Influence of Edaphic Factors on VAMF Spore Population and Root Colonization in Acacia nilotica in Rajasthan.
2000
Kaushal, S. (Jai Narain Vyas University, Jodhpur (India). Dept. of Botany).
The rhizospher soil and root samples of Acacia nilotica were periodically collected from six localities of arid and semi-arid regions of Rajasthan during 1996-97. Vesicular arbuscular mycorrhiza fungal spore population as well as root colonizaiton were influenced by abiotic factors like soil moisture, soil pH, soil organic carbon content, soil phosphorus and soil nitrogen. The spore population was negatively correlated with soil moisture, organic carbon and soil phosphorus but positively correlated with soil pH. However, there was no correlation in spore population and percentage of root colonization with regard to changes in soil nitrogen. Seasonal variations in the spore population were also observed. Maximum spores occurred in the rhizosphere soil during the months of July and August and minimum during summer I.e. May and June.
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