Effect of irrigation and nitrogen rates on yield and water productivity of sugar beet
2010
Pejic, B., Faculty of Agriculture, Novi Sad (Serbia) | Maksimovic, L., Institute of Field and Vegetable Crops, Novi Sad (Serbia) | Milic, S., Institute of Field and Vegetable Crops, Novi Sad (Serbia) | Rajic, M., Institute of Field and Vegetable Crops, Novi Sad (Serbia)
Based on the analysis of sugar beet yield achieved under conditions of irrigation and with different doses of nitrogen fertilizer, it can be concluded that the irrigation did not significantly affect yield performance, although the root yield in irrigation was higher than that in dry farming by 9.4% or 8.01 t/ha. As there were no statistically significant differences in sugar beet root yield either among the variants with high nitrogen doses or among the values of I/WUE, ETm/WUE and ETa/WUE, a conclusion was drawn that the variant of nitrogen fertilization with 120 kg/ha is adequate for both irrigation and rainfed conditions. The higher values of ETa/WUE in relation to ETm/WUE indicated that sugar beet water use was more productive under rainfed conditions than under irrigation conditions. The low values of I/WUE observed in some years and the higher values of ETa/WUE than ETm/WUE in the study period indicated that irrigation in the Vojvodina Province is supplementary in character.
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