Abstract
This investigation was carried out at the Experimental Farm of Assiut University during the summers of 2000 and 2001 to study the responses of two sunflower hybrids (Vidoc and Euroflora) to planting dates (May 1 st , June 1 st and July 1 st ) and planting densities (55,533, 83,300 and 166,600 plants/ha). The results indicated that the two varieties differed highly significantly in all studied traits except oil yield/ha. The highest seed yield (3.64 t/ha) was obtained with the variety Vidoc. In addition, the results revealed that the planting date exerted a highly significant influence on all vegetative growth traits along with yield and its components. Increasing plant density increased the seed and oil yield/ha. By contrast, the stem diameter, head diameter, 100-seed weight and seed yield/plant decreased with increasing plant density. The interaction between varieties and plant density had a highly significant effect on head diameter. The greatest head diameter (20.06 cm) was recorded for the variety Vidoc planted at lower density. Concerning the interaction between planting density and planting date, the highest seed yield (4.47 t/ha) was obtained from dense plants at the early sowing date, and the highest oil % (45.32) at the late planting date and the lowest plant density. The second order interaction exerted a highly significant influence on stem and head diameter in addition to seed yield/plant, where the highest value (78.13 g/plant) was obtained with the variety Vidoc planted on May 1 st at the lowest plant density.
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Claims 13
Claim · model-written summary
The two sunflower varieties differed highly significantly in all studied traits
- Taxon
- sunflower
Helianthus annuust0 - Material
- two varietiese1
- Outcome
- all studied traitse1
- Setting
- Experimental Farm of Assiut Universitye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Response of two sunflower hybrids to planting dates and densities”
e0“This investigation was carried out at the Experimental Farm of Assiut University during the summers of 2000 and 2001”
e1“The results indicated that the two varieties differed highly significantly in all studied traits except oil yield/ha”
Claim · model-written summary
Oil yield per hectare did not differ between the two sunflower varieties
- Taxon
- sunflowerHelianthus annuust0
- Material
- two varietiese1
- Outcome
- oil yield/hae1
- Setting
- Experimental Farm of Assiut Universitye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Response of two sunflower hybrids to planting dates and densities”
e0“This investigation was carried out at the Experimental Farm of Assiut University during the summers of 2000 and 2001”
e1“The results indicated that the two varieties differed highly significantly in all studied traits except oil yield/ha”
Claim · model-written summary
Planting date had a highly significant influence on vegetative growth traits, yield and yield components of sunflower
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- planting datee3
- Outcome
- all vegetative growth traits along with yield and its componentse3
- Setting
- Experimental Farm of Assiut Universitye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Response of two sunflower hybrids to planting dates and densities”
e0“This investigation was carried out at the Experimental Farm of Assiut University during the summers of 2000 and 2001”
e3“the planting date exerted a highly significant influence on all vegetative growth traits along with yield and its components”
Claim · model-written summary
The Vidoc hybrid gave the highest seed yield, 3.64 t/ha
- Taxon
- sunflowerHelianthus annuust0
- Material
- Vidoce2
- Outcome
- seed yielde2
- Direction
- higheste2
- Value
- 3.64 t/hae2
- Setting
- Experimental Farm of Assiut Universitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Response of two sunflower hybrids to planting dates and densities”
e0“This investigation was carried out at the Experimental Farm of Assiut University during the summers of 2000 and 2001”
e2“The highest seed yield (3.64 t/ha) was obtained with the variety Vidoc”
Claim · model-written summary
Increasing plant density increased seed and oil yield per hectare of sunflower
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- Increasing plant densitye4
- Outcome
- seed and oil yield/hae4
- Direction
- increasede4
- Setting
- Experimental Farm of Assiut Universitye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Response of two sunflower hybrids to planting dates and densities”
e0“This investigation was carried out at the Experimental Farm of Assiut University during the summers of 2000 and 2001”
e4“Increasing plant density increased the seed and oil yield/ha”
Claim · model-written summary
Increasing plant density decreased stem diameter, head diameter and 100-seed weight of sunflower
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- increasing plant densitye5
- Outcome
- stem diameter, head diameter, 100-seed weighte5
- Direction
- decreasede5
- Setting
- Experimental Farm of Assiut Universitye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Response of two sunflower hybrids to planting dates and densities”
e0“This investigation was carried out at the Experimental Farm of Assiut University during the summers of 2000 and 2001”
e5“By contrast, the stem diameter, head diameter, 100-seed weight and seed yield/plant decreased with increasing plant density”
