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Efektivitas Bakteri Endofit Asal Lahan Basah untuk Menekan Penyakit Hawar Daun Bakteri (Xanthomonas oryzae) pada Padi Beras Merah (Oryza nivara L.) Rismawati Rismawati; Ismed Setya Budi; Mariana .
JURNAL PROTEKSI TANAMAN TROPIKA Vol 7 No 1 (2024): 7(1): Februari 2024
Publisher : www.ulm.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jptt.v7i1.2401

Abstract

Brown rice is a type of rice that has many benefits for the health of the body. The main diseases that attack many rice plants and cause a decrease in production include bacterial leaf blight (HDB) caused by the bacterium Xanthomonas oryzae. One alternative to control HDB is to use antagonistic agents, namely endophytic bacteria. This study aims to examine the ability of endophytic bacterial isolates from wetlands and the effect of application time in suppressing the intensity of bacterial leaf blight and to determine its effect on the growth of brown rice plants. There were 2 isolates of endophytic bacteria tested in this study, namely isolates of root origin (AKL) and isolates of stem origin (BLR) isolated from karamunting plants. This study used a completely randomized design (CRD) consisting of 5 treatments and 4 replications. The treatment used in this study was only the pathogen Xanthomonas Oryzae (control), soaking seeds with endophytic bacteria from roots, soaking seeds with endophytic bacteria from stems, soaking seeds + application when transplanting with endophytic bacteria from roots and seed soaking + application when transplanting Plant with stem-origin endophytic bacteria. Treatment of endophytic bacteria on brown rice seeds and application during transplanting was able to reduce the intensity of bacterial leaf blight (X. oryzae) with a disease intensity of 83% and an effectiveness of 15.6%. Treatment of endophytic bacteria on rice seeds did not inhibit seed germination and was able to increase the number of tillers, but had not been able to affect the increase in plant height.
Evaluasi Ketahanan Varietas Cabai Rawit Terhadap Penyakit Antraknosa (Colletotrichum Gloesporioides) Asal Isolat Dari Cabe Hiyung Amalia Fauziah; Mariana .; Ismed Setya Budi
JURNAL PROTEKSI TANAMAN TROPIKA Vol 7 No 1 (2024): 7(1): Februari 2024
Publisher : www.ulm.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jptt.v7i1.2402

Abstract

The category of resistance level of several cayenne pepper varieties planted in swamps to anthracnose disease (Colletotrichum gloesporioides) originating from isolates from hiyung chilies is important to know as basic information for determining control strategies. This research aims to determine the level of resistance of several varieties of cayenne pepper planted in swamp land to anthracnose isolates from Hiyung chilies. This research used RAL (Completely Randomized Design) with 10 treatments and 3 replications and 2 plants were used in each replication so that the total number of plants was 60 plants. The varieties used are the Bara, Hiyung, Dewata 43 F1, Tiung Tanjung, Tiung Ulin, Genie, Sekar, Alip, Sret and CR-9 varieties. Inoculation of the fungus Colletotrichum gloesporioides was carried out at the time of fruiting, with variables observed, namely the incubation period and disease incidence. The results of the research show the resistance of chili plants to anthracnose disease in the susceptible category, namely the Hiyung variety with a disease incidence percentage of 42.08%. The moderate category is the Bara, Dewata 43 F1, Tiung Tanjung, Genie, Sekar, and CR-9 varieties with disease incidence percentages of 30.11%, 28.94%, 35.93%, 20.87%, 21, respectively. 52% and 28.20%. The resistant category is the Tiung Ulin, Alip and Sret varieties with disease incidence percentages of 18.37%, 19.36% and 17.11% respectively. The incubation period for several cayenne pepper varieties that have been tested varies with an average of between 3.5-5.3 days.