Pengaruh Kandungan Unsur Hara Mikro (B, Cu, Zn, Mo) Tanah Terhadap Produksi Tanaman Kopi Arabika Pada Beberapa Kecamatan Di Kabupaten Tapanuli Utara

Abstract

This research will be conducted in Tarutung, Pagaran, Parmonangan, Siatas Barita and Sipahutar sub-districts from May 2023 to January 2024. This study used an analytical descriptive method by taking random soil samples. So did production data with the same method from 5 samples of coffee trees. Micronutrient data were classified as very low, low, medium, high and very high then regressed against 100 dry bean weights and productivity through multiple linear regression using IBM SPSS v.20. The results showed that Mo nutrients had a real effect on the weight of 100 dry beans but nutrients B, Cu and Zn had no real effect on the weight of 100 dry beans and Arabica coffee p roductivity. Regression analysis shows that micronutrient characteristics on 100 dry seed weight and productivity have a negative effect or can reduce 100 dry seed weight and productivity of Arabica coffee.