Pengaruh Inokulasi Cendawan Mikoriza Arbuskular (CMA) terhadap Pertumbuhan dan Perkembangan Bibit Kopi Robusta (Coffea canephora)

Abstract

Coffee is a plantation product that plays an important role in the Indonesian economy. Indonesia produces 793,000 tonnes of coffee per year, making it one of the world's largest producers. According to the Director General of Plantations (2021), 99.33% of Indonesia's coffee production comes from community plantations, so coffee production is largely determined by the cultivation system of small farmers. The use of quality seeds is one method that determines the success of coffee cultivation. Improvement of soil biological properties is one of the supporting factors in the growth of quality coffee plant seeds. Efforts that can be made to help improve soil biological properties are inoculation of Arbuscular Mycorrhizal Fungi. This study aims to determine the effect of Arbuscular Mycorrhizal Fungi (Glomus sp) on the growth of Robusta coffee seedlings, and to obtain the best dose of Arbuscular Mycorrhizal Fungi to support the growth of Robusta coffee seedlings. This study used a completely randomized design with 6 treatments and 3 replications. The treatment in this study was the dose of AMF, which included P0 = without AMF inoculation; P1 = 5 g AMF/seed; P2 = 10 g AMF/seed; P3 = 15 g AMF/seed; P4 = 20 g AMF/seed; and P5 = 25 g AMF/seedling. The data were analyzed using the F test at a significant level of 5% and if the test results were significantly different, then proceed with the Duncan Multiple Range Test (DMRT) at a significant level of 5%. The results showed that the inoculation of Glomus sp. had an effect on the growth of Robusta coffee seedlings on the parameters of seedling height, stem diameter, root length, shoot dry weight and root dry weight. AMF inoculation at doses of 20 and 25 g/seedling gave the best effect on all parameters of the growth observations of Robusta coffee seedlings.