TY  - BOOK
AU  - Sudhakumari B.
AU  - Joseph M.[a]
AU  - Karthikakuttyamma M.
AU  - Mathew M.
TI  - Evaluation of two extractants for the estimation of available potassium, calcium and magnesium in acid soils under rubber
PY  - 1994///
PB  - Indian Journal of Natural Rubber Research
KW  - Available nutrient
KW  - Exchangeable ion
ER  -