Effect of rate of arbuscular mycorrhizal inoculum for cabbage seedling production

Abstract

The experiments were conducted in the seedbed of Soil Science Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur, Bangladesh to find out the effect of rate of arbuscular mycorrhiza (AM) inoculum in producing cabbage seedlings during winter season of 2007-08 and 2008-09. Seven rates of AM inoculum viz., 0, 0.5, 1.0, 1.5, 2.0, 2.5, 3.0 kg/m were used for cabbage seedling production. Cowdung at the rate of 5 kg/m were used as the basal. Cabbage seeds were sown in 10 cm apart solid lines on 13 November 2007 and 11 November 2008, and the seedlings were thinned out to about 3 cm from seedling to seedling within a week of germination. Cultivar Atlas-70 was used as the variety of cabbage. Biomass yield, seedling height and nutrient uptake by cabbage seedlings increased greatly with the use of AM inoculum. Biomass yield of cabbage seedlings were followed quadratic trend with the increase of AM inoculum rate from 0 to 1.5 kg/m in 2007-08 and 2.0 kg/m in 2008-09.