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Purnomowati Purnomowati
Fakultas Biologi, Universitas Jenderal Soedirman
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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PENYAKIT PADA TANAMAN BAWANG MERAH (Allium ascalonicum L.) YANG DISEBABKAN OLEH CENDAWAN DI PERTANAMAN RAKYAT DAERAH BREBES Eka Widiyarti; Purnomowati Purnomowati; Eddy Tri Sucianto
Scripta Biologica Vol 1, No 3 (2014)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.sb.2014.1.3.552

Abstract

Shallot (Allium ascalonicum L.) is one of the horticultural commodities which highly developed and cultivated in Brebes. Brebes contributed to fulfill up to 23% to the national needs. But, its production decreased 0.87% annually. The intensification of shallot production faced many problems, especially the diseases caused by the pathogenic fungi causing the low crop production. We conducted this study during the period of May–October 2012. The purpose of this study was to find out the type of pathogenic fungi and to determine the diseases including the dominant disease on shallot crops in Brebes. The research was a survey, and a diagonally purposive sampling technique applied at five different locations. We identified the plant diseases based on identification key books of the Penyakit-Penyakit Tanaman Hortikultura and the Plant Disease Handbook as references.  We described the diseases according to the signs and symptoms followed by the isolation of pathogenic fungi that cause disease. The pathogenic fungi identification was completed using the Illustrated Genera of Imperfect Fungi,  the Compedium of Soil Fungi, and the Pengenalan Kapang Tropik Umum as references. This study found three diseases in shallot crops, i.e., Fusarium tuber rot, Aspergillus tuber rot and Curvularia leaf spot. The dominant shallot crop disease was the Curvularia leaf spot.
PENGARUH INOKULASI MIKORIZA VESIKULA ARBUSKULA (MVA) CAMPURAN TERHADAP KEMUNCULAN PENYAKIT LAYU FUSARIUM PADA TANAMAN TOMAT (Solanum lycopersicum) Uswatun Hasanah; Purnomowati Purnomowati; Uki Dwiputranto
Scripta Biologica Vol 4, No 1 (2017)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (746.748 KB) | DOI: 10.20884/1.sb.2017.4.1.382

Abstract

Tomato has an important role to fullfil the nutrition of society. The most important problem in the cultivation of tomatoes is fusarium wilt caused by Fusarium oxysporum it will attacking the plants from nursery to adult. One of the alternative control is use the Vesicles Arbuscular Mycorrhizae (VAM). The success of VAM infection in plants is determined by the dose and the inoculation. The aim of this research is to determine the effect of dose and mixture VAM inoculation to against the emergence of fusarium wilt in tomato plants and to determine the dosage mixture VAM inoculation as the most effective way for controlling fusarium wilt in tomato plants. The method of this research used experimental with completely randomized design. The experimental treatment consists of two types of treatment that are combined with used 5 doses of VAM mixture (0 g/plant, 10 g/plant, 12,5 g/plant, 15 g/plant, 17,5 g/plant) and used two ways of inoculation ( inoculation when the seed is planted and inoculation when transplanting the seeds). Each treatment was repeated 3 times and each test are three plants. The parameters was observed the incubation period of the disease and the intensity of fusarium wilt as the main parameter and the measurement of pH, temperature, humidity room, and the degree of infection as supporting parameters. The results of this research showed that the dosage and inoculation of VAM mixture is not able to reduce the emergence of fusarium wilt on tomatoes, but it was able to extend the incubation period of fusarium wilt on tomato plants a dose with 10 g /plant inoculated plants when the seeds are planted and inoculation when transplanting the seeds.
KAJIAN PENYAKIT YANG DISEBABKAN OLEH CENDAWAN PADA TANAMAN CABAI MERAH (Capsicum annum L.) DI PERTANAMAN RAKYAT KABUPATEN BREBES Nita Wahyu Suwardani; Purnomowati Purnomowati; Eddy Tri Sucianto
Scripta Biologica Vol 1, No 3 (2014)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (620.412 KB) | DOI: 10.20884/1.sb.2014.1.3.554

Abstract

This research aimed to determine the various diseases caused by fungi, to identify the fungi causing the disease, and to determine the most dominant disease in red chili crops (Capsicum annum L.) from smallholder agriculture located in Kaligiri Sirampog Brebes. The research was a survey applying purposive random sampling technique. This study collected samples from five locations, within five plots placed diagonally at each site. This study picked ten infected plants from each plot, identified the disease; isolated and identified the fungi causing the disease. This research also measured the environmental factors such as temperature, humidity, and soil pH. The results showed diseases in red chili plants (Capsicum annum L.) were the leaf spot caused by Cercospora sp., the anthracnose caused by Colletotrichum sp., and the fusarium wilt caused by Fusarium sp., and the most dominant were leaf spot disease.
Co-Authors Eddy Tri Sucianto Eka Widiyarti Nita Wahyu Suwardani Uki Dwiputranto Uswatun Hasanah