TY  - BOOK
AU  - Karthikakuttyyamma M
AU  - Aiyer R S
AU  - George V
AU  - Prasannakumari P
AU  - Suresh P R
TI  - Effect of continuous cultivation of rubber (Hevea brasiliensis) on morphological features and organic carbon, total nitrogen, phosphorous and potassium contents of soil
PY  - 1998///
PB  - Indian Journal of Natural Rubber Research
KW  - Hevea brasiliensis
KW  - Morphological properties
KW  - Soil nutrient status
N2  - The effect of continuous cultivation of rubber on soil properties was investigated. Soil morphological properties, organic C and total N, P and K were estimated in the soil profiles samples in plantations in which rubber was grown for more than sixty years. Soil samples from adjoining natural forests were studied for comparison. The study revealed that while the morphological properties were not significantly affected, the total N and K status decreased and the P status increased under continuous rubber cultivation. The study points out that application of higher dose of N and K fertilizers and a reduction of the current rate of P fertilizer are necessary
ER  -