Judul: Pencegahan Rebah dan Busuk Kecambah (Colletotrichum gloeosporioides (Penz.) Sacc.) Pada Pepaya Calina Oleh Beberapa Agens Biokontrol
Abstrak: Calina (IPB-9) is one of the superior varieties of papaya that have been released by IPB. This variety is susceptible to the causal agent of anthracnose. Anthracnose caused by Colletotrichum gloeosporioides is an impotant disease of papaya that reduce the quality of papaya in the storage. However, this patogen also caused damping-off and seedling rot at nursery. Therefore, this study purposed to evaluate the effectiveness of five biocontrol agents (Trichoderma harzianum (TH17), Gliocladium fimbriatum (G84), Bacillus subtilis (B12) and Actinomycetes (APS5 and APS12)) to reduce damping-off or seedling rot caused by Colletotrichum gloeosporioides on Calina (IPB-9). This study using in vitro test by dual culture and baiting poisonous methods and in vivo test by pouring their suspension into polybag. The result of in vitro experiments showed that TH17 and G84 were most effective to suppressing the growth of C. gloeosporioides with resistance level reached 100% on α = 5%. In the in vivo experiments, using the suspension of B12 and G84 were most effective suppressing incidental disease of damping off with relative resistance level 66.67% on α = 5%.
Keyword: Seedling disease, biocontrol agent, antraknosa, seedbed papaya calina

Judul: Keefektifan Agens Antagonis dalam Pengendalian Rebah Kecambah Cabai Merah
Abstrak: One of the major problems during cultivating of chilli is antrachnose disease. The cause of chili anthracnose can various as Colletotrichum acutatum, C. gloeosporoides, and Gloeosporium piperatum. Pathogens can cause seed decay, damping off, and anthracnose fruit rot. The objective of experiment is to evaluate the effectiveness of several antagonist agents in controlling damping off disease. The identification results show that the cause of anthracnose which can be isolated from the seeds and chilies are Gloeosporium piperatum. Antagonist agent Trichoderma harzianum (TH1), Gliocladium fimbriatum (G84), Bacillus subtilis (B12), and Pseudomonas fluorescens (P1) can inhibited the growth of pathogen colonies in vitro as 100%, 100%, 95.43%, and 39.83%. In the in vivo test is known that isolates TH1, G84, B12, and P1 is very effective (100%) in the controlling of chili damping off. Both of single treatment or combination treatment antagonist agents were not different significantly to control the damping off disease. The fourth of antagonist agents are very potential in controlling the damping off disease of red pepper germination
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Judul: Karakteristik Barisan Eksak Pendek HomR(N, ) dan HomR( ,N)
Abstrak: Module merupakan generaIisasi dari ruang ve}ctor, dimana pada ruang vektor skalar-skalamya berasal dati suatu lapangan (field) sedangkan pada module skaJar-skalamya merupalam unsur-unsur dan suatu ring R dengan unsur satuan. Dari suatu grup komutatif yang unsur-unsumya dipadukan dengan unsur-unsur dart suatu ring R, maka akan mengbastlk.an yang namanya R-module. Himpunan seroua fungsi homomorfisma yang memetakan dati R-module M ke R-module N dinotasikan sebagai HomiM,N), dimana HomiM,N) juga merupakan suatu R-module.
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