Conference Abstract Book

WP 2 – Impact of CPH removal on soil HUSK BEAN FERTILISER SHADE TREES COCOA TREES LITTER/ PRUNINGS What impact does husk return to soil have on: • Plant availability of N and P • Annual macronutrient budgets Field trial (15 months) at the Cocoa Research Station of MARS Inc, Tarengee, Sulawesi – realistic local on-farm conditions (nearby trees) • Biomass production • CPH weight • Leaves and woody parts • Falling leaf litter • C, N, P, K, Ca, Mg analysis • Partial balance of external inputs of off- takes calculated using elemental concentrations and dry matter yields 10