The Role of Tree Crops On Nutrient Availability, And production of Coffee Agroforestry

Abstract

The Agroforestry systems require special treatment, especially in crop selection. Penaung can be a competitor for major crops such as coffee. So research needs to be conducted to examine the role of shade trees on nutrient availability and coffee crop production in the agroforestry system. The research location is community plantation land that implements an agroforestry system in Enrekang Regency. The land is determined by a Land Use System (SPL) based on the type of shade, namely SPL 1 (shade of legumes), SPL 2 (shade of plantation), and SPL 3 (shade of fruit trees). Coffee plants are mature plants between the ages of 15-17 years. The research parameters are soil nutrient content, namely C, N, C/N, P2O5, and K2O, and coffee plant production. ANOVA analyzed data. The results showed that between treatments did not significantly affect all parameters. Availability of C, N, and K2O contents with various types of shade is obtained by a low content, while the C/N, and P2O5 ratios are of moderate content. The highest C, and N values in shade of fruit trees. The highest C/N ratio value in shade of Leguminosae, and fruit plants. The highest P2O5 and K2O content in plantations shade. The average production of coffee plants with an agroforestry system is relatively low due to high rainfall. The highest amount of production is obtained in the shade of Leguminosae, this indicates that there is no nutrient competition in the shade of Leguminosae.