Pengaruh Ketinggian Tempat terhadap Karakteristik Buah dan Biji Kopi Arabika (Coffea arabica L.) di Kecamatan Siborong-borong Kabupaten Tapanuli Utara

Abstract

Coffee is one of the leading commodities in the plantation sector in Indonesia. The third highest coffee production is in North Sumatra Province, with the highest distribution found in North Tapanuli Regency. Siborong-borong district is located at an altitude of 1100-1500 meters above sea level. The altitude of the place has a great influence on the size of the Arabica coffee fruits and beans. This study aims to determine the effect of altitude on Arabica coffee fruit and beans in Siborong-borong district based on altitude. This research was conducted from July 2024 to December 2024. On each land, 10 samples of Arabica coffee fruit were taken with purposive sampling technique, then the fruit samples were measured using a caliper and analytical scales. The measurement results were analyzed with a simple linear regression equation using SPSS v.27 software. The results of the study indicates that there was a significant effect of altitude on the parameters of fruit diameter, fruit length, bean diameter, bean length and dry bean weight. While there was no significant effect of altitude on the parameters of fruit skin thickness, fruit pulp thickness, bean mesocarp thickness, and bean endocarp thickness.