Physico-chemical analyses of raw and biologically treated sugar mill
effluent

Abstract :

Mycorrhizal Helper Bacterium (MHB) and Plant Growth Promoting Rhizomicroorganisms (PGPR) have emerged as an important component of integrated plant nutrient supply system and hold a promise for reducing the input cost, improve the crop yield and quality, nutrient supply and sustaining the productivity over a long period. Arbuscular Mycorrhizal (AM) fungal colonization in the roots and scale-like leaves of ‘vasambu’ (Acorus calamus) was positive in all the study localities, although the species of AM fungi colonizing the roots and scale like leaves of rhizome of different plants varied. The presence of high degree of AM colonization with various AM fungal structures such as infection pegs, pelotons, hyphal dimorphic structures, intracellular arbuscules, inter and intracellular vesicles in the root cortical cells were observed. Totally, 32 AM species were isolated from the rhizosphere soils of A. calamus. Of the 32 AM fungal species recorded, only two species (Glomus fasiculatum and Gigaspora margarita) were able to colonize in the roots of the plants.