ESTD PERPUSTAKAAN UNTAD
ESTD PERPUSTAKAAN UNTAD
| JudulINVENTARISASI PENYAKIT DAUN BIBIT NYATOH (Palaquium Obtusifolium Burck) PADA BEBERAPA TINGKATAN UMUR DI PERSEMAIAN CV. ANDROKARYA |
| Nama: HERI UTAMI |
| Tahun: 2021 |
| Abstrak Nyatoh (Palaquium obtusifolium Burck) is a potential type of plant to develop because it has considerable economic and ecological value. But one of the lines in forest-plant cultivation is that of pests and disease. The study aims to identify the types of diseases, the symptoms of attacks, the frequency and intensity of attacks, and to identify disease-causing pathogens in nyatoh seed leaves. The study uses research procedures with data retrieval in the field and in the laboratory. For field data retrieval, the practice was to divide each tract of rice cakes into three blocks of the same size as the site for disease observation. Afterward calculate the frequency of attacks and the intensity of attacks, and note the symptoms of attack on leaves. While data retrieval in the laboratory is done by growing disease pathogens in PSA media that have been prepared in petri dishes and incubated for several days. Identifying attacked types of pathogens was done under a microscope and compared with existing literature. The result of the study indicates that Nyatohl leaf disease is the leaf disease with its type of disease is phytophthora sp., its corrosive leaf disease is the hemileia vastatrix and the leaf print disease caused by the cercosphora sp. The average frequency of attacks (FS) and the intensity of attacks (IS) from real seed leaf disease at 3 months of age is 46.78 % and 19.1 %. Whereas at 5 months age is 28.28% and 10.63 %. Then for the 8-month-old seedlings is 36.02 percent and 13.3. Real seedlings on the seedbed CV. Androkarya rated as light damaged criteria. Keywords: Nyatoh, disease, rust of leaves, blotches of leaves. |