Abstract
Research was carried out at Rimski Šančevi experiment field of Institute of Field and Vegetable Crops in Novi Sad in the period 1993-2004. The experiment included an irrigated and non-irrigated control treatment. Irrigation water use efficiency (Iwue) and evapotranspiration water use efficiency (ETwue) were determined in order to assess the effectiveness of irrigation on soybean yield. The average yield increases of soybean due to irrigation practice was 0.82 t ha-1, ranging from 2.465 t ha-1 in years with limited precipitation and higher than average seasonal temperatures (2000) to 0 t ha-1 in rainy years (1996, 1997, 1999). Evapotranspiration water use efficiency (ETwue) of soybean ranged from 0.11 kg m-3 to 1.36 kg m-3 with an average value of 0.66 kg m-3, while irrigation water use efficiency (Iwue) varied from 0.11 kg m-3 to 1.04 kg m-3 with an average value of 0.56 kg m-3. Effect of irrigation on yield of soybean and results of both ETwue and Iwue which were similar to those obtained from the literature indicate that irrigation schedule of soybean in the study period was properly adapted to plant water requirements and water-physical soil properties. Determined values of ETwue and Iwue could be used for the planning, design and operation of irrigation systems, as well as for improving the production technology of soybean in the region.
Highlights
Soybean [(Glycine max (L.) Merr.] is a dominant world crop for vegetable oil and protein for animal and human consumption
Irrigation water use efficiency (Iwue) and evapotranspiration water use efficiency (ETwue) were determined in order to assess the effectiveness of irrigation on soybean yield
Evapotranspiration water use efficiency (ETwue) of soybean ranged from 0.11 kg m-3 to 1.36 kg m-3 with an average value of 0.66 kg m-3, while irrigation water use efficiency (Iwue) varied from 0.11 kg m-3 to 1.04 kg m-3 with an average value of 0.56 kg m-3
Summary
Soybean [(Glycine max (L.) Merr.] is a dominant world crop for vegetable oil and protein for animal and human consumption. Interest in soybean production has increased because soybean has a wide range of adaptation in regard to different climatic, soil and growth conditions. In Vojvodina region, northern part of the Republic of Serbia in the period between 1993 and 2004 soybean was grown on 43,583-146,000 ha (Hrustić & Miladinović 2008). The average yield was 2.1 t ha-1 ranging from 1.2 t ha-1 to 2.8. Maksimović Institute of Field and Vegetable Crops, Maksima Gorkog 30, 21000 Novi Sad, Serbia
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