Claim · model-written summary
Increasing plant density decreased seed yield per plant of sunflower
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- increasing plant densitye5
- Outcome
- seed yield/plante5
- Direction
- decreasede5
- Setting
- Experimental Farm of Assiut Universitye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Response of two sunflower hybrids to planting dates and densities”
e0“This investigation was carried out at the Experimental Farm of Assiut University during the summers of 2000 and 2001”
e5“By contrast, the stem diameter, head diameter, 100-seed weight and seed yield/plant decreased with increasing plant density”
Claim · model-written summary
The variety by plant density interaction had a highly significant effect on head diameter
- Taxon
- sunflowerHelianthus annuust0
- Material
- varietiese6
- Treatment
- plant densitye6
- Outcome
- head diametere6
- Setting
- Experimental Farm of Assiut Universitye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Response of two sunflower hybrids to planting dates and densities”
e0“This investigation was carried out at the Experimental Farm of Assiut University during the summers of 2000 and 2001”
e6“The interaction between varieties and plant density had a highly significant effect on head diameter”
Claim · model-written summary
The Vidoc variety at lower density had the greatest head diameter, 20.06 cm
- Taxon
- sunflowerHelianthus annuust0
- Material
- Vidoce7
- Treatment
- lower densitye7
- Outcome
- head diametere7
- Direction
- greateste7
- Value
- 20.06 cme7
- Setting
- Experimental Farm of Assiut Universitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Response of two sunflower hybrids to planting dates and densities”
e0“This investigation was carried out at the Experimental Farm of Assiut University during the summers of 2000 and 2001”
e7“The greatest head diameter (20.06 cm) was recorded for the variety Vidoc planted at lower density”
Claim · model-written summary
Dense sunflower plants sown at the early date gave the highest seed yield, 4.47 t/ha
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- dense plants at the early sowing datee1
- Outcome
- seed yielde1
- Direction
- higheste1
- Value
- 4.47 t/hae1
- Setting
- Experimental Farm of Assiut Universitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Response of two sunflower hybrids to planting dates and densities”
e0“This investigation was carried out at the Experimental Farm of Assiut University during the summers of 2000 and 2001”
e1“the highest seed yield (4.47 t/ha) was obtained from dense plants at the early sowing date”
Claim · model-written summary
Late planting at the lowest density gave the highest sunflower oil percentage, 45.32
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- the late planting date and the lowest plant densitye1
- Outcome
- oil %e1
- Direction
- higheste1
- Value
- 45.32e1
- Setting
- Experimental Farm of Assiut Universitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Response of two sunflower hybrids to planting dates and densities”
e0“This investigation was carried out at the Experimental Farm of Assiut University during the summers of 2000 and 2001”
e1“the highest oil % (45.32) at the late planting date and the lowest plant density”
Claim · model-written summary
The Vidoc variety sown on May 1 at the lowest density gave the highest seed yield per plant, 78.13 g/plant
- Taxon
- sunflowerHelianthus annuust0
- Material
- Vidoce1
- Treatment
- planted on May 1 st at the lowest plant densitye1
- Outcome
- seed yield/plante2
- Direction
- higheste1
- Value
- 78.13 g/plante1
- Setting
- Experimental Farm of Assiut Universitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Response of two sunflower hybrids to planting dates and densities”
e0“This investigation was carried out at the Experimental Farm of Assiut University during the summers of 2000 and 2001”
e1“the highest value (78.13 g/plant) was obtained with the variety Vidoc planted on May 1 st at the lowest plant density”
e2“The second order interaction exerted a highly significant influence on stem and head diameter in addition to seed yield/plant”
Claim · model-written summary
The second order interaction of variety, planting date and density had a highly significant influence on stem and head diameter
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- The second order interactione1
- Outcome
- stem and head diametere1
- Setting
- Experimental Farm of Assiut Universitye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Response of two sunflower hybrids to planting dates and densities”
e0“This investigation was carried out at the Experimental Farm of Assiut University during the summers of 2000 and 2001”
e1“The second order interaction exerted a highly significant influence on stem and head diameter in addition to seed yield/plant”
The same questions in other papers
density · quality: oil · Helianthus annuus (common sunflower)Positive and negative results
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- no effect
- no effect
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21 papers more in this group
See all 25 papers →density · yield · Helianthus annuus (common sunflower)Positive and negative results
14 papers in the same direction as this paper · 70 in the opposite direction
- positive
- positive
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See all 85 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.