Factors affecting the production of arabica coffee of smallholder plantations in Dairi District

[摘要] The productivity of arabica coffee of community in Dairi District is still relatively low compared to other districts where in 2014 it was recorded at 12.13 qtl/ha/year, which was lower than the productivity of arabica coffee at Simalungun, Toba Samosir, and Madina Districts which were respectively of 15.46, 14.24, and 13.90 qtl/ha/year. This study aims to analyse the factors that affect the production of arabica coffee of smallholder plantations in Dairi District, North Sumatra Province. This study used primary data from interviews with arabica coffee farmers. Determination of sample is by Accidental Sampling method, while the sample size is determined by Slovin method where the number of respondents is 99 families. Data analysis was performed using the production function method of Cobb-Douglas. The results showed that simultaneously the number of plants, the age of plants, the number of labours, the amount of fertilizer, and the amount of pesticide have a significant effect; while partially the number of plants, the age of plants, and the amount of fertilizer have a significant positive effect, and the number of labours and the amount of pesticide have a positive but not significant effect on arabica coffee production of smallholder plantations in Dairi District.

[发布机构] Agribusiness Department, Faculty of Agriculture, Universitas Sumatera, Utara, Medan, Sumatera Utara, Indonesia^1

[效力级别] 生态环境科学

[关键词] Cobb-Douglas;Primary data;Production function;Sample sizes;Sampling method;Sumatra