THE EFFECT OF SALINITY STRESS AND IRRIGATION REGIMES ON YIELD AND WATER PRODUCTIVITY IN CRACKED PADDY RICE FIELD

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SADRADINI ALI ASHRAF; SALAHSHOUR DALIVAND FATEMEH

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Journal: Cereal Research Year:2012 | Volume:2 | Issue:3 Page(s): 193-208

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Title

THE EFFECT OF SALINITY STRESS AND IRRIGATION REGIMES ON YIELD AND WATER PRODUCTIVITY IN CRACKED PADDY RICE FIELD

Author(s)

SADRADINI ALI ASHRAF | SALAHSHOUR DALIVAND FATEMEH | Issue Writer Certificate

Keywords

CRACKQ2

DROUGHT STRESSQ3

INFILTRATIONQ2

LATERAL FLOWQ2

RICEQ2

SALINITY STRESSQ2

Abstract

The most common irrigation method for Iran's paddy RICE fields is continuous flooding that it changes to intermittent irrigation in water shortage. On the other hand, several droughts and also construction and operation of different dams in Sepidroud River watershed cause to decrease the water quality of this river in the recent years. In this study the combined effects of salinity and DROUGHT STRESSes were investigated on horizontal and vertical water flow in CRACKed soil of a Hashemi cultivar paddy field (most common cultivar in Guilan Province). Treatments were consist of two irrigation strategies, namely continuous and intermittent (6 days intervals) flooding methods by applying 5cm water height and three SALINITY STRESS by using irrigation water at three electric conductivity levels of 2, 3 and 4 dsm-1. These treatments applied in two conditions consist of CRACK width 3 mm and 2 cm. The results indicate that when CRACKs by average width of 2 cm form in paddy field, daily irrigation of the crop even with inferior quality water can cause to higher yield than intermittent irrigation. In spite of less irrigation water for 6 days interval treatments, continuous irrigation treatments with 3 mm width CRACKs had the highest water productivity. Also, CRACKs by average width of 2 cm, increase LATERAL FLOW significantly. The effect of irrigation water salinity on LATERAL FLOW rate was not significant and CRACKs became irreversible even after rewetting.

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APA: Copy

SADRADINI, ALI ASHRAF, & SALAHSHOUR DALIVAND, FATEMEH. (2012). THE EFFECT OF SALINITY STRESS AND IRRIGATION REGIMES ON YIELD AND WATER PRODUCTIVITY IN CRACKED PADDY RICE FIELD. CEREAL RESEARCH, 2(3), 193-208. SID. https://sid.ir/paper/246626/en

Vancouver: Copy

SADRADINI ALI ASHRAF, SALAHSHOUR DALIVAND FATEMEH. THE EFFECT OF SALINITY STRESS AND IRRIGATION REGIMES ON YIELD AND WATER PRODUCTIVITY IN CRACKED PADDY RICE FIELD. CEREAL RESEARCH[Internet]. 2012;2(3):193-208. Available from: https://sid.ir/paper/246626/en

IEEE: Copy

ALI ASHRAF SADRADINI, and FATEMEH SALAHSHOUR DALIVAND, “THE EFFECT OF SALINITY STRESS AND IRRIGATION REGIMES ON YIELD AND WATER PRODUCTIVITY IN CRACKED PADDY RICE FIELD,” CEREAL RESEARCH, vol. 2, no. 3, pp. 193–208, 2012, [Online]. Available: https://sid.ir/paper/246626/en

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