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Effect of Sulphur Fertilization on the Yield and Quality of Sunflower Seed

Shamima Nasreen
Soil Science Division, BARI, Joydebpur, Gazipur-1701

Dr. S. M. lmamul Huq
Department of Soil Science, University of Dhaka, Bangladesh

Md. Ahsanulla H.
Oilseed Research Centre, BARI, Joydebpur, Gazipur-1701.

Abdul Latif
Oilseed Research Centre, BARI, Joydebpur, Gazipur-1701.

Krishna Chowdhury
Fats and Lipid Section, BCSIR, Dhaka, Bangladesh

Abstract/ Executive Summary:

Field experiment was conducted during the rabi season s of 1996-97 and 1997-98 on silty clay loam at Grey Terrace soil to study the effect of sulphur levels on seed yield. oil and protein contents, fatty acid composition and chemical properties of oil of sunflower (cv. Kironi ). Application of S in sunflower @ 80 kg/ha increased significantly the seed yield, oil and protein contents, iodine value, saponifi cation value, palmitic and linoleic acids of oil followed by 60 kg S/ha. Acid value, free fatty acids. un saponifiable matter, stearic and oleic acids decreased consistently with the increase in S levels in both the years. The results suggest that sulphur fertilization is beneficial in sunflower production in enhancing both quantity and quality.

Keywords: Sunflower, Sulphur, Seed yield, Oil and protein contents, Fatty acid, Composition and chemical properties.

Location: The Grey Terrace Soil of Mdhupur Tract (AEZ 28), Gazipur, Bangladesh

Start Date:

End Date:

Program Area: Crop-Soil-Water Management

Commodity: Sunflower, Fertilizer

Objectives:

To study the effect of sulphur fertilizer on seed yield, oil and protein contents, fatty acid composition and chemical properties of oil of sunflower.

Methodology:

The soil is silty clay loam and acidic in reaction (pH 6.0) with low contents of total nitrogen (0.035), available phosphorus (7.02 ppm) and available sulphur ( 10 ppm). The mean monthly maximum temperature was 34.9°C and the mean minimum was 10.5°C. The amount of rainfall received during the cropping period 122 mm and 54.8 mm in 1996-97 and 1997-98, respectively. Seven levels of sulphur fertilizer (0, 20, 40, 60, 80, l 00 and 120 kg/ha) were used as treatment variables. The experiment was set up in a RCB design with 4 replications. The unit plot size was 5 m x 3 m. The plot was fertilized with N 120 P90 K50 Zns B2 kg/ha as urea for N, triple super phosphate (TSP) for P205, muriate of ptash (MP) for K20, zinc oxide for Zn, soluber for B and gypsum for S. The whole amount of TSP, MP, gypsum, zinc oxide, soluber and half of urea were applied as basal dose. Seeds of sunflower (cv. Kironi) were sown in the first week of November during 1996 and 1997 with 2 kg seeds/ha maintaining 50 cm row to row and 25 cm plant to plant distance. The remaining urea was applied in two splits at 25 and 45 days after emergence (DAE). Three irrigations were made at 25 and 75 DAE. Weeding and mulching were done as per requirement. To calculate the protein percentage in whole seed, nitrogen percentage was multiplied by 6.25. Acid value, free fatty acid, iodine value, saponification value and unsaponifiable matter were determined following standard methods at Fats and Lipid Section of the Institute of Food Science and Technology, Bangladesh Council for Scientific and Industrial Research (BCSIR), Dhaka. Collected data were statistically analyzed.

Source of Information: Bangladesh J. Agril. Res. 25(4) : 663-670, December 2000

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

From the results of two years' study, it m ay be concluded that application of sulphur in sunflower @ 60 t o 80 kg/ha increased seed yield, oil and protein content, iodine value, saponification value, palmitic and linoleic acids of oil. Conversely, acid value, free fatty acid, no saponifi cation value, stearic and olec acids decreased with each increment in sulphur levels.

Knowledge Management: Journal