National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692 Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Investigations were carried out in the farm soils of PAJANCOA & RI, Karaikal in order to quantify the distribution of Phosphorus (P) in different pools using different statistical analysis. For this purpose, the surface soil samples of PAJANCOA & RI farm, numbering 115, were collected from individual fields. The soil samples were also analyzed through correlation analysis, linear multiple regression analysis and path analysis in order to quantify the interrelationship between the P fractions and extractants of P. While correlating the P extracted by different extractants with that of the P fractions, it was noticed that the Olsen-P was positively related to HCl-P and Triacid-P, whereas the Bray-P was more closely related to the NaCl-P fraction. It was estimated by multiple regression analysis that 33.2 per cent of the Olsen-P, 33.2 per cent of the Bray I-P and 35.9 per cent of the Bray II-P could be significantly predicted by the different P fractions. Attempts made to isolate the direct and indirect effects of the different P fractions on the P extracted by different reagents had shown that there was a moderate to low level of contribution by HCl-P and NaCl-P respectively towards the Olsen-P and a high level of negative contribution by NaOH-P. While the Bray I-P had a positive, direct and high level of contribution by the NaCl-P, the Bray II-P had a high level of direct and positive contribution from the NaCl-P.
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