Abstract
SUMMARY The effects of three planting patterns (ridge, furrow and flat) and three population densities (31800, 47600 and 71400 plants/ha) on the growth and yield of three sunflower hybrids, Flamme, Upsolveraflor and Isostar, were investigated at the Sultan Qaboos University Experiment Station, 1990–93. Seed and oil yields were higher in the ridge-planted sunflower than those planted in furrow or flat patterns, the order being ridge > flat > furrow. However, the magnitude of yield differences between ridge-planted and flat-planted sunflower was not sufficiently high to compensate for the additional labour and materials required for making ridges. Based on this, planting in the flat was recommended. Although increased population density resulted in taller plants, lodging was generally low and did not constitute a serious problem. Biomass/plant, head weight, receptacle weight, head diameter, number of seeds/head and 1000-seed weight decreased with increase in plant population density. Flamme had its highest seed and oil yield at 71400 plants/ha, while Isostar attained its highest yield at 47600 plants/ha. Isostar outyielded the other two hybrids and appeared to have a potential for commercial production in a desert climate.
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Claims 10
Claim · model-written summary
Seed and oil yields were higher in ridge-planted sunflower than in furrow or flat planting.
- Taxon
- sunflower
Helianthus annuust0 - Treatment
- ridge-plantede0
- Outcome
- Seed and oil yieldse0
- Direction
- highere0
- Comparator
- furrow or flat patternse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sunflower (Helianthus annuus)”
e0“Seed and oil yields were higher in the ridge-planted sunflower than those planted in furrow or flat patterns”
Claim · model-written summary
Planting in the flat was recommended, because the ridge yield advantage over flat planting did not compensate for the extra labour and materials.
- Taxon
- sunflowerHelianthus annuust0
- Outcome
- planting in the flate1
- Qualifier
- the magnitude of yield differences between ridge-planted and flat-planted sunflower was not sufficiently high to compensate for the additional labour and materials required for making ridgese2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sunflower (Helianthus annuus)”
e1“Based on this, planting in the flat was recommended”
e2“the magnitude of yield differences between ridge-planted and flat-planted sunflower was not sufficiently high to compensate for the additional labour and materials required for making ridges”
Claim · model-written summary
Increased plant population density resulted in taller sunflower plants.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- increased population densitye3
- Outcome
- taller plantse3
- Direction
- tallere3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sunflower (Helianthus annuus)”
e3“Although increased population density resulted in taller plants”
Claim · model-written summary
Lodging of sunflower was generally low and did not constitute a serious problem.
- Taxon
- sunflowerHelianthus annuust0
- Outcome
- lodginge4
- Qualifier
- generally low and did not constitute a serious probleme4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sunflower (Helianthus annuus)”
e4“lodging was generally low and did not constitute a serious problem”
Claim · model-written summary
Biomass per plant, head weight and receptacle weight decreased with increasing plant population density.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- increase in plant population densitye5
- Outcome
- Biomass/plant, head weight, receptacle weighte5
- Direction
- decreasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sunflower (Helianthus annuus)”
e5“Biomass/plant, head weight, receptacle weight, head diameter, number of seeds/head and 1000-seed weight decreased with increase in plant population density”
Claim · model-written summary
Head diameter, seeds per head and 1000-seed weight decreased with increasing plant population density.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- increase in plant population densitye5
- Outcome
- head diameter, number of seeds/head and 1000-seed weighte5
- Direction
- decreasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sunflower (Helianthus annuus)”
e5“Biomass/plant, head weight, receptacle weight, head diameter, number of seeds/head and 1000-seed weight decreased with increase in plant population density”
Claim · model-written summary
Flamme had its highest seed and oil yield at 71400 plants/ha.
- Taxon
- sunflowerHelianthus annuust0
- Material
- Flammee6
- Treatment
- 71400 plants/hae6
- Outcome
- seed and oil yielde6
- Direction
- higheste6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sunflower (Helianthus annuus)”
e6“Flamme had its highest seed and oil yield at 71400 plants/ha”
Claim · model-written summary
Isostar had its highest yield at 47600 plants/ha.
- Taxon
- sunflowerHelianthus annuust0
- Material
- Isostare7
- Treatment
- 47600 plants/hae7
- Outcome
- yielde7
- Direction
- higheste7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sunflower (Helianthus annuus)”
e7“Isostar attained its highest yield at 47600 plants/ha”
Claim · model-written summary
Isostar outyielded the other two hybrids.
- Taxon
- sunflowerHelianthus annuust0
- Material
- Isostare0
- Outcome
- yielde0
- Direction
- outyieldede0
- Comparator
- the other two hybridse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sunflower (Helianthus annuus)”
e0“Isostar outyielded the other two hybrids”
Claim · model-written summary
Isostar appears to have a potential for commercial production in a desert climate.
- Taxon
- sunflowerHelianthus annuust0
- Material
- Isostare0
- Outcome
- potential for commercial productione1
- Setting
- desert climatee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sunflower (Helianthus annuus)”
e0“Isostar outyielded the other two hybrids”
e1“appeared to have a potential for commercial production in a desert climate”
The same questions in other papers
density · yield · Helianthus annuus (common sunflower)Positive and negative results
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