Abstract
The impact of sowing dates (early, normal and late) on the crop physiological parameters (leaf area index (LAI), chlorophyll content (SPAD)) and yield of sunflower cultivars (NK Neoma, NK Ferti, PR64H42) was observed in 2012, 2013, and 2014 on chernozem soil in Eastern Hungary. The obtained LAImax values were 5.1-5.3 m2/m2 (early sowing date), 4.5-5.2 m2/m2 (normal sowing date) and 4.4-5.2 m2/m2 (late sowing date). Pearson's correlation analysis revealed a close negative correlation between LAImax and sowing date in 2013 and 2014 (r = -0.920**,r = -0.813**) and an average, non-significant correlation between LAImax and sunflower yield (r = 0.575ns, r = 0.509ns). The relative chlorophyll content was not significantly affected by either growing year, sowing date or genotype in the period between May and July (~40). In the case of high infection index (Ii) values (2012), sunflower cultivars had the highest yield in the late sowing date (4.3-5.3 t/ha). However, average Ii values (2013) were associated with the highest yields in normal sowing date (5.1-5.3 t/ha) and moderate Ii values (2014) showed the highest yields in early sowing dates (4.6-5.1 t/ha).
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Claims 12
Claim · model-written summary
LAImax on the early sowing date was 5.1-5.3 m2/m2 in sunflower.
- Taxon
- sunflower
Helianthus annuust0 - Material
- NK Neoma, NK Ferti, PR64H42e0
- Treatment
- early sowing datee1
- Outcome
- LAImaxe1
- Value
- 5.1-5.3 m2/m2e1
- Setting
- chernozem soil in Eastern Hungarye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“yield in sunflower”
e0“The impact of sowing dates (early, normal and late) on the crop physiological parameters (leaf area index (LAI), chlorophyll content (SPAD)) and yield of sunflower cultivars (NK Neoma, NK Ferti, PR64H42) was observed in 2012, 2013, and 2014 on chernozem soil in Eastern Hungary”
e1“The obtained LAImax values were 5.1-5.3 m2/m2 (early sowing date), 4.5-5.2 m2/m2 (normal sowing date) and 4.4-5.2 m2/m2 (late sowing date)”
Claim · model-written summary
LAImax on the normal sowing date was 4.5-5.2 m2/m2 in sunflower.
- Taxon
- sunflowerHelianthus annuust0
- Material
- NK Neoma, NK Ferti, PR64H42e0
- Treatment
- normal sowing datee1
- Outcome
- LAImaxe1
- Value
- 4.5-5.2 m2/m2e1
- Setting
- chernozem soil in Eastern Hungarye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“yield in sunflower”
e0“The impact of sowing dates (early, normal and late) on the crop physiological parameters (leaf area index (LAI), chlorophyll content (SPAD)) and yield of sunflower cultivars (NK Neoma, NK Ferti, PR64H42) was observed in 2012, 2013, and 2014 on chernozem soil in Eastern Hungary”
e1“The obtained LAImax values were 5.1-5.3 m2/m2 (early sowing date), 4.5-5.2 m2/m2 (normal sowing date) and 4.4-5.2 m2/m2 (late sowing date)”
Claim · model-written summary
LAImax on the late sowing date was 4.4-5.2 m2/m2 in sunflower.
- Taxon
- sunflowerHelianthus annuust0
- Material
- NK Neoma, NK Ferti, PR64H42e0
- Treatment
- late sowing datee1
- Outcome
- LAImaxe1
- Value
- 4.4-5.2 m2/m2e1
- Setting
- chernozem soil in Eastern Hungarye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“yield in sunflower”
e0“The impact of sowing dates (early, normal and late) on the crop physiological parameters (leaf area index (LAI), chlorophyll content (SPAD)) and yield of sunflower cultivars (NK Neoma, NK Ferti, PR64H42) was observed in 2012, 2013, and 2014 on chernozem soil in Eastern Hungary”
e1“The obtained LAImax values were 5.1-5.3 m2/m2 (early sowing date), 4.5-5.2 m2/m2 (normal sowing date) and 4.4-5.2 m2/m2 (late sowing date)”
Claim · model-written summary
LAImax correlated negatively with sowing date in 2013 (r = -0.920).
