Effect of sowing dates on phenological development, yield and oil content of sunflower (Helianthus alznuus) in a Medi terranean type environment
DOI:
https://doi.org/10.59797/ija.v47i3.3183Keywords:
Sowing date, Sunflower, MediterraneanAbstract
The effect of sowing time on phenological development, seed yield and oil content of sunflower (Helianthus annuus L.) was studied under the restricted irrigation conditions in Hatay, Turkey (36 39 N, 36 40 E) in 1998 and 1999. Sunflower cultivars ( C 207 and Istranca ) were sown at 2 week intervals from 1 March to 15 July, with 2 supplemental irrigations. Delaying in sowing shortened the period for emergence, head initiation, and total duration. Seed yield increased until 1 April and then decreased greatly with further delay in sowing both cultivars. The higher oil contents were also recorded with earlier sown sunflower crop.References
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Rawson, H.M., Dunstone, R.L., Long, M.J. and Begg, J.E. 1984. Canopy development, light .-interception and seed production in sunflower as influenced by temperature and radiation. Australian Journal of Plant Physiology 11: 255-265.
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Garside, A.L. 1984. -Sowing time effects on the developmeilt, yield and oil characteristics of irrigated sunflower (Helianthus anrzuus) in semi-arid tropical Australia. Australian Jour- nal of Experimental Agriculture and Anirnal
Husbandry 24 : 1 140-1 19.
Gimeno, V., Fernandez-Martinez, J.M. and Fereres, E. 1989. Winter planting as a means of drought escape in sunflower. Field Crops Research 22 :307-3 16.
Killi, F. and Gencer, 0. 1992. The effects of sow- ing dates on agronomical and technological properties, and the correlations among the& properties of some sunflower varieties grown under Cukurova condtions. Turkish Journal of Agriculture and Forestry 16 :721-729.
Rawson, H.M., Dunstone, R.L., Long, M.J. and Begg, J.E. 1984. Canopy development, light .-interception and seed production in sunflower as influenced by temperature and radiation. Australian Journal of Plant Physiology 11: 255-265.
Reddy, G.S., Maruthi, V., Vanaja, M. and Rao,
D.G. 1998. Effects of moisture stress and management practices on productivity of rainfed sunflower (Helianthus curnuus). Indian Journal of Agronomy 43 (1) :149-153.
