Abstract
Summary An experiment was conducted over a 2-year period at two sites in the central rainlands of Sudan under rainfed conditions at one location and under supplementary irrigation at the other to investigate the effects of cultivars and spacing on yield and yield components of sunflower. Row spacing had no significant effect on grain yield under either system of production. Under rainfed conditions, the late maturing cultivar Manchurian performed better under wider row spacing than Hungarian-A which is a medium late maturing variety. Size and number of seeds weie significantly affected by row width. It is argued that the choice of a row spacing for sunflower production on a commercial scale in dry regions should be evaluated in association with machine efficiency which is affected by plant height, stem circumference, head diameter and lodging, all of which were significantly affected by row width. Also the number of plants established per unit area of land differed between systems of farming.
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Claims 8
Claim · model-written summary
Row spacing had no significant effect on sunflower grain yield in either system.
- Taxon
- sunflower
Helianthus annuust0 - Treatment
- Row spacinge0
- Outcome
- grain yielde0
- Direction
- no significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Row spacing had no significant effect on grain yield under either system of production.”
t0“sunflower”
Claim · model-written summary
Under rainfed conditions, Manchurian performed better at wider spacing than Hungarian-A.
- Taxon
- sunflowerHelianthus annuust0
- Material
- Manchuriane0
- Treatment
- wider row spacinge0
- Outcome
- performed bettere0
- Direction
- bettere0
- Comparator
- Hungarian-Ae0
- Setting
- rainfed conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under rainfed conditions, the late maturing cultivar Manchurian performed better under wider row spacing than Hungarian-A”
t0“sunflower”
Claim · model-written summary
Seed size was significantly affected by row width.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- row widthe0
- Outcome
- Sizee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Size and number of seeds weie significantly affected by row width.”
t0“sunflower”
Claim · model-written summary
Seed number was significantly affected by row width.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- row widthe0
- Outcome
- number of seedse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Size and number of seeds weie significantly affected by row width.”
t0“sunflower”
Claim · model-written summary
Plant height, stem circumference and head diameter were significantly affected by row width.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- row widthe0
- Outcome
- plant height, stem circumference, head diametere0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plant height, stem circumference, head diameter and lodging, all of which were significantly affected by row width”
t0“sunflower”
Claim · model-written summary
Lodging was significantly affected by row width.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- row widthe0
- Outcome
- lodginge0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plant height, stem circumference, head diameter and lodging, all of which were significantly affected by row width”
t0“sunflower”
Claim · model-written summary
Established plants per unit area differed between farming systems.
- Taxon
- sunflowerHelianthus annuust0
- Outcome
- number of plants established per unit area of lande0
- Direction
- differede0
- Comparator
- systems of farminge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the number of plants established per unit area of land differed between systems of farming.”
t0“sunflower”
Claim · model-written summary
Commercial sunflower row spacing in dry regions should be evaluated alongside machine efficiency.
- Taxon
- sunflowerHelianthus annuuse0
- Outcome
- choice of a row spacinge0
- Qualifier
- machine efficiencye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the choice of a row spacing for sunflower production on a commercial scale in dry regions should be evaluated in association with machine efficiency”
The same questions in other 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
- positive
81 papers more in this group
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.