Analysis of effect of production factors on the production and income of coffee farmers using Beauveria bassiana in Siborongborong Subdistrict

Arabica coffee is a type of that widely grown in the highlands North Sumatra. Siborongborong District largest producing. However, productivity lower than potential sigararutang variety. This study aims to analyse effect fertilizer, Beauveria bassiana (Bb) and labour use on production compare income farmers who Bb intensively, non - intensively do not Bb. The method used are multiple linear regression means analysis (Independent Sample Test). results show simultaneously, Bb, have significant production. Partially, only fertilizer positive effect, meanwhile has no There difference between those differences non-intensive did higher