Abstract
This experiment was conducted to find the influence of organic manure sources and chemical fertilizers alone or in combination on the quality and yield of sunflower and also on the macro nutrients content of seeds under water stress. Three levels of water stress (S1: full irrigation, S2: withholding irrigation at flowering stage, and S3: withholding irrigation at seed filling stage) were randomized to the main plot units and 8 fertilizer treatments (F1: control, F2: cattle manure, F3: sheep manure, F4: poultry manure, F5: chemical fertilizer, F6: 50% cattle manure+50% chemical fertilizer, F7: 50% sheep manure+50% chemical fertilizer, and F8: 50% poultry manure+50% chemical fertilizer) were randomized to the subplot units. Obtained results revealed that seed yield decreased significantly due to water stress when imposed at either of the growth stages. Assessment of the qualitative parameters of sunflower seeds showed that water stress caused a marked decrease in oil content and unsaturated fatty acids of oil, however this negative effect was greater in water stress at seed filling stage with respect to water stress at flowering stage. While, protein content increased due to water stress at flowering stage. Results also indicated that drought stress at seed filling stage significantly decreased nutrient content of the seeds, whereas drought stress at flowering stage caused to increase of nutrient uptake. Sunflower plants significantly responded to fertilizer treatments. The seed yield was highest in case of application of manure alone or in combination with chemical fertilizer than in control. Protein and oil percentage were significantly higher in F3 (sheep manure) and F6 (50% cattle manure+50% chemical fertilizer), respectively. Compared to control, all fertilization methods generally increased nutrient concentration of sunflower. The highest N content was observed in F4 and F6 treatment. Combination of poultry manure and chemical fertilizer (F8) led to the highest P content and sheep manure application (F3) resulted to the highest K content than control.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 14
Claim · model-written summary
Water stress at flowering significantly decreased sunflower seed yield.
- Taxon
- Sunflower
Helianthus annuust0 - Treatment
- water stresse0
- Outcome
- seed yielde0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seed yield decreased significantly due to water stress when imposed at either of the growth stages.”
t0“Sunflower”
Claim · model-written summary
Water stress decreased seed oil content and unsaturated fatty acids, more at seed filling than flowering.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- water stresse0
- Outcome
- oil content and unsaturated fatty acids of oile0
- Direction
- decreasee0
- Qualifier
- water stress at seed filling stagee0
- Comparator
- water stress at flowering stagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“water stress caused a marked decrease in oil content and unsaturated fatty acids of oil, however this negative effect was greater in water stress at seed filling stage with respect to water stress at flowering stage.”
t0“Sunflower”
Claim · model-written summary
Water stress at flowering increased seed protein content.
- Taxon
- SunflowerHelianthus annuust0
- Treatment
- water stress at flowering stagee0
- Outcome
- protein contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“protein content increased due to water stress at flowering stage.”
t0“Sunflower”
Claim · model-written summary
Drought stress at seed filling significantly decreased seed nutrient content.
- Taxon
- SunflowerHelianthus annuust0
- Treatment
- drought stress at seed filling stagee0
- Outcome
- nutrient content of the seedse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“drought stress at seed filling stage significantly decreased nutrient content of the seeds”
t0“Sunflower”
Claim · model-written summary
Drought stress at flowering increased nutrient uptake.
- Taxon
- SunflowerHelianthus annuust0
- Treatment
- drought stress at flowering stagee0
- Outcome
- nutrient uptakee0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“drought stress at flowering stage caused to increase of nutrient uptake.”
t0“Sunflower”
Claim · model-written summary
Manure alone increased seed yield over control.
- Taxon
- SunflowerHelianthus annuust0
- Treatment
- manure alonee0
- Outcome
- seed yielde0
- Direction
- higheste0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The seed yield was highest in case of application of manure alone or in combination with chemical fertilizer than in control.”
t0“Sunflower”
Claim · model-written summary
Manure combined with chemical fertilizer increased seed yield over control.
