At 4 years, trial RS CC 07 shows exceptional growth and early production in the coconut hybrids, which proves that with low Sufetula pest presence and when other production factors are mastered, peat is a perfectly suitable medium for coconut palms. At 2½ years, trial RS ES 74 shows a depressive effect for the layer of chopped husk around the root bulb and a positive effect for the layer of cocopeat + fibres. All these observations and trials point to the conclusion that perfectly bare soil needs to be achieved to significantly reduce Sufetula pest pressure when rehabilitating mature coconut plantings: remove not only ferns, but also dry fronds, husks and different coconut waste in the windrow, by burning in small controlled fires. This technique, combined with insecticide applications on the soil and the application of cocopeat, will be studied in a new trial RS CC 09. We also advise returning husk ash to the soil around the foot of coconut palms to recycle the K and CI nutrients. A trial, RS CC 10, examining the effect of substitute fertilizers (husk ash and dried aquatic plants) is to be set up at the end of the year. It is essential to apply mineral fertilization in 2002, after more than two years without fertilizers, concentrating on the two most sensitive nutrients: K and Cl. If the budgetary constraints are too strong, then the compound fertilizer schedule for KCI and NaCl can be rebalanced with more NaCl and less KCI at a constant chorine fertilizer rate.