Abstract
Two field experiments were conducted during two growing seasons of2010 and 2011 at Kaha Horticulture Research Station (Qalubia Governorate) to study the effect of sowing dates and plant populations (density and distribution) on growth, dry seed production potentiality and its quality of cowpea cv. Kaha 1. The treatments consisted of combination between three times of sowing i.e. 1st May, 1st June; 1st July and six plant populations i.e. 20, 13 and10 plants/ m2, on one side per row, with 50 cm row spacing as well as 28, 20 and14 plants/m2, on two sides per row, with 70 cm row spacing. The experiment was laid out in split plot design with three replications. Cowpea sown on 1st May recorded significant higher values of growth parameters i.e. plant height, number of leaves, number of branches, leaf area and dry weight/plant as well as seed yield and its components compared to the sown date of 1st July. The results showed that high plant density recorded higher values for plant height and low values in the number of leaves, branches and leaf area in addition to the plant dry weight, while the results were just the opposite in the low-density. The results showed that dry cowpea seed yield increased by increasing plant density, especially with the distribution plants on both sides of the width row. But there was a significant increase in the yield components by low number of plants per unit area. The results showed that the interaction between sowing dates and plant density was significant for yield and its components and the highest values of dry seed yield resulted from sowing in 1st May with the number of plants, 28 plants per square meter and sowing on both sides of the row width of 70 cm.
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Claims 10
Claim · model-written summary
May sowing increased growth traits relative to July sowing.
- Taxon
- Cowpea
Vigna unguiculatae0 - Treatment
- 1st Maye0
- Outcome
- plant height, number of leaves, number of branchese0
- Direction
- highere0
- Comparator
- 1st Julye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cowpea sown on 1st May recorded significant higher values of growth parameters i.e. plant height, number of leaves, number of branches, leaf area and dry weight/plant as well as seed yield and its components compared to the sown date of 1st July.”
Claim · model-written summary
May sowing increased leaf area and dry weight per plant relative to July.
- Taxon
- CowpeaVigna unguiculatae0
- Treatment
- 1st Maye0
- Outcome
- leaf area and dry weight/plante0
- Direction
- highere0
- Comparator
- 1st Julye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cowpea sown on 1st May recorded significant higher values of growth parameters i.e. plant height, number of leaves, number of branches, leaf area and dry weight/plant as well as seed yield and its components compared to the sown date of 1st July.”
Claim · model-written summary
May sowing increased seed yield and its components relative to July.
- Taxon
- CowpeaVigna unguiculatae0
- Treatment
- 1st Maye0
- Outcome
- seed yield and its componentse0
- Direction
- highere0
- Comparator
- 1st Julye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cowpea sown on 1st May recorded significant higher values of growth parameters i.e. plant height, number of leaves, number of branches, leaf area and dry weight/plant as well as seed yield and its components compared to the sown date of 1st July.”
Claim · model-written summary
High plant density increased plant height.
- Taxon
- COWPEAVigna unguiculatat0
- Treatment
- high plant densitye0
- Outcome
- plant heighte0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high plant density recorded higher values for plant height”
t0“COWPEA”
Claim · model-written summary
High plant density reduced leaves, branches and leaf area.
- Taxon
- COWPEAVigna unguiculatat0
- Treatment
- high plant densitye0
- Outcome
- number of leaves, branches and leaf areae0
- Direction
- low valuese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high plant density recorded higher values for plant height and low values in the number of leaves, branches and leaf area in addition to the plant dry weight”
t0“COWPEA”
Claim · model-written summary
High plant density reduced plant dry weight.
- Taxon
- COWPEAVigna unguiculatat0
- Treatment
- high plant densitye0
- Outcome
- plant dry weighte0
- Direction
- low valuese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high plant density recorded higher values for plant height and low values in the number of leaves, branches and leaf area in addition to the plant dry weight”
t0“COWPEA”
Claim · model-written summary
Dry cowpea seed yield increased with plant density, especially when planted on both row sides.
- Taxon
- cowpeaVigna unguiculatae0
- Treatment
- increasing plant densitye0
- Outcome
- dry cowpea seed yielde0
- Direction
- increasede0
- Qualifier
- both sides of the width rowe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“dry cowpea seed yield increased by increasing plant density, especially with the distribution plants on both sides of the width row”
Claim · model-written summary
Lower plant numbers significantly increased yield components.
- Taxon
- COWPEAVigna unguiculatat0
- Treatment
- low number of plants per unit areae0
- Outcome
- yield componentse0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was a significant increase in the yield components by low number of plants per unit area”
t0“COWPEA”
Claim · model-written summary
Sowing date and density interacted significantly for yield and its components.
- Taxon
- COWPEAVigna unguiculatat0
- Treatment
- sowing dates and plant densitye0
- Outcome
- yield and its componentse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the interaction between sowing dates and plant density was significant for yield and its components”
t0“COWPEA”
Claim · model-written summary
May sowing at 28 plants per square meter on both sides of 70 cm rows gave the highest dry seed yield.
- Taxon
- COWPEAVigna unguiculatat0
- Treatment
- sowing in 1st May with the number of plants, 28 plants per square meter and sowing on both sides of the row width of 70 cme0
- Outcome
- dry seed yielde0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest values of dry seed yield resulted from sowing in 1st May with the number of plants, 28 plants per square meter and sowing on both sides of the row width of 70 cm”
t0“COWPEA”
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