Evaluating the Effect of Four Irrigation Water Levels on the Quantity and Quality of Soybean Crop Yield in Moara Domneasca of Romania

Abstract

In order to quantitatively and qualitatively evaluate soybean yield under conditions of reducing the amount of irrigation water, a field experiment was carried out according to the design of the randomized whole lots with four replicates and four treatments in Moara Dominica in Romania in 2015 included four irrigation levels and as follows the first treatment (T1) with a decrease of 40 % Of the water requirement and treatment (T2), a decrease of 20% of the water requirement. As for the treatment (T3), irrigation was carried out according to the water requirement and the fourth treatment (T4), irrigation was carried out using a 20% increase over the water requirement. The study included in addition to the grain yield, the measurement of the biological yield, the weight of dry stems, pods, protein, protein and oil yield and water efficiency. The highest and lowest quantities of cereals were recorded 1950 kg. h-1 and 1085 kg. h-1 in T4 and T1 respectively. Reducing the amount of irrigation water results in a decrease in the crop yield and the percentage of oil in the seeds. The rate of oil decrease in seeds was more severe compared to other indicators. The oil yield in transactions (T2) and (T1) decreased significantly compared to the control treatment (T3).

Water productivity indicators showed a clear effect of the amount of irrigation water on all indicators of this study. Depending on the efficient use of water we can conclude that T2 was the best treatment compared to other treatments.