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Abstract
In areas facing water shortage, increasing water productivity is the key to overcome the greatest challenge in the agricultural sector. The present field experiment aimed to evaluate the effect of different irrigation water depths and salinity of magnetized and non-magnetized water on grain yield, biomass, ...
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In areas facing water shortage, increasing water productivity is the key to overcome the greatest challenge in the agricultural sector. The present field experiment aimed to evaluate the effect of different irrigation water depths and salinity of magnetized and non-magnetized water on grain yield, biomass, height, protein, and oil content of soybean variety DPX. The experiment was performed as factorial based on randomized complete block design with three replications in Aliabad, Golestan province, in 2013. The treatments consisted of three levels of water volume (100%, 75% and 50% of soybean water requirement) and three salinity levels (0.7, 5, and 10 dS/m). The results showed that magnetized water caused irrigation water quality to be improved. Therefore, magnetization of irrigation water resulted in the highly significant increase in the grain yield, biomass, height, protein, and oil content of plant under water deficit and salinity stress treatments (p < 0.001). The average decrease of yield in water salinity of 5 dS/m was equal to 8.44 percent, and for water salinity of 10 dS/m was equal to 24.68 percent as compared to the control treatment. Furthermore, the average decrease of yield in 75% irrigation level was equal to 30.68 percent, and for 50% irrigation level was equal to 44.40 percent as compared to the control treatment. In general, the highest grain yield was 5.5 tons per hectare for plants treated with magnetized water and provision of 100% crop water requirement.