Refay Yahya A. 1994. Environmental effect on Some local. Graim Sorghum (Sorghum bicolor) Cuitivars production grown in central region of Saudi Arabia. J. King Saud Univ. Vol. 6, gric. Sci. (2): 281-288.(Abstract)
Ghandorah, Mohammed O., and Yahya A. Refay. 1994. Effects of Sowing date and cultivars on sugar beet (Beta Vulgaris L.) Production in the central region of Saudi Arabia. Arab Gulf J. Scient. Res., 12 (3): 465 – 478. ( Abstract)
El- Shawaf, I. I. S. Z. A. Sliman, Yahya A. Refay, and Abd. R. R. S. I. Alhabeeb. 1995. Genotype – Environment. Interaction in soybean: I. Effect on vegetative and reproductive duration. Egypt. J. Appl. Sci., 10 (5): 705-718. ( Abstract)
Refay, Y. A., Z. T.Soliman, M. O. Ghandorah, and I. I. EL-Shawaf. 1995. Evaluation of some Imported graim sorgham entries (sorghum bicolor) Under the environmental condition of Central region, Riyadh, Saudi Arabia, Egypt. J. Appl. Sci., 10 (5): 705-718. (Abstract)
Moustafa, Kh. A., and Yahya A. Refay. 1998. Effect of Planting dates and seeding rates on some barley genotypes grown under the condition of central region of Saudi Arabia. Arab Gulf J. Scient. Res., 16 (3): 643-656. ( Abstract)
AL- Suhaibani, Nasser A., and Yahya A. Refay. 2000. Effect of hill spacing on growth and Productivity of some sugar beet cultivatars. Alexandria Journal of Agricultural Research; Vol 45, (3): 87-105. ( Abstract)
Refay, Y. A., A. 2001. Study of the effects of planting dates and plant density on two fababean strains under the conditions of central region of Saudi Arabia. Arab Univer. J. Agric. Sci., ( Abstract)
– Saadalla, M. M. and Y. A. Refay. 2000. Genotypic Response, Correlations, and path coefficients in Grain sorghum as affected By contrasting water regimes. Bull. Fac. Agric., Cairo Univ., 52 (2000): 1-18. ( Abstract)
Sliman, Z. Y., Y. A. Refay, and Kh. A. Moustafa. 1994. Effects of Cycocel Rate and Time of Application on Performance of Two bread wheat cultiars. Agricultural Research Center- College of Agricultural, King Saud University, Bulletin No. 44: pp (5-19). ( Abstract)
AL-Kherb,S.Y .Refay, Y. A. and EL-Hussieni, S.2001.Resistance and susceptibility of sorghum cultivars to charcoal rot caused by macrophomina phaseolina ..Alex.sci. Exch.Vol.22 No.3,pp.183-191. (Abstract)
ALderfasi, A. A. and Y. A. Refay. 2002. Evaluation of three techniques for characterizing wheat plant water status . JKAU: Met., Env. & Arid Land Agric. Sci., vol.13, pp.43-52. ( Abstract)
Refay, Y., and R. Voigt. 1987. The relative influences of moisture and nitrogen on grain sorghum development for grain yeild and forage production under mono –crop and double – crop growth. Journal of The Arizona – Nevada Academy of Science, 22: 31.
Refay, Y., And R. Voigt. 1986. The relative influences of moisture and nitrogen fertilizer on sorghum development for grain and forage production under double cropping. Forage and Grain A college of Agriculture Report, University of Arizona, Tucson, Series P-67, PP: 135-137.
|Refay, Y., and R. Voigt. 1986. The relative influences of moisture and nitrogen fertilizer on sorghum development for grain and forage production under full season growth grain and Forage, A college of Agriculture, Report University of Arizona, Tucson, Series’ P-67, PP: 138-140.|