Paper · 2012 · Bangladesh Journal of Agricultural Research

Effect of bulb size and plant spacing on seed production of onion (Allium cepa L.)

Md. Asaduzzaman; Md. Mainul Hasan; Md. Mahmudul Hasan; et al.

5
claims
9
verbatim quotes
22
citations
2
research areas
✓
Open access

Abstract

A field experiment was conducted at the `Research Farm` of Regional Seed Production Office of Lal Teer Seed Limited, Dinajpur, Bangladesh during November 2008 to April 2009. The study was conducted to investigate the effect of bulb size and planting spacing on seed production of cultivar Taherpuri onion. Three bulb sizes [small (5±2g), medium (10±2g), and large (15±2g)] and four planting spacing [closest 25×15, closer 25×20, wider 30×15, and widest 30×20cm] was considered in this experiment. Number of flowering stalks, length of flowering stalks, number of umbels per plant, number seeded fruits, seed weight per umbel, 1000-seed weight and seed yield per hectare were measured to assess the onion seeds. The results revealed that the highest seed yield (776.67 kg) per hectare was obtained from the large bulb (15±2g) with the closest spacing of 25×15cm followed by small bulb size of same spacing. The maximum number of flowers per umbel (371.39), seed weight per umbel (0.80g) and 1000-seed weight (3.92g) were obtained from the largest bulb size (15±2g) with widest (30×20cm) planting spacing. Hence, large bulb size with closest plant spacing is suggested for onion seed production in northern part of Bangladesh. Bangladesh J. Agril. Res. 37(3): 405-414, September 2012 DOI: http://dx.doi.org/10.3329/bjar.v37i3.12084

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Claims 5

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Large bulbs at the closest spacing produced the highest onion seed yield, 776.67 kg per hectare.

Taxon
onionAllium cepat0
Treatment
large bulb (15±2g) with the closest spacing of 25×15cme0
Outcome
seed yielde0
Direction
higheste0
Value
776.67 kge0
Comparator
small bulb size of same spacinge0

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 highest seed yield (776.67 kg) per hectare was obtained from the large bulb (15±2g) with the closest spacing of 25×15cm followed by small bulb size of same spacing”

✓ located verbatim in the source · abstract, characters 737–904 · show in text ↑
t0

“onion (Allium cepa L.)”

✓ located verbatim in the source · title, characters 60–82 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Large bulbs at widest spacing gave the maximum number of flowers per umbel, 371.39.

Taxon
onionAllium cepat0
Treatment
largest bulb size (15±2g) with widest (30×20cm) planting spacinge0
Outcome
number of flowers per umbele0
Direction
maximume0
Value
371.39e0

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 maximum number of flowers per umbel (371.39), seed weight per umbel (0.80g) and 1000-seed weight (3.92g) were obtained from the largest bulb size (15±2g) with widest (30×20cm) planting spacing”

✓ located verbatim in the source · abstract, characters 906–1102 · show in text ↑
t0

“onion (Allium cepa L.)”

✓ located verbatim in the source · title, characters 60–82 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Large bulbs at widest spacing gave maximum seed weight per umbel, 0.80g.

Taxon
onionAllium cepat0
Treatment
largest bulb size (15±2g) with widest (30×20cm) planting spacinge0
Outcome
seed weight per umbele0
Direction
maximume0
Value
0.80ge0

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 maximum number of flowers per umbel (371.39), seed weight per umbel (0.80g) and 1000-seed weight (3.92g) were obtained from the largest bulb size (15±2g) with widest (30×20cm) planting spacing”

✓ located verbatim in the source · abstract, characters 906–1102 · show in text ↑
t0

“onion (Allium cepa L.)”

✓ located verbatim in the source · title, characters 60–82 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Large bulbs at widest spacing gave maximum thousand-seed weight, 3.92g.

Taxon
onionAllium cepat0
Treatment
largest bulb size (15±2g) with widest (30×20cm) planting spacinge0
Outcome
1000-seed weighte0
Direction
maximume0
Value
3.92ge0

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 maximum number of flowers per umbel (371.39), seed weight per umbel (0.80g) and 1000-seed weight (3.92g) were obtained from the largest bulb size (15±2g) with widest (30×20cm) planting spacing”

✓ located verbatim in the source · abstract, characters 906–1102 · show in text ↑
t0

“onion (Allium cepa L.)”

✓ located verbatim in the source · title, characters 60–82 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The authors recommend large bulbs at closest spacing for onion seed production in northern Bangladesh.

Taxon
onionAllium cepae0
Outcome
large bulb size with closest plant spacinge0
Setting
northern part of Bangladeshe0

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

“large bulb size with closest plant spacing is suggested for onion seed production in northern part of Bangladesh”

✓ located verbatim in the source · abstract, characters 1111–1223 · show in text ↑

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

54 papers: 48 positive, 6 negative or no effect

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

  1. positive
  2. positive
  3. negative

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See all 54 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.