The effect of organic fertilizer and dolomite application toward cassava production in Lebak Regency-Banten

Assessment Institute for Agricultural Technology of Banten, Indonesia Ministry of Agriculture, Ciptayasa Avenue-Serang-Banten Km 01 42182, Indonesia

^* Corresponding author: siagian.vicky@yahoo.com

Abstract

Cassava (Manihot esculenta C.) is the third-largest crop after rice, and corn in Banten Province. The objectives of this study are: 1) Determine the effect of organic fertilizer application and liming on cassava production in Lebak Regency, 2) Study the difference of cassava farming on the demonstration plot with the cassava farming of farmers. The research method uses a completely randomized experimental design (CRD) on a 0.5 ha demonstration plot with 3 treatment plots each with 3 replications. Also with the survey method interviewing 11 cassava farmers as respondents. The data analysis using qualitative and quantitative analysis. Quantitative analysis used the ANOVA (Analysis of Variance) test and the qualitative test used descriptive tabulations. The results of this study were 1) F_count = 0.767 < Ftable> = 5,143, the conclusion that H₀ was received, means that all treatment did not significantly affect cassava productivity. 2) The average productivity of cassava on the demonstration plot was 42.13 tons of wet tubers/ha while at the farmer's level was 24.18 tons of wet tubers/ha with a B/C ratiowas 4.0. The varieties plantedwere Manggu Local Superior Varieties both on the demonstration plot and farmers.