Response of yield and some physiological traits of sweet basil affected by different nitrogen sources under intercropping with corn

In order to study response of yield and some physiological traits of sweet basil under nitrogen fertilizers (biological, chemical and integrated) in additive intercropping a field experiment was carried out in the Experimental Farm Faculty of Agriculture, Lorestan University during 2014-2015 growing seasons. The treatments were arranged in a factorial split-plot-in time experiment based on Randomized Complete Blocks Design with three replications. Experimental treatments were 100% chemical fertilizer (N), bio-fertilizer (nitroxin), integration of bio-fertilizer + 50% chemical fertilizer and control, different intercropping systems consisted of sole cropping sweet basil and the additive intercropping of corn + 25% sweet basil, corn + 50% sweet basil, corn + 75% sweet basil and corn + 100% sweet basil and three harvest. The results belong to sweet basil showed that integration of bio-fertilizer + 50% chemical fertilizer had the highest fresh yield (7579.25 kg ha-1), dyr yield (1303.83 kg ha-1), plant height (50.62 cm), chlorophyll a (0.51 mg g-1 FW), chlorophyll b (0.36 mg g-1 FW) and total chlorophyll (0.87 mg g-1 FW). However, integration of bio-fertilizer + 50% chemical fertilizer in terms of mentioned traits except for plant height had no significant difference with 100% chemical fertilizer treatment. Among different intercropping systems, sole cropping pattern in terms of all traits evaluated in this study had the highest amounts. The highest LER (1.566) belonged to corn + 100% sweet basil with bio-fertilizer.