Impacts of different irrigation systems and nitrogen fertilizer on yield and water use efficiency of sugar beet

Document Type : Scientific - Research

Authors

1 Instructor of Agriculture and Natural Resources Research Center of Hamedan, Iran

2 Research Stoff of Agriculture and Natural Resources Research Center of Hamedan, Iran

3 Research Stoff of Agriculture and Natural Resources Research Center of Hamedan, Iran.

Abstract

This research was carried out to evaluate the effects of irrigation methods and N fertilizer rates on the quantity and quality of sugar beet in Ekbatan research station during 2001 and 2002. Experiment was performed in split-plot with 3 replications and 15 treatments. Treatments included 3 irrigation systems: sprinkler (solid set)، furrow (hydroflum) and drip (tape: 508-20-500) in main plots and 5 N fertilizer rates: 0(control) ، 60، 120، 180، 240 N kgha-1 in sub plots. The combined analysis of the data showed that differences among N rates were significant (P≤0.01) for root, sugar and white sugar yield. The effects of irrigation systems on root (P≤0.01) and  white sugar yield (P≤0.05)  were significant: N fertilizer rates significantly affected IWUE (P≤0.01), but interaction between irrigation systems and N fertilizer rates were not significant on IWUE. IWUE was decreased in drip (tape)، sprinkler and furrow respectively. Water consumption decreased averagely 45.8% and 36.8% in drip irrigation as compare to furrow and sprinkler irrigation respectively. Water consumption in sprinkler irrigation was 22.2% less than that in furrow irrigation.

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