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Toekidjo Martoredjo
Fakultas Pertanian Universitas Gadjah Mada
Agriculture, Biological Sciences & Forestry

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Peran Infeksi Jamur dalam Memperparah Kerusakan Buah Kakao Akibat Serangan Helopeltis sp. Toekidjo Martoredjo; Djungdjunan Ardy; Hermansyah Hermansyah; Tri Sunardi
Jurnal Perlindungan Tanaman Indonesia Vol 1, No 1 (1995)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (7571.637 KB) | DOI: 10.22146/jpti.9307

Abstract

Cocoa pod devastation caused by combine inoculations between pest and pathogen., either between Helopeltis theobromae and Botryodiplodia theobromae or between H. theobromae and Colletotrichum gloeosporioides, more sever than total single inoculation only by pest (H. theobromae) or pathogen (B. theobromae and C. gloeosporioides).
Virulensi beberapa Isolat Colletotrichum musae terhadap Buah Pisang dan Ketahanan Beberapa Buah Kultivar Pisang terhadap Colletotrichum musae Toekidjo Martoredjo
Jurnal Perlindungan Tanaman Indonesia Vol 1, No 1 (1995)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (7909.63 KB) | DOI: 10.22146/jpti.9316

Abstract

Colletotrichum musae was isolated from banana cultivar of Ambon Hijau, Ambon Kuning, Emas, Gabu, Kepok, Kidang, Raja Gintung, Raja Sepet, Raja Temen, Raja Uter, Susu, and Tanduk. Virulency test showed that Raja Sepet, Raja Temen, and Susu C. musae isolates much more virulent than Tanduk isolate, while Ambon Kuning isolates its virulent is between two those groups. So Raja Sepet isolate is the highest virulent isolate and Tanduk isolate is the lowest virulent one. Resistancy test showed that Raja Temen, Ambon Hijau, and Raja Uter banana cultivars are much more resistant than Raja Gintung and Tanduk banana cultivars, while Raja Lumut, Kepok, Susu, Ambon Kuning, and Raja Uter banana cultivars their resistancy are between two those groups. So Ambon Hijau banana cultivar is the highest resistant banana cultivar and Tanduk banana cultivar is the lowest resistant one.
Pengaruh Daun Tanaman dalam Pemeraman terhadap Perkembangan Antraknos pada Pisang Ambon Toekidjo Martoredjo; Wahyu Budiasih; Ambarwati Harsojo Tjokrosoedarmo
Jurnal Perlindungan Tanaman Indonesia Vol 4, No 1 (1998)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (5270.29 KB) | DOI: 10.22146/jpti.9834

Abstract

Using plant leaves such as banana leaves, glyricidia leaves, and rice straw for ripening resulted in lower ripening stage score than control or using chemical such as ethrel, although statistically they are not siginificantly different. Glyricidia leaves and rice straw inhibit disease symptom representing anthracnose (Colletotrichum musae) development on Gros-Michel banana.
Dinamika Populasi Pseudomonas solanacearum pada Rizosfer Tanaman Bukan Inang Triwidodo Arwiyanto; Elizabeth Handini; Toekidjo Martoredjo
Jurnal Perlindungan Tanaman Indonesia Vol 3, No 2 (1997)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.12962

Abstract

Bacterial wilt caused by Pseudomonas solanacearum is a main limiting factor in the production of tobacco. The objective of this study is to investigate the survival of P. solanacearum in the rhizosphere of presumed nonhost plants. The results indicated that in the sugarcane rhizosphere, the pathogen population decreased along with the time course. The bacteria could not infect the root of sugarcane. On the other hand, the pathogen could infect the root of Mimosa invisa, although the population also decreased along with the time course.
Co-Authors Ambarwati Harsojo Tjokrosoedarmo Djungdjunan Ardy Elizabeth Handini Hermansyah Hermansyah Tri Sunardi Triwidodo Arwiyanto Wahyu Budiasih