- Taxon
- sunflowerHelianthus annuust0
- Material
- NK Neoma, NK Ferti, PR64H42e0
- Treatment
- sowing datee4
- Outcome
- LAImaxe4
- Direction
- negativee4
- Value
- r = -0.920e4
- Qualifier
- in 2013 and 2014e4
- Setting
- chernozem soil in Eastern Hungarye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“yield in sunflower”
e0“The impact of sowing dates (early, normal and late) on the crop physiological parameters (leaf area index (LAI), chlorophyll content (SPAD)) and yield of sunflower cultivars (NK Neoma, NK Ferti, PR64H42) was observed in 2012, 2013, and 2014 on chernozem soil in Eastern Hungary”
e4“Pearson's correlation analysis revealed a close negative correlation between LAImax and sowing date in 2013 and 2014 (r = -0.920**,r = -0.813**)”
Claim · model-written summary
LAImax correlated negatively with sowing date in 2014 (r = -0.813).
- Taxon
- sunflowerHelianthus annuust0
- Material
- NK Neoma, NK Ferti, PR64H42e0
- Treatment
- sowing datee4
- Outcome
- LAImaxe4
- Direction
- negativee4
- Value
- r = -0.813e4
- Qualifier
- in 2013 and 2014e4
- Setting
- chernozem soil in Eastern Hungarye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“yield in sunflower”
e0“The impact of sowing dates (early, normal and late) on the crop physiological parameters (leaf area index (LAI), chlorophyll content (SPAD)) and yield of sunflower cultivars (NK Neoma, NK Ferti, PR64H42) was observed in 2012, 2013, and 2014 on chernozem soil in Eastern Hungary”
e4“Pearson's correlation analysis revealed a close negative correlation between LAImax and sowing date in 2013 and 2014 (r = -0.920**,r = -0.813**)”
Claim · model-written summary
Average correlation between LAImax and sunflower yield was non-significant (r = 0.575 and 0.509).
- Taxon
- sunflowerHelianthus annuust0
- Material
- NK Neoma, NK Ferti, PR64H42e0
- Treatment
- LAImaxe5
- Outcome
- sunflower yielde5
- Direction
- no_changeinferrede5
- Value
- r = 0.575ns, r = 0.509nse5
- Qualifier
- average, non-significante5
- Setting
- chernozem soil in Eastern Hungarye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“yield in sunflower”
e0“The impact of sowing dates (early, normal and late) on the crop physiological parameters (leaf area index (LAI), chlorophyll content (SPAD)) and yield of sunflower cultivars (NK Neoma, NK Ferti, PR64H42) was observed in 2012, 2013, and 2014 on chernozem soil in Eastern Hungary”
e5“an average, non-significant correlation between LAImax and sunflower yield (r = 0.575ns, r = 0.509ns)”
Claim · model-written summary
Relative chlorophyll content was not significantly affected by sowing date (about 40 SPAD units).
- Taxon
- sunflowerHelianthus annuust0
- Material
- NK Neoma, NK Ferti, PR64H42e0
- Treatment
- sowing datee6
- Outcome
- relative chlorophyll contente6
- Direction
- no_changeinferrede6
- Value
- ~40e6
- Qualifier
- in the period between May and Julye6
- Setting
- chernozem soil in Eastern Hungarye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“yield in sunflower”
e0“The impact of sowing dates (early, normal and late) on the crop physiological parameters (leaf area index (LAI), chlorophyll content (SPAD)) and yield of sunflower cultivars (NK Neoma, NK Ferti, PR64H42) was observed in 2012, 2013, and 2014 on chernozem soil in Eastern Hungary”
e6“The relative chlorophyll content was not significantly affected by either growing year, sowing date or genotype in the period between May and July (~40)”
Claim · model-written summary
Relative chlorophyll content was not significantly affected by growing year.
- Taxon
- sunflowerHelianthus annuust0
- Material
- NK Neoma, NK Ferti, PR64H42e0
- Treatment
- growing yeare6
- Outcome
- relative chlorophyll contente6
- Direction
- no_changeinferrede6
- Value
- ~40e6
- Qualifier
- in the period between May and Julye6
- Setting
- chernozem soil in Eastern Hungarye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“yield in sunflower”
e0“The impact of sowing dates (early, normal and late) on the crop physiological parameters (leaf area index (LAI), chlorophyll content (SPAD)) and yield of sunflower cultivars (NK Neoma, NK Ferti, PR64H42) was observed in 2012, 2013, and 2014 on chernozem soil in Eastern Hungary”
e6“The relative chlorophyll content was not significantly affected by either growing year, sowing date or genotype in the period between May and July (~40)”
Claim · model-written summary
Relative chlorophyll content was not significantly affected by genotype.
