Distribution of Azolla in Palakkad eastern plains (AEU 23)
Keywords:
Azolla, Composition, Distribution, Soil propertiesAbstract
A study was conducted in the Department of Soil Science and Agricultural Chemistry, College of Horticulture, Vellanikkara during the period 2013 to 2015 to study distribution of Azolla in Palakkad eastern plains. The electrochemical properties of soil were studied in the nine locations coming under two blocks viz., Chittoor and Kollengode of AEU23, as described by Kerala State Planning Board. General composition of Azolla was analyzed to get information on parameters like moisture, dry matter, carbon, nitrogen, C/N ratio, crude protein, phosphorus and potassium. Correlation was also worked out between the soil parameters and Azolla composition. Locational effect was significant on all the soil parameters studied. Significant positive correlation was noticed between the carbon content of Azolla and the electrochemical soil properties like pH and EC. The contents of nitrogen, crude protein and phosphorus of Azolla revealed a significant positive correlation with soil phosphorus status. But the C/N ratio exhibited a significant negative correlation with soil P. The potassium content in Azolla showed a significant positive correlation with the potassium content of soil.Downloads
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