Abstract
A field experiment was conducted on medium black clayey soils under rainfed conditions at Mam Research Station University of Agricultural Sciences (UAS) Dharwad India during kharif 1999 to study the effect of different levels and ratios of nitrogen and phosphorus on seed yield and nutrient uptake of the sunflower hybrid DSH 1 The experiment consisted of nine treatments ie N/P ratios with two N/P ratios of < 1 0 (0 67 and 0 80) N/P ratio of 10 consisting of two ratios and four N/P ratios of > 1 0 (1 20 1 30 1 60 and 2 00) along with control (no nitrogen and phosphorus) as keeping potassium level (60 kg K2O ha l) as constant The results showed that nitrogen and phosphorus applied in N/P ratios of > 1 0 with 2 00 1 25 1 00 fertilizer level and N/P ratio of 1 0 with 2 00 2 00 1 00 fertilizer level produced 21 and 27 percent higher seed yield over the UAS Dharwad fertilizer recommendation i e N/P ratio of < 1 0 with 1 00 1 25 1 00 fertilizer level (2800 kg ha !) At maturity higher nitrogen (177 72 kg and 186 27 kg N ha l) phosphorus (23 66 kg and 27 75 kg P2O5 ha ') and potassium (124 85 kg and 126 68 kg K2O ha :) uptakes were obtained in the treatment receiving N/P ratio of > 1 0 with 200 125 1 00 (120 kg N 75 P2O5 and 60 kg K2O ha') and in the treatment receiving N/P ratio of 1 0 with 2 00 200 100(120kgN 120 P2O5 and 60 kg K2O ha l) fertilizer levels as compared with the UAS Dharwad fertilizer recommendation i e N/P ratio of < 1 0 with 1 00 1 25 1 00 (60 kg N 75 P2O5 and 60 kg K2O ha ').
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Claims 5
Claim · model-written summary
The N/P ratio above 1.0 treatment yielded 21 percent more sunflower seed than the UAS recommendation.
- Taxon
- sunflower
Helianthus annuuse1 - Treatment
- N/P ratios of > 1 0 with 2 00 1 25 1 00 fertilizer levele0
- Outcome
- seed yielde0
- Direction
- highere0
- Value
- 21 and 27 percente0
- Comparator
- UAS Dharwad fertilizer recommendatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nitrogen and phosphorus applied in N/P ratios of > 1 0 with 2 00 1 25 1 00 fertilizer level and N/P ratio of 1 0 with 2 00 2 00 1 00 fertilizer level produced 21 and 27 percent higher seed yield over the UAS Dharwad fertilizer recommendation”
e1“sunflower hybrid DSH 1”
Claim · model-written summary
The N/P ratio of 1.0 treatment yielded 27 percent more sunflower seed than the UAS recommendation.
- Taxon
- sunflowerHelianthus annuuse1
- Treatment
- N/P ratio of 1 0 with 2 00 2 00 1 00 fertilizer levele0
- Outcome
- seed yielde0
- Direction
- highere0
- Value
- 27 percente0
- Comparator
- UAS Dharwad fertilizer recommendatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N/P ratio of 1 0 with 2 00 2 00 1 00 fertilizer level produced 21 and 27 percent higher seed yield over the UAS Dharwad fertilizer recommendation”
e1“sunflower hybrid DSH 1”
Claim · model-written summary
The two treatments had higher nitrogen uptake at maturity.
- Taxon
- sunflowerHelianthus annuuse1
- Treatment
- N/P ratio of > 1 0 with 200 125 1 00e0
- Outcome
- nitrogene0
- Direction
- highere0
- Value
- 177 72 kg and 186 27 kg N ha le0
- Comparator
- UAS Dharwad fertilizer recommendatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At maturity higher nitrogen (177 72 kg and 186 27 kg N ha l) phosphorus (23 66 kg and 27 75 kg P2O5 ha ') and potassium (124 85 kg and 126 68 kg K2O ha :) uptakes were obtained in the treatment receiving N/P ratio of > 1 0 with 200 125 1 00 (120 kg N 75 P2O5 and 60 kg K2O ha') and in the treatment receiving N/P ratio of 1 0 with 2 00 200 100(120kgN 120 P2O5 and 60 kg K2O ha l) fertilizer levels as compared with the UAS Dharwad fertilizer recommendation”
e1“sunflower hybrid DSH 1”
Claim · model-written summary
The two treatments had higher phosphorus uptake at maturity.
- Taxon
- sunflowerHelianthus annuuse1
- Treatment
- N/P ratio of > 1 0 with 200 125 1 00e0
- Outcome
- phosphoruse0
- Direction
- highere0
- Value
- 23 66 kg and 27 75 kg P2O5 ha 'e0
- Comparator
- UAS Dharwad fertilizer recommendatione2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At maturity higher nitrogen (177 72 kg and 186 27 kg N ha l) phosphorus (23 66 kg and 27 75 kg P2O5 ha ') and potassium (124 85 kg and 126 68 kg K2O ha :) uptakes were obtained in the treatment receiving N/P ratio of > 1 0 with 200 125 1 00”
e1“sunflower hybrid DSH 1”
e2“as compared with the UAS Dharwad fertilizer recommendation”
Claim · model-written summary
The two treatments had higher potassium uptake at maturity.
- Taxon
- sunflowerHelianthus annuuse1
- Treatment
- N/P ratio of > 1 0 with 200 125 1 00e0
- Outcome
- potassiume0
- Direction
- highere0
- Value
- 124 85 kg and 126 68 kg K2O ha :e0
- Comparator
- UAS Dharwad fertilizer recommendatione2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At maturity higher nitrogen (177 72 kg and 186 27 kg N ha l) phosphorus (23 66 kg and 27 75 kg P2O5 ha ') and potassium (124 85 kg and 126 68 kg K2O ha :) uptakes were obtained in the treatment receiving N/P ratio of > 1 0 with 200 125 1 00”
e1“sunflower hybrid DSH 1”
e2“as compared with the UAS Dharwad fertilizer recommendation”
The same questions in other papers
nitrogen · nutrient: content · Helianthus annuus (common sunflower)Positive and negative results
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- no effect
- negative
- positive
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See all 22 papers →nitrogen · yield · Helianthus annuus (common sunflower)Positive and negative results
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- positive
- positive
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See all 196 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
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See all 365 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.