Abstract: Efforts to improve soil fertility can be done through application of ameliorant such as coconut
shell charcoal. This study aimed to study the effect of coconut shell charcoal on the growth and
the yield of upland rice. This experiment was carried out at the farmers ‘field in PasirTalang
Village, Sumedang Regency, West Java Indonesia. This experiment used a Randomized Block
Design (RBD) consisting of six treatments and four replications. The treatments applied doses of
coconut shell charcoal (0, 1, 2, 3, 4 and 5 t ha-1). The results show that the application of
coconut shell charcoal affected significantly on plant height at 10th day after planting (DAP) and
20th DAP. The application of coconut shell charcoal into soil increased root-shoot ratio, number
of tillers and the yield of upland rice. The dose of 4 t ha-1of coconut shell charcoal showed the
highest increase in the yield of upland rice |