Paper · 2011 · American Journal of Plant Sciences

Dependence of Pumpkin Yield on Plant Density and Variety

Khalid El-Sayed Abd El-Hamed; Mohammed Wasfy Mohammed Elwan

8
claims
12
verbatim quotes
25
citations
1
research areas
✓
Open access · cc-by

Abstract

Pumpkins (Cucurbita spp.) are an important specialty vegetable. Field studies were conducted on three pumpkin cultivars characterized with different growth habits to determine the effects of plant population and genotypes on marketable yield. Increasing plant populations from 4780 to 9560 plant per hectare resulted in significantly greater fruit number and yield in both growing seasons and for all tested genotypes. Average fruit weight declined at the higher populations. The response of pumpkin genotypes to different planting densities was genotype (growth habit) dependent since the response was pronounced in large vine types compared to bush type. The phenotypic variation existed among pumpkin genotypes for yield seems to be under genetic control. Foliar application of potassium improved growth and yield of pumpkin plants although the non-significant effect. These results demonstrate that growers may increase pumpkin yield by increasing plant populations.

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 8

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Increasing plant populations from 4780 to 9560 per hectare significantly increased fruit number.

Taxon
Pumpkint0
Treatment
Increasing plant populations from 4780 to 9560 plant per hectaree0
Outcome
fruit numbere0
Direction
greatere0
Qualifier
both growing seasons and for all tested genotypese0

Not reportedComparator

Verbatim

e0

“Increasing plant populations from 4780 to 9560 plant per hectare resulted in significantly greater fruit number and yield in both growing seasons and for all tested genotypes”

✓ located verbatim in the source · abstract, characters 243–417 · show in text ↑
t0

“Pumpkin”

✓ located verbatim in the source · title, characters 14–21 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Increasing plant populations from 4780 to 9560 per hectare significantly increased yield.

Taxon
Pumpkint0
Treatment
Increasing plant populations from 4780 to 9560 plant per hectaree0
Outcome
yielde0
Direction
greatere0
Qualifier
both growing seasons and for all tested genotypese0

Not reportedComparator

Verbatim

e0

“Increasing plant populations from 4780 to 9560 plant per hectare resulted in significantly greater fruit number and yield in both growing seasons and for all tested genotypes”

✓ located verbatim in the source · abstract, characters 243–417 · show in text ↑
t0

“Pumpkin”

✓ located verbatim in the source · title, characters 14–21 · show in text ↑
Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Average fruit weight declined at higher planting populations.

Taxon
Pumpkint0
Treatment
higher populationse0
Outcome
Average fruit weighte0
Direction
declinede0

Verbatim

e0

“Average fruit weight declined at the higher populations”

✓ located verbatim in the source · abstract, characters 419–474 · show in text ↑
t0

“Pumpkin”

✓ located verbatim in the source · title, characters 14–21 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Large vine genotypes responded more strongly to planting density than bush types.

Taxon
Pumpkint0
Material
large vine typese0
Outcome
responsee0
Direction
pronouncede0
Comparator
bush typee0

Verbatim

e0

“the response was pronounced in large vine types compared to bush type”

✓ located verbatim in the source · abstract, characters 586–655 · show in text ↑
t0

“Pumpkin”

✓ located verbatim in the source · title, characters 14–21 · show in text ↑
Observationauthor interpretationoriginal resultmeasured

Claim · model-written summary

The authors interpreted phenotypic yield variation among pumpkin genotypes as genetically controlled.

Taxon
pumpkine0
Outcome
phenotypic variatione0

Verbatim

e0

“The phenotypic variation existed among pumpkin genotypes for yield seems to be under genetic control”

✓ located verbatim in the source · abstract, characters 657–757 · show in text ↑
Intervention effectobservedoriginal resultpositivenot significant (as stated)measured

Claim · model-written summary

Foliar potassium improved pumpkin growth without a statistically significant effect.

Taxon
pumpkine0
Treatment
Foliar application of potassiume0
Outcome
growthe0
Direction
improvede0

Not reportedComparator

Verbatim

e0

“Foliar application of potassium improved growth and yield of pumpkin plants although the non-significant effect”

✓ located verbatim in the source · abstract, characters 759–870 · show in text ↑
Intervention effectobservedoriginal resultpositivenot significant (as stated)measured

Claim · model-written summary

Foliar potassium improved pumpkin yield without a statistically significant effect.

Taxon
pumpkine0
Treatment
Foliar application of potassiume0
Outcome
yielde0
Direction
improvede0

Not reportedComparator

Verbatim

e0

“Foliar application of potassium improved growth and yield of pumpkin plants although the non-significant effect”

✓ located verbatim in the source · abstract, characters 759–870 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors recommend increasing plant populations to increase pumpkin yield.

Taxon
pumpkine0
Outcome
increase pumpkin yield by increasing plant populationse0

Verbatim

e0

“growers may increase pumpkin yield by increasing plant populations”

✓ located verbatim in the source · abstract, characters 903–969 · show in text ↑

potassium · yield · Cucurbita (pumpkins)Positive and negative results

8 papers: 7 positive, 1 negative or no effect

6 papers in the same direction as this paper · 1 in the opposite direction

  1. positive
  2. no effect
  3. positive

4 papers more in this group

See all 8 papers →

application · growth · Cucurbita (pumpkins)Positive and negative results

22 papers: 20 positive, 2 negative or no effect

19 papers in the same direction as this paper · 2 in the opposite direction

  1. no effect
  2. negative
  3. positive

18 papers more in this group

See all 22 papers →

application · yield · Cucurbita (pumpkins)Positive and negative results

23 papers: 22 positive, 1 negative or no effect

21 papers in the same direction as this paper · 1 in the opposite direction

  1. negative
  2. positive
  3. positive

19 papers more in this group

See all 23 papers →

potassium · growth · Cucurbita (pumpkins)Results agree

4 papers: 4 positive, 0 negative or no effect

3 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive
See all 4 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.