Effect of Trichoderma Seed Dressing on Rhizosphere Mycoflora of Brassica juncea

Rhizosphere mycoflora were isolated by serial dilution technique from two varieties of Brassica juncea (L.) czern.and coss.cv.Varuna (containing high amount of glucosinolate) and selection EH -3 (containing very low amount of glucosinolate) were selected for rhizosohere study.The seeds of Brassica juncea cv.EH -3 and Varuna were treated with Trichoderma -talk powder.At different stages of plant growth (Seedling, flowering and maturity) the rhizosphere mycoflora were isolated and recorded.The highest number of rhizosphere mycoflora was isolated during flowering stage.It was observed that the number of mycoflora was more in rhizosphere soil than non -rhizosphere soil.Aspergillus species was the most dominant species in the rhizosphere of Varuna and EH -3.Other common fungi isolated from the rhizosphere soil are Curvularia sp., Alternaria sp, Fusarium sp., etc.