Abstract
Pumpkin (Cucurbita pepo L.) young leaves and vines are consumed as vegetables among the rural dwellers in Southwest Nigeria. It is a cheap source of protein, vitamins, fibres and antioxidants in their diet. Due to the intensive cultivation of available lands which affects the nutrient status of most soils and their productivity, the need to apply fertilizer on pumpkin became pertinent. Therefore, nitrogen, phosphorus and potassium (NPK) fertilizer influence on biomass accumulation in pumpkin was investigated for two consecutive seasons in 2010 at the Research Farm of Obafemi Awolowo University, Ile-Ife, Nigeria. NPK (15:15:15) compound fertilizer was applied at the rates of (0, 50, 100, 150, 200 and 250 kg ha-1) to C. pepo at 2 weeks after planting (WAP). At 8 WAP, the following morpho-physiological traits: vine length, vine diameter, number of internodes, internodes length, vine weight, number of leaves, total fresh and dry biomass assessed were significantly influenced by season and fertilizer effects. The combined analysis of variance (ANOVA) results showed that the effects of season (S) and fertilizer (F) are significant effect on all the traits. Season effect showed that the early season was better (p = 0.05) while the application of fertilizer beyond 100 kg of NPK per hectare was not statistically beneficial for biomass yield and its components. However, the significant S X F interaction on the total dry matter fitted well into a quadratic equation with significant R2 values. The response curves showed higher response to fertilizer in the early than late planting season and a maximum biomass yield was attained at the application of 205 kg and 244 kg ha-1 of NPK (15-15-15) for early and late season cultivations, respectively. Key words: Biomass, nitrogen, phosphorus and potassium (NPK) fertilizer, pumpkin, dry matter, morpho-physiological trait, quadratic equation.
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Claims 7
Claim · model-written summary
Season and fertilizer significantly affected pumpkin vine and biomass traits.
- Taxon
- Pumpkin (Cucurbita pepo L.)
Cucurbita pepoe1 - Organ / stage
- At 8 WAPe0
- Treatment
- season and fertilizer effectse0
- Outcome
- vine length, vine diameter, number of internodese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At 8 WAP, the following morpho-physiological traits: vine length, vine diameter, number of internodes, internodes length, vine weight, number of leaves, total fresh and dry biomass assessed were significantly influenced by season and fertilizer effects”
e1“Pumpkin (Cucurbita pepo L.) young leaves and vines”
Claim · model-written summary
The early planting season gave better pumpkin traits than the late season.
- Taxon
- Pumpkin (Cucurbita pepo L.)Cucurbita pepoe1
- Treatment
- early seasone0
- Outcome
- bettere0
- Direction
- bettere0
- Value
- p = 0.05e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Season effect showed that the early season was better (p = 0.05)”
e1“Pumpkin (Cucurbita pepo L.) young leaves and vines”
Claim · model-written summary
NPK application above 100 kg per hectare did not yield a statistically beneficial increase in pumpkin biomass or its components.
- Taxon
- Pumpkin (Cucurbita pepo L.)Cucurbita pepoe1
- Treatment
- fertilizer beyond 100 kg of NPK per hectaree0
- Outcome
- biomass yield and its componentse0
- Direction
- not statistically beneficiale0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the application of fertilizer beyond 100 kg of NPK per hectare was not statistically beneficial for biomass yield and its components”
e1“Pumpkin (Cucurbita pepo L.) young leaves and vines”
Claim · model-written summary
The season-by-fertilizer interaction for total dry matter fit a quadratic equation with significant R2 values.
- Taxon
- Pumpkin (Cucurbita pepo L.)Cucurbita pepoe1
- Treatment
- S X F interactione0
- Outcome
- total dry mattere0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the significant S X F interaction on the total dry matter fitted well into a quadratic equation with significant R2 values”
e1“Pumpkin (Cucurbita pepo L.) young leaves and vines”
Claim · model-written summary
Pumpkin responded more strongly to fertilizer in the early planting season than in the late season.
- Taxon
- Pumpkin (Cucurbita pepo L.)Cucurbita pepoe1
- Treatment
- fertilizere0
- Outcome
- response to fertilizere0
- Direction
- highere0
- Comparator
- late planting seasone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The response curves showed higher response to fertilizer in the early than late planting season”
e1“Pumpkin (Cucurbita pepo L.) young leaves and vines”
Claim · model-written summary
The modeled maximum pumpkin biomass yield occurred at 205 kg NPK per hectare in early cultivation.
- Taxon
- Pumpkin (Cucurbita pepo L.)Cucurbita pepoe1
- Outcome
- maximum biomass yielde0
- Direction
- maximume0
- Value
- 205 kge0
- Qualifier
- earlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a maximum biomass yield was attained at the application of 205 kg and 244 kg ha-1 of NPK (15-15-15) for early and late season cultivations, respectively”
e1“Pumpkin (Cucurbita pepo L.) young leaves and vines”
Claim · model-written summary
The modeled maximum pumpkin biomass yield occurred at 244 kg ha-1 NPK in late cultivation.
- Taxon
- Pumpkin (Cucurbita pepo L.)Cucurbita pepoe1
- Outcome
- maximum biomass yielde0
- Direction
- maximume0
- Value
- 244 kg ha-1e0
- Qualifier
- late season cultivationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a maximum biomass yield was attained at the application of 205 kg and 244 kg ha-1 of NPK (15-15-15) for early and late season cultivations, respectively”
e1“Pumpkin (Cucurbita pepo L.) young leaves and vines”
The same questions in other papers
fertilization · yield · Cucurbita pepoPositive and negative results
2 papers in the same direction as this paper · 28 in the opposite direction
- positive
- positive
- positive
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See all 31 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.