- Taxon
- SunflowerHelianthus annuust0
- Treatment
- manure alone or in combination with chemical fertilizere0
- Outcome
- seed yielde0
- Direction
- higheste0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The seed yield was highest in case of application of manure alone or in combination with chemical fertilizer than in control.”
t0“Sunflower”
Claim · model-written summary
Sheep manure gave a significantly higher seed protein percentage.
- Taxon
- SunflowerHelianthus annuust0
- Treatment
- sheep manuree0
- Outcome
- Proteine0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Protein and oil percentage were significantly higher in F3 (sheep manure) and F6 (50% cattle manure+50% chemical fertilizer), respectively.”
t0“Sunflower”
Claim · model-written summary
Half cattle manure plus half chemical fertilizer gave a significantly higher oil percentage.
- Taxon
- SunflowerHelianthus annuust0
- Treatment
- 50% cattle manure+50% chemical fertilizere0
- Outcome
- oil percentagee0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Protein and oil percentage were significantly higher in F3 (sheep manure) and F6 (50% cattle manure+50% chemical fertilizer), respectively.”
t0“Sunflower”
Claim · model-written summary
Fertilization generally increased sunflower nutrient concentration over control.
- Taxon
- sunflowerHelianthus annuuse0
- Treatment
- all fertilization methodse0
- Outcome
- nutrient concentratione0
- Direction
- increasede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared to control, all fertilization methods generally increased nutrient concentration of sunflower.”
Claim · model-written summary
Poultry manure produced the highest N content.
- Taxon
- SunflowerHelianthus annuust0
- Treatment
- F4e0
- Outcome
- N contente0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest N content was observed in F4 and F6 treatment.”
t0“Sunflower”
Claim · model-written summary
Half cattle manure plus half chemical fertilizer produced the highest N content.
- Taxon
- SunflowerHelianthus annuust0
- Treatment
- F6e0
- Outcome
- N contente0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest N content was observed in F4 and F6 treatment.”
t0“Sunflower”
Claim · model-written summary
Poultry manure with chemical fertilizer produced the highest P content.
- Taxon
- SunflowerHelianthus annuust0
- Treatment
- Combination of poultry manure and chemical fertilizere0
- Outcome
- P contente0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Combination of poultry manure and chemical fertilizer (F8) led to the highest P content”
t0“Sunflower”
Claim · model-written summary
Sheep manure produced the highest K content over control.
- Taxon
- SunflowerHelianthus annuust0
- Treatment
- sheep manure applicatione0
- Outcome
- K contente0
- Direction
- higheste0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sheep manure application (F3) resulted to the highest K content than control.”
t0“Sunflower”
The same questions in other papers
drought · quality: oil · Helianthus annuus (common sunflower)Results differ
23 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
22 papers more in this group
See all 26 papers →fertilization · quality: oil · Helianthus annuus (common sunflower)Results differ
75 papers in the same direction as this paper · 13 in the opposite direction
- positive
- no effect
- negative
85 papers more in this group
See all 89 papers →drought · nutrient: content · Helianthus annuus (common sunflower)Positive and negative results
5 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
4 papers more in this group
See all 8 papers →fertilization · nutrient: content · Helianthus annuus (common sunflower)Positive and negative results
63 papers in the same direction as this paper · 7 in the opposite direction
- negative
- no effect
- no effect
67 papers more in this group
See all 71 papers →drought · yield · Helianthus annuus (common sunflower)Positive and negative results
61 papers in the same direction as this paper · 13 in the opposite direction
- negative
- positive
- positive
71 papers more in this group
See all 75 papers →fertilization · yield · Helianthus annuus (common sunflower)Positive and negative results
343 papers in the same direction as this paper · 18 in the opposite direction · 3 reporting no difference from an alternative
- positive
- positive
- positive
361 papers more in this group
See all 365 papers →fertilization · quality: protein · Helianthus annuus (common sunflower)Results agree
24 papers in the same direction as this paper
- positive
- positive
- positive
21 papers more in this group
See all 25 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.