Interaction between Microbial Flora and Acarine Fauna of Jatropha Plantation in Tripura

Seasonal population dynamics of acarine fauna and fungal flora was studied on soil of Jatropha plantation during February 2018 to January 2019. Study indicated highest acarine fauna (7.650.11nos. /m2x1002) during September, 2018 and lowest was recorded (1.00.2nos. /m2x1002) during March, 2018. On the other hand, peak fungal population was recorded in September (13.50.72 fungal colony/gm. soil in 10-3 dilution) and the less nos. was recorded during February (4.60.12 Fungal colony/ gm. soil in 10-3 dilution). Also out of 11 different genera, 13 species of acarine fauna, Archegozetes sp. was found to be more dominant (17.55 %) followed by Lamellobates sp. (13.76 %). Whereas, out of 10 genera of fungal flora, the dominant species was Trichoderma harzianum (21.87 %) followed by Cladosporium cladosporidae (11.46 %). Multiple regression analysis revealed significant influence by all the abiotic factors (F=15.96: pless than0.001). But acarine fauna showed positively correlated with the fungal flora (r=0.809; pless than0.001).