Effect of mycorrhiza inoculation and manure application on the growth and economic yield of garlic (Allium sativum L.) in a low input system

In order to investigate the effects of mycorrhizal inoculation and application of manure on the growth and economic yield of garlic, a factorial experiment was conducted in a randomized complete block design with three replications in Biran-Shahr region of Lorestan province in 2018- 2019. Experimental treatments included inoculation of cormlet with mycorrhiza bio-fertilizer in two levels (non-inoculation and inoculation) and application of rotten manure (sheep) in six levels (control (0), 15, 20, 25, 30 and 35 t/ha). The results showed that combined use of mycorrhiza and manure caused a significant increase in the economic yield of the garlic plant. Also, mycorrhiza had a significant effect on economic yield, weight and diameter of garlic and number of cormlet, but has no significant effect on garlic height. Manure treatment had a significant effect on economic yield, weight and diameter of garlic, but no significant effect was observed on the number of cormlet and plant height. The use of mycorrhizal fungi with a yield of 12497 kg/ha, increased the yield of garlic by 55% compared to the control. Combined application of bio-fertilizer of mycorrhiza and sheep's manure by increasing the absorption of the elements in the soil and improving the growth and development of plant photosynthetic organs, increased the yield of garlic. The findings showed that inoculation of mycorrhiza and application of manure in soil, improves the conditions of growth and economic yield of garlic, which can be recommended for sustainable production as well as increasing the economic yield of this plant than the conventional method of planting.