Abstract
Coffee is one commodity has high economics market that cultivated by farmer mainly in the high elevation area. The economics and ecological function of coffee plantations have to be worked in the area plantation, so formulation combination between coffee and forest tree is important. The research aimed to identify the tree species composition of a shade tree in a coffee plantation. Some plot sized 50 m x 50 m was distributed based on lands properties of farmers. Density, frequency, and tree spacing were measured to get basal area, relative density, relative frequency, and important value index. A more in-depth statistical analysis was performed using SPPS to determine the significance of the relationship between density and frequency with coffee productivity. The relationship between tree spacing planting, basal area, and shade trees’ density with Arabica coffee production is a strong enough relationship is the density variable. While the relationship between regular and disordered planting spacing variables with coffee production is strong. The relationship between basal area, density, and coffee production is very weak.
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