Univrsity of Tehran Press Iranian Journal of Field Crop Science 2008-4811 49 4 2019 02 20 Effect of intercropping on water use efficiency, yield quantity and quality of millet and soybean in irrigation regimes Effect of intercropping on water use efficiency, yield quantity and quality of millet and soybean in irrigation regimes 97 113 70462 10.22059/ijfcs.2017.230808.654302 FA Goudarz Ahmadvand 0000-0003-4904-6694 Somayeh Hajinia PhD Student Crop Physiology, Faculty of Agriculture, University of Bu Ali Sina, Iran 0000-0002-4971-6734 Journal Article 2017 04 08 To investigate the effects of intercropping on yield quantity and quality of soybean (Glycine max (L.) Merr.) and millet (Panicum miliaceum L.) in irrigation regimes, the experiment was carried out as a split-plot based on a randomized complete block design with three replications at the Research Station of Agricultural Faculty of Bu-Ali Sina University, 2015. The main factor included three levels of irrigation regimes (irrigation after 60, 90 and 120 mm cumulative evaporation from pan class A) and five levels of replacement intercropping consisted of monoculture of soybean, monoculture of millet, 67 % soybean+ 33 % millet (67Soybean:33Millet), 50 % soybean+ 50 % millet (50Soybean:50Millet) and 33 % soybean+ 67 % millet (33Soybean:67Millet) as subplot. The results showed that the highest grain phosphorus concentration of millet (0.35 percent) was obtained from (50Soybean:50Millet) ratio in irrigation regimes after 60 mm evaporation, and the lowest one (0.12 percent) was observed in monoculture of millet in irrigation regimes after 120 mm evaporation. The highest grain phosphorus concentration (0.27 percent) of soybean was observed in (50Soybean:50Millet) ratio, that was 14.4 percent, higher than monoculture of soybean. Grain phosphorus and oil content reduced in irrigation regimes after 120 mm evaporation were about 40.7 and 34.8 percent, respectively, compared to irrigation regimes after 60 mm evaporation. Intercropping increased protein content of millet. Intercropping increased the water use efficiency of soybean and millet. Maximum value of LER (1.14) was achieved in (50Soybean:50Millet) intercropping in irrigation regimes after 120 mm evaporation. To investigate the effects of intercropping on yield quantity and quality of soybean (Glycine max (L.) Merr.) and millet (Panicum miliaceum L.) in irrigation regimes, the experiment was carried out as a split-plot based on a randomized complete block design with three replications at the Research Station of Agricultural Faculty of Bu-Ali Sina University, 2015. The main factor included three levels of irrigation regimes (irrigation after 60, 90 and 120 mm cumulative evaporation from pan class A) and five levels of replacement intercropping consisted of monoculture of soybean, monoculture of millet, 67 % soybean+ 33 % millet (67Soybean:33Millet), 50 % soybean+ 50 % millet (50Soybean:50Millet) and 33 % soybean+ 67 % millet (33Soybean:67Millet) as subplot. The results showed that the highest grain phosphorus concentration of millet (0.35 percent) was obtained from (50Soybean:50Millet) ratio in irrigation regimes after 60 mm evaporation, and the lowest one (0.12 percent) was observed in monoculture of millet in irrigation regimes after 120 mm evaporation. The highest grain phosphorus concentration (0.27 percent) of soybean was observed in (50Soybean:50Millet) ratio, that was 14.4 percent, higher than monoculture of soybean. Grain phosphorus and oil content reduced in irrigation regimes after 120 mm evaporation were about 40.7 and 34.8 percent, respectively, compared to irrigation regimes after 60 mm evaporation. Intercropping increased protein content of millet. Intercropping increased the water use efficiency of soybean and millet. Maximum value of LER (1.14) was achieved in (50Soybean:50Millet) intercropping in irrigation regimes after 120 mm evaporation. https://ijfcs.ut.ac.ir/article_70462_b14eef12b79c50b06ffe1af832812b42.pdf