Pertumbuhan Bibit Kopi (coffea a rabica l.) yang Inokulasi FMA dan Aplikasi Fosfat Alam Ayamaru

Abstract

The research was cunducted at Unipa’s Screen House that aim to study on effectiveness of arbuscular mycorrhizal fungi (AMF) inoculation to increase of coffee seedling P uptake that Ayamaru Phosphate Rock (APR) application. The study was carried out for 16 weeks after planting under 60 % of shading net. The treatment of APR consisted of 0, 2, 4, 6, 8 g P2O5/plant and 2 g P2O5 SP-18 as a comparison treatment. Acid soil which was collected from Tanah Merah-Manokwari was used as planting media, while the coffee seeds were obtained from the Coffee and Cacao Research Center, Jember-East Java. AMF inoculum Mycofer was collected from Biotechnology Laboratory PAU IPB Bogor and Indigenous AMF was collected from coffee rhizosphere at Manokwari. AMP inoculation and APR application were done at planting. All fertilization treatments which were inoculated with AMF produced better seedling growth results compared to the seedling growth without AMF. Mycofer inoculum more effective than indigenous AMF and control on all APR dosages. The coffee seedling wich were inoculated Mycofer was positively correlate to increase the dosage leves of APR i.e r >0.45, FMA indigenous r > 0.65 and without FMA r >0.46 respectively. Compared with indigenous AMF, Mycofer inoculation were improve dry shoot weight was 35.44%, P content 77.32%, and P uptake 44.14%, while compared with control was 112.21%, 167.76%, and 146.47% respectively. Inoculum Mycofer consisted of specieses i.e Gigaspora margarita (INVAM-105), Glomus etunicatum (NPI-126), Acaulospora tuberculata (INDO-2), Glomus manihotis (INDO-1) on the other hand AMF indigenous from Manokwari consisted of A. tuberculata Janos & Trappe, A. scrobiculata Trappe, dan G. aggregatum Schenck & Smith.