants produced from small bulbs fertilized with 250 kg haG 1 recorded the least bulb yield at harvest.

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Claims 3

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Onions planted from large bulbs had the highest vegetative growth, whereas those from small bulbs had the least.

Taxon
plantsViridiplantaee0
Treatment
large bulbse0
Outcome
vegetative growthe0
Direction
higheste0
Comparator
small bulbse0

Verbatim

e0

“plants produced from large bulbs produced the highest vegetative growth whilst those from small bulbs recorded the least growth”

✓ located verbatim in the source · abstract, characters 802–929 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Applying 80 kg haG 1 NPK 15:15:15 gave the highest number and fresh weight of onion bulbs at harvest.

Taxon
onionAllium cepat0
Treatment
80 kg haG 1 of NPK 15:15:15e0
Outcome
number and fresh weight of bulbse0
Direction
higheste0

Not reportedComparator

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

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The application of 80 kg haG 1 of NPK 15:15:15 produced the highest number and fresh weight of bulbs at harvest”

✓ located verbatim in the source · abstract, characters 931–1042 · show in text ↑
t0

“Onion”

✓ located verbatim in the source · title, characters 12–17 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Onions from small bulbs fertilized with 250 kg haG 1 had the least bulb yield at harvest.

Taxon
plantsViridiplantaee0
Treatment
small bulbs fertilized with 250 kg haG 1e0
Outcome
bulb yielde0
Direction
leaste0

Not reportedComparator

Verbatim

e0

“plants produced from small bulbs fertilized with 250 kg haG 1 recorded the least bulb yield at harvest”

✓ located verbatim in the source · abstract, characters 1050–1152 · show in text ↑

fertilization · yield · Viridiplantae (plants)Positive and negative results

27 papers: 22 positive, 5 negative or no effect

4 papers in the same direction as this paper · 22 in the opposite direction

  1. positive
  2. positive
  3. positive

23 papers more in this group

See all 27 papers →

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

294 papers: 251 positive, 43 negative or no effect

250 papers in the same direction as this paper · 40 in the opposite direction · 3 reporting no difference from an alternative

  1. no effect
  2. no effect
  3. no effect

290 papers more in this group

See all 294 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.