Effect of biofertilizers on the growth and yield of cinnamon (Cinnamomum zeylanicum Blume)

Experiments were undertaken to optimize the nutrient requirement for maximizing the bark yield in cinnamon. It was observed that the incorporation of vesicular arbuscular mucorrhiza (VAM) at 3 kg/tree had a synergistic effect and increased the plant height, girth and the number of branches. Bark yield was maximum in the treatment T₉ (250g N, 130g P and 250g K/tree/year and VAM 3kg/tree) during the first (1.615 kg/tree) and second harvests (2.050 kg/tree). The influence of VAM on the induction of higher bark yield in cinnamon is evident.