Implement 400 kg of mixture/ha in 2 doses, as soon as in April/May well and another in September/Oct in the 5th yr till the tree is ready for tapping. The literature on nutrient diagnostics or nutrient equilibrium methods for taking care of fertilization in immature rubber plantations is too scarce https://artwork05826.blogdun.com/33189037/examine-this-report-on-palm