Impact of Mycorrhiza fungi isolated from weed plants on growth of pepper plant seedling (Piper nigrum L.) and incidince of stem rot desease (Phytophthora capsici) in net house treatment

This study aims to determine the effect of mycorrhiza fungi porpagules on growth of the pepper plant seedling and incidences of plant rot disease. Study was conducted in net house located in Sindang Kasih of village, District of Ranomeeto Barat, Regency of South Konawe, Province of Southeast Sulawesi and Laboratory of the Faculty of Forestry and Environmental Science Halu Oleo University Kendari, Indonesia. This research is compiled using a randomized design completelly (RDC) with two treatments combination: fungi mycorrhiza (FM) with four levels and Phytophthora capsici (Pc) with three levels. The variables observed for results were plant height, number of leaves, number of tendrils, dry plant weight, incidences of disease and percentage of mycorrhiza fungi infection on plant roots. Results of study revealed that mycorrhiza fungi inoculation 10 g polybag-1 and P.capsici inoculum 15 g polybag-1 (A2B1) can promote the growth of plant height, number of leaves, number of trindles in 70 DAT and dry plants weight. Mycorrhiza fungi inoculation 20 g polybag-1 and P.capsici inoculum 10 g polybag-1 (A3B2) cause disease incidences is lowest at 5th week is 24.30%. Mycorrhiza fungi inoculation 10 g polybag-1 and P.capsici inoculum 10 g polybag-1 (A1B1), mycorrhiza fungi 15 g polybag-1 and P.capsici inoculum 20 g polybag-1 (A2B2) constitute the highest percentage of mycorrhiza fungi infection in pepper plant roots respectively 80.00%.