- Taxon
- sunflowerHelianthus annuust0
- Material
- NK Neoma, NK Ferti, PR64H42e0
- Treatment
- genotypee6
- Outcome
- relative chlorophyll contente6
- Direction
- no_changeinferrede6
- Value
- ~40e6
- Qualifier
- in the period between May and Julye6
- Setting
- chernozem soil in Eastern Hungarye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“yield in sunflower”
e0“The impact of sowing dates (early, normal and late) on the crop physiological parameters (leaf area index (LAI), chlorophyll content (SPAD)) and yield of sunflower cultivars (NK Neoma, NK Ferti, PR64H42) was observed in 2012, 2013, and 2014 on chernozem soil in Eastern Hungary”
e6“The relative chlorophyll content was not significantly affected by either growing year, sowing date or genotype in the period between May and July (~40)”
Claim · model-written summary
In 2012 with high infection index, sunflower yield was highest in the late sowing date (4.3-5.3 t/ha).
- Taxon
- sunflowerHelianthus annuust0
- Material
- NK Neoma, NK Ferti, PR64H42e0
- Treatment
- late sowing datee7
- Outcome
- yielde7
- Direction
- higheste7
- Value
- 4.3-5.3 t/hae7
- Qualifier
- high infection index (Ii) values (2012)e7
- Setting
- chernozem soil in Eastern Hungarye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“yield in sunflower”
e0“The impact of sowing dates (early, normal and late) on the crop physiological parameters (leaf area index (LAI), chlorophyll content (SPAD)) and yield of sunflower cultivars (NK Neoma, NK Ferti, PR64H42) was observed in 2012, 2013, and 2014 on chernozem soil in Eastern Hungary”
e7“In the case of high infection index (Ii) values (2012), sunflower cultivars had the highest yield in the late sowing date (4.3-5.3 t/ha)”
Claim · model-written summary
In 2013 with average infection index, sunflower yields were highest in the normal sowing date (5.1-5.3 t/ha).
- Taxon
- sunflowerHelianthus annuust0
- Material
- NK Neoma, NK Ferti, PR64H42e0
- Treatment
- normal sowing datee2
- Outcome
- yieldse2
- Direction
- higheste2
- Value
- 5.1-5.3 t/hae2
- Qualifier
- average Ii values (2013)e2
- Setting
- chernozem soil in Eastern Hungarye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“yield in sunflower”
e0“The impact of sowing dates (early, normal and late) on the crop physiological parameters (leaf area index (LAI), chlorophyll content (SPAD)) and yield of sunflower cultivars (NK Neoma, NK Ferti, PR64H42) was observed in 2012, 2013, and 2014 on chernozem soil in Eastern Hungary”
e2“However, average Ii values (2013) were associated with the highest yields in normal sowing date (5.1-5.3 t/ha)”
Claim · model-written summary
In 2014 with moderate infection index, sunflower yields were highest in the early sowing dates (4.6-5.1 t/ha).
- Taxon
- sunflowerHelianthus annuust0
- Material
- NK Neoma, NK Ferti, PR64H42e0
- Treatment
- early sowing datese3
- Outcome
- yieldse3
- Direction
- higheste3
- Value
- 4.6-5.1 t/hae3
- Qualifier
- moderate Ii values (2014)e3
- Setting
- chernozem soil in Eastern Hungarye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“yield in sunflower”
e0“The impact of sowing dates (early, normal and late) on the crop physiological parameters (leaf area index (LAI), chlorophyll content (SPAD)) and yield of sunflower cultivars (NK Neoma, NK Ferti, PR64H42) was observed in 2012, 2013, and 2014 on chernozem soil in Eastern Hungary”
e3“moderate Ii values (2014) showed the highest yields in early sowing dates (4.6-5.1 t/ha)”
The same questions in other papers
sowing time · physiology: pigments · Helianthus annuus (common sunflower)Positive and negative results
1 in the opposite direction
- positive
sowing time · yield · Helianthus annuus (common sunflower)Positive and negative results
38 papers in the same direction as this paper · 13 in the opposite direction · 1 reporting no difference from an alternative
- positive
- negative
- negative
49 papers more in this group
See all 53 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.