000			01877nam a2200301Ia 4500
008			220216s9999 xx 000 0 und d
100			_aKarthikakuttyamma M
245		0	_aDistribution of exchangeable and total manganese in rubber growing regions of India
260			_bIndian Journal of Natural Rubber Research _c1989
300			_a91-98
520			_aProfiles 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.
650			_aCorrelations
650			_aCorrelations
650			_aExchangeable manganese
650			_aExchangeable manganese
650			_aIndia
650			_aIndia
650			_aSoil mechanical composition
650			_aSoil mechanical composition
650			_aTotal manganese
650			_aTotal manganese
650			_aTraditional and non-traditional rubber growing regions
650			_aTraditional and non-traditional rubber growing regions
700			_aAugusthy A
700			_aKrishnakumar V
700			_aMathew M
942			_cAR
999			_c47068 _d47068