Occurrence, characterization of native rhizobia and nodulation pattern, soil nutrient status grown in groundnut of tsunami affected coastal area of cuddalore district of tamil nadu

N. Pandeeswari and S. Kalaiarasu

The bacteria of the soil usually called Rhizobium have a considerable importance in agriculture because of their capacity to fix the atmospheric nitrogen in symbiosis with the plants of the family of legumes. The present research work, we have collected soil samples from thirty location of Tsunami affected soil of Cuddalore district. Total thirty soil samples were enumerate the total rhizobial population. The maximum population was recorded in periyapattu (8.70 X 103 / g-1 of soil) followed by other locations respectively. The root nodules were collected from 30 different locations of Cuddalore district. All the nodules were isolated of Bradyrhizoium on YEMA medium. Further these isolates were tested biochemical characters based on their morphological and biochemical test. All the thirty locations, the nodulation pattern was observed in Periyapattu followed by other location respectively. Further the physic-chemical properties of soil samples were analysed. Further these isolated rhizobial stains were screened their salt tolerant efficiency in different salt concentration level.

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