RESPONSES OF GRAIN AND STRAW YIELDS OF WINTER WHEAT (Cv. Tajan) TO LIMITED IRRIGATION IN SEMI-ARID ENVIRONMENT

Öz This study was conducted to investigate responses of winter wheat (cv. Tajan) production to limited irrigation under semi-arid environment. Four treatments comprising irrigation at growth stages of stem elongation (I1), I1+ flowering (I2), I2 + soft dought (I3) and I3 + hard dough (I4). All plots were uniformly irrigated after sowing. Results revealed the applying treatments of I3 and I4 produced similar 1000-grain weight (TGW), harvest index(HI), grain (GY), biological (BY) and straw (SY) yields. The TGW ranged from 35.3 to 41.2 g, HI ranged from 0.45 to 0.51. The grain yield were from 5366 to 6313 kg ha-1, and straw yield were from 5800 to 7058 kg ha-1. Biological yield is evidently affected by grain and straw yields and ranged from11170 to 13370 kg ha-1. The findings showed that To obtain optimum production for wheat cv. Tajan in Moghan and similar climate condition, it is recommended to irrigate this crop with four events (I3). In this study several models were worked out to predict grain, straw and biological yields as a function of applied water in a semi-arid environment.

Anahtar Kelimeler:

Winter wheat, Wheat yield, Limited irrigation, Irrigation management

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Abdmishani, S., Jafari Shabestari, J.1986. Effect of different irrigation regimes and seeding rate on yield of winter wheat. Iranian Journal of Agricultural Science, 17(4):45

Aggarwal, P. K., Singh, A. K., Chaturvedi, G. S., Sinha, S. K.19 Performance of wheat and triticale cultivars in a variable soil-water environment. Field Crops Res., 13:301- 315. Doorenbos , J., Kassam, A. H. 1979. Yield response to water, Irrigation and Drainage Paper 33. Food and Aricultural Organization of the United Nations. Rome, Italy

Doorenbos, J., Pruitt, W. O. 1977. Crop water requirements, Irrigation and Drainage Paper 24. Food and Aricultural Organization of the United Nations.Rome, Italy

Ehling, C. F., Le Mert, R. D.1976. Water use and productivity of wheat under five irrigation treatments. Soil Sci. Soc. Am. J., 40:750-755 .

English, M., Nakamura, B. 1989. Effects of deficit irrigation and irrigation frequency on wheat yields. J. Irrig. Drain. Eng., 115:172-184.

Fallahi, H.A., Nasseri A., Siadat, A. 2008. Wheat yield components are positively influenced by nitrogen application under moisture deficit environments. Int. J. Agri. Biol., 10:673-6.

FAO.FAOSTAT.Agriculture.Rome,2008.Available in http://faostat. fao.org/ faostat/collections? subset=agriculture. Accessed at: December 2008

Fischer, R. A. 1970. The effects of water stress at various stages of development on yield processes in wheat.

Proc. symp. plant responses to climatic factors. Uppsala, Sweden. 15-20 Sept Hexem, R. W., Heady, E. O. 1978. Water production function for irrigated agriculture. Center for

Agricultural and Rural Development. Iowa State University Press, Ames, IA Hoffman, G. L. , Howell T. A., Solomon, K. H.1992.

Management of farm irrigation systems, Ameriacan Society of Agricultural Engineers, 2950 Niels Road. St Joseph, MI 49085-9659.

Hanks, R. J., 1974. Model for predicting plant yield as influenced by water use. Agron. J., 66: 660-665.

Hanks, R.J., Sorensen, R.B. 1984.Harvest index as influenced in spring wheat by water stress.p.205-209. in

W. Day and R.K. Atkins (ed.) Wheat growth and modeling. NATO ASI series A: Life Science Vol. 86. Plenum Press, New York Lal, R. B. 1985. Irrigation requirement of dwarf durum and aestivum wheat varieties. Indian J. Agron., 30: 207-213.

Mahmood , N., Akhtar B. Saleem, M. 2002. Scheduling irrigation in wheat grown at different seed rates. Asian

Journal of Plant Sciences, 1(2): 136-139. Moghaddam, M. 1999. Advnced engineering statistics.

Faculty of Agriculture, Tabriz University (in Farsi). Iran Musick, J. T., Porter, K.B. 1990. Wheat. In: Irrigation of

Agricultural Crops , Editted by Stewart and Nielsen. 19 pp :1217. American Society of Agronomy, Crop

Science Society of America and Soil Science Society of America Musick, J. T., Dusek D. A., Mathers, A. C. 1984. Irrigation water management of wheat. ASAE paper 84-2094.

Am. Soc. Agric. Eng., St. Joseph, MI. Nasseri, A. 1999. Analysis and optimization of water usecrop yield relation in Moghan plain, 9th Seminar of Iranian National Committee on Irrigation and Drianage: Allocation and Optimum Utilization

Management of Water in Agriculture. Tehran. Iran. 271-2 Nasseri, A., Fallahi, H. A. 2007.Water use efficiency of winter wheat under deficit iIrrigation. Journal of

Biological Sciences, 7(1):19-26. Nasseri, A. 2009. Precipitation variation in agricultural plain of Moghan, North-West Iran. J. Agric. Soc. Sci.,00:00000000

Oweis, T. 1997. Supplemental irrigation: a highly water – efficient practice. Pp:16, ICARDA. Aleppo. Syria

Passioura, J. B. 1977. Grain yield, harvest index and water use of wheat. J. Aust. Inst. Agric. Sci.,43:117-120

Rao, Y. G., Bhardwaj, R. B. L. 1981. Consumptive use of water, growth and yield of aestivum and durum wheat varieties at varying levels of nitrogen under limited and adequate irrigation situations. Indian J. Agron. 26:243-250. 22

Robinson, B., Freebarin, D. 2005. Water use efficiency of wheat. Available in www.apsru.gov.au

Shawcroft, R. W. 1983. Limited irrigation may drop yield, up profit. Colo. Rancher Farmer, 37(4): 35-38.

Zhang, J., Sui, X., Li, B., Su, B., Li J., Zhou, D. 1998. An improved water- use efficiency for winter wheat grown under reduced irrigation. Field Crops Res., 59: 91A. Nasseri 23