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Physico-Chemical Analyses and Status of Arbuscular Mycorrhizal Fungi from Rhizosphere Soils of Solanaceous Vegetables

V. Sawant,U. Bhale

Published 2016 in Unknown venue

ABSTRACT

Soil characters were studied for the ability of the soil to support Arbuscular Mycorrhizal Fungal (AMF) colonization and spore density. Results of three rhizosphere soil samples of Tomato, Chilli and Brinjal from six different study sites in the region showed variation in soil colour, pH, EC, Organic carbon, Nitrogen, Phosphorus, Potassium, Calcium, Magnesium, Sodium, Zinc, Ferrous, Manganese, Copper and Boron. Root colonization and spore density was correlated with all soil parameters studied except soil colour. In Tomato, correlation between colonization was positive with pH, Electrical Conductivity (EC), Organic carbon, N, P, K, Mg, Fe, Mn, Cu and Br whereas negative with soil Ca, Na and Zn. Spore population showed positive correlation with soil Organic carbon, N, K, Fe and B; and negatively with pH, EC, P, Ca, Mg, Na, Zn, Mn, and Cu. In Chilli root colonization showed positive correlation with all studied parameters except pH, EC, P and Br. Spore population revealed negative correlation with pH, N, Cu and Br and remaining parameters were positively correlated. Root colonization in Brinjal showed negative correlation with only pH and Mg whereas spore availability had negative relation with only pH, K and Mg. AMF inoculum may be in the form of spores or hyphae are the access point of symbiosis between AMF and crop plants. The results of number of spores per 100g of rhizosphere soil studied showed variation according to plant species. In the region highest inoculum density was in brinjal rhizosphere and lowest in chilli rhizosphere. Pearson’s correlation analysis showed that spore density was positively correlated with root length colonization in Tomato (r = 0.581), Chilli (r = 0.432) and Brinjal (r = 0.205) but when it was correlated with root colonization there was variation in correlation as Chilli (r = 0.799) and Brinjal (r = 0.900) emerge with strong positive correlation and Tomato (r = 0.092) with negative correlation.

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    2016

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