TY  - BOOK
AU  - Karthikakuttyamma M
AU  - Augusthy A
AU  - Krishnakumar V
AU  - Mathew M
TI  - Distribution of exchangeable and total manganese in rubber growing regions of India
PY  - 1989///
PB  - Indian Journal of Natural Rubber Research
KW  - Correlations
KW  - Exchangeable manganese
KW  - India
KW  - Soil mechanical composition
KW  - Total manganese
KW  - Traditional and non-traditional rubber growing regions
N2  - Profiles weere exposed in the conventional rubber growing areas in Kanyakumari, Kottayam, Trichur and Calicut and in the non-conventional region in Dapchari, Maharashtra. Soil samples were collected horizon-wise from these profiles and analysed for mechanical composition, organic carbon, pH, total iron, total manganese and exchangeable managanese. Correlations were worked out between the two forms of managanese and physico-chemical properties of the soil.  It was observed that the total as well as the available managanese are high in Dapchari compared to other regions studied.  The total manganese was found to be significantly correlated with the exchangeable managanese, fine sand, silt and total iron. The high content of managanese (1373 ppm) in the soil of Dapchari may not cause any adverse effect on growth of rubber, as rubber is found to be growing satisfactorily in soils having similar manganese staus in other rubber growing countries
ER  -