Changes in soil pH, organic matter, phosphorus and potassium under successive planting cycles of rubber (Hevea brasiliensis) - Karthikakuttyamma M.; Aiyer R.S.; Krishnakumar A.K.; Satisha G.C.; Suresh P.R. (Placrosym XV, 2002, Mysore, India. (Eds. K.Sreedharan, P.K. Vinod Kumar, Jayarama and Basavaraja M. Chaluki). Central Coffee Research Institute, Karnataka, India, pp. 356-361., 2002)
Keywords: Soil phosphorus