Response of Sunflower to Different N/P Fertilizer Ratios and  Levels of Nitrogen and Phosphorus

Ravishankar, G. A.; Malligawad, L. H.

doi:10.20546/ijcmas.2017.608.120

Cited by 3 publications

(2 citation statements)

References 1 publication

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“…Leaf chlorophyll content increased with the increased rate of N (Fig 3A ), which lead to accumulated more photosynthates and finally enhanced the DM accumulation (Qahar et al, 2010). Ravishankar and Malligawad (2017) showed that DM accumulation enhanced with the increased levels of N application irrespective of other nutrients. Head diameter increased with the increased rate of N due to adequate supply of N which stimulated higher head diameter (Ullah and Akmal, 2018) that accommodated more number of seeds head -1 .…”

Section: Dry Matter (Dm) and Yield Attributesmentioning

confidence: 95%

Effect of Nitrogen Rate and Application Ratio on Late Sown Sunflower in Wet Soil under Zero Tillage in the Coastal Zone of Southwestern Bangladesh

Sarker

Ali

Bell

et al. 2022

IJARe

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Background: The cropping pattern of southwestern (SW) coastal Bangladesh has been improving from Fallow-Fallow-Transplanted aman paddy to Sunflower-Fallow-Transplanted aman paddy. The emerging cropping pattern of SW Bangladesh from single transplanted aman paddy to double cropping, sunflower in winter after transplanted aman paddy needs new crop husbandry including nutrient management particularly nitrogen (N). Hence, the present study aimed to evaluate the yield response of late sown sunflower to rates and application ratio (basal:top dressed) of N in the coastal soil of SW Bangladesh. Methods: The field experiment was conducted during winter season (2018-19) in a randomized complete block design and replicated thrice. The experimental treatments consisted of seven N rates (0, 60, 90, 120, 150, 180 and 210 kg ha-1) and three application ratio (50%:50%, 25%:75% and 0%:100%). Result: Results revealed that with the increased of N rates, dry matter, seed yield, yield attributes and net income were substantially increased: the highest values of these parameters were found at 150 and 180 kg N ha-1 when applied @ ratio of 25%:75% (basal: top dressed) despite non-significant interaction while the agronomic efficiency was higher at 60 kg ha-1 next decreased. The findings of the study suggested that N @ 150 kg ha-1 with 25%:75% application ratio is suitable for late sown sunflower in the coastal soil of SW Bangladesh.

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Section: Dry Matter (Dm) and Yield Attributesmentioning

confidence: 95%

Effect of Nitrogen Rate and Application Ratio on Late Sown Sunflower in Wet Soil under Zero Tillage in the Coastal Zone of Southwestern Bangladesh

Sarker

Ali

Bell

et al. 2022

IJARe

View full text Add to dashboard Cite

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“…Oyinlola et al (2010), Biswas and Poddar (2015), and Sheoran et al (2016) reported the nitrogen doses up to 10 kg da -1 , required for satisfactory level yield in hybrid sunflower. Ravishankar and Malligawad (2017) reported this amount as 12.6 kg da -1 . According to the research results, higher dry matter amounts were recorded in relation to increased photosynthesis rate in sunflower plants grown in sufficient N conditions.…”

Section: Discussionmentioning

confidence: 99%

Responses of Linoleic and High Oleic Type Sunflower Varieties (Helianthus Annuus L.) to Nitrogen and Potassium Applications

Çelik

Ören

2019

Ege Üniversitesi Ziraat Fakültesi Dergisi

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Objective: The study was conducted to determine the effects of nitrogen (N) and potassium (K) on dry matter and some nutrient elements uptake of linoleic and high-oleic type sunflower varieties. Material and Methods: A greenhouse experiment was carried out in randomized factorial design with three replicates, 0, 16, 32, 48, and 64 mg kg-1 N and 0, 24, and 48 mg kg-1 K were applied. Results: Dry matter and nutrient uptake of sunflower varieties increased with nitrogen (p<0.01), however decreased with potassium. The highest amounts were obtained from 32 mg kg-1 N dose and ESGrafic CL variety. Conclusion: High-oleic type sunflower varieties have resulted in more fertilizer requirements. ÖZ Amaç: Çalışma, azot (N) ve potasyum (K) uygulamalarının linoleik ve yüksek oleik tip ayçiçeği çeşitlerinin kuru madde ve kimi besin elementi içeriklerine etkisini belirlemek amacıyla yürütülmüştür.

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Effects of nitrogen doses on growth and some nutrient element uptake of sunflower (Helianthus Annuus L.) hybrids

Ören¹,

Çelik²

2018

AST

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Abstract. Sunflower (Helianthus annuus L.) is known as one of the most important and preferred vegetable oil producing plants. In recent years, new cultivars with high oleic acid contents have been developed because of their health effects, extended frying and shelf life. On the other hand, nutrition of the plants is important for healthy growth, high yield, and oil quality and their nutrient needs may differ between the plant species and varieties. We aimed to determine the effects of increasing application doses of nitrogen (N) (0, 16, 32, 48, and 64 mg.kg-1 N) on growth and on some nutrient element uptake of four sunflower hybrids and compare the nutritional differences of linoleic (ESNovamis CL, and LG 5542 CL) and high-oleic (Oliva CL and ESGrafic CL) type sunflower hybrids in a greenhouse. The experiment was conducted in randomized factorial design with three replicates. Increasing doses of N effected the dry matter and nutrient uptake of sunflower hybrids significantly (p<0.01). Increasing doses of N elevated the dry weight, N, phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), sodium (Na), iron (Fe), zinc (Zn), copper (Cu), manganese (Mn) and boron (B) uptake of all tested sunflower hybrids. The increases were found maximum at 32 mg.kg-1 N dose. Significant differences were also established between the hybrids. Among the tested hybrids, ESGrafic CL a high oleic type sunflower has higher nutrient uptake capacity so much more nutrients might be supplied to this new generation sunflower hybrids according to the soil and plant analysis results.

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Response of Sunflower to Different N/P Fertilizer Ratios and Levels of Nitrogen and Phosphorus

Cited by 3 publications

References 1 publication

Effect of Nitrogen Rate and Application Ratio on Late Sown Sunflower in Wet Soil under Zero Tillage in the Coastal Zone of Southwestern Bangladesh

Effect of Nitrogen Rate and Application Ratio on Late Sown Sunflower in Wet Soil under Zero Tillage in the Coastal Zone of Southwestern Bangladesh

Responses of Linoleic and High Oleic Type Sunflower Varieties (Helianthus Annuus L.) to Nitrogen and Potassium Applications

Effects of nitrogen doses on growth and some nutrient element uptake of sunflower (Helianthus Annuus L.) hybrids

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