EVALUATION OF THE EFFICIENCY OF PAECILOMYCES LILACINUS AND TRICHODERMA HARZIANUM AS BIOLOGICAL CONTROL AGENTS AGAINST ALTERNARIA SOLANI CAUSING EARLY BLIGHT DISEASE OF EGGPLANT

ABSTRACTAbilities of compost and compost plus to enhance tomato resistance to early blight (Alternaria solani Sor.)Compost can be used for organic fertilizer and also for disease control. To enhance its effectiveness, compost was fortified with antagonistic microbes and called compost plus. The aims of this study were to examine the potential of compost plus and its component, compost and antagonistic fungi (Trichoderma harzianum, Papulaspora sp. and Paecylomyces sp.) to enhance tomato resistance to early blight disease (Alternaria solani) and also to obtain the effective and efficient application methods of compost plus for enhancing the plant resistance. The results showed that compos, compost plus and T. harzianum enhanced the tomato resistance so that suppressed early blight disease by 39.2%-40.1%. The application methods were not significantly influenced the effectiveness of compost plus in enhancing the plant resistance. The application of compost plus as seed dressing, in the planting site or spraying water extract onto leaves solely or in combination suppress early blight disease by 31.96%-42.08%. The separation between the treatments and pathogen inoculation indicated the increase or induction of tomato resistance to the disease.Keywords: Antagonistic microbes, Trichoderma harzianum, Application method, Induced resistanceABSTRAKKompos selain dapat berfungsi sebagai pupuk organik juga dapat dimanfaatkan untuk pengendalian penyakit. Guna meningkatkan keefektifannya, kompos ditambah dengan jamur antagonis dan disebut ‘kompos plus’. Penelitian ini bertujuan untuk menguji kemampuan kompos plus dan komponen penyusunnya yaitu kompos dan jamur antagonis (Trichoderma harzianum, Papulaspora sp. dan Paecylomyces sp.) untuk meningkatkan ketahanan tanaman tomat terhadap penyakit bercak coklat dan mendapatkan cara aplikasi kompos plus yang efektif dan efisien untuk meningkatkan ketahanan tanaman. Hasil percobaan menunjukkan bahwa kompos plus, kompos, dan T. harzianum dapat meningkatkan ketahanan tanaman tomat sehingga menekan penyakit bercak coklat sebesar 39,2%-40,1%. Cara aplikasi kompos plus tidak berpengaruh secara nyata terhadap kemampuannya dalam meningkatkan ketahanan tanaman. Aplikasi kompos plus dengan cara perendaman benih dalam air rendaman kompos plus, aplikasi pada lubang tanam atau penyemprotan dengan air rendaman kompos baik secara tunggal maupun dengan cara gabungan dapat menekan penyakit bercak coklat sebesar 31,96%-42,08%. Pemisahan tempat antara perlakuan dengan inokulasi patogen mengindikasikan adanya peningkatan atau induksi ketahanan tanaman terhadap penyakit.Kata Kunci: Mikroba antagonis, Trichoderma harzianum, Cara aplikasi, Induksi ketahanan

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Biocontrol of seed-borne Alternaria raphani and A. brassicicola

Canadian Journal of Microbiology ◽

10.1139/m87-149 ◽

1987 ◽

Vol 33 (10) ◽

pp. 850-856 ◽

Cited By ~ 27

Author(s):

G. Vannacci ◽

G. E. Harman

Keyword(s):

Biological Control ◽

Host Range ◽

Trichoderma Harzianum ◽

Pythium Species ◽

Biological Control Agents ◽

Fusarium Sp ◽

Chamber Studies ◽

Growth Chamber Studies ◽

Radish Seedlings

Forty-two microorganisms were tested as biological control agents against Alternaria raphani and A. brassicicola. Tests were conducted for in vitro antagonistic ability, for ability to control the pathogens on naturally infected seeds germinated on moistened blotters, and in planting mix in growth chamber studies, and for their ability to reduce pod infection. The organisms tested were obtained from cruciferous seeds or were strains already identified as being effective against soil-borne Pythium species. The blotter test indicated that six organisms increased both the number of healthy seedlings and the number of seedlings produced from A. raphani infected radish seeds. An additional seven strains improved either germination or increased the number of healthy seedlings. Twenty-nine organisms increased the number of healthy cabbage seedlings from A. brassicicola infected seeds, but total germination was not modified by any treatment. Experiments in planting mix showed that five antagonists (Chaetomium globosum, two strains of Trichoderma harzianum, T. koningii, and Fusarium sp.) increased the number of healthy plants in both radish samples tested, while four additional antagonists provided a significant increase in only one of the samples tested. The five antagonists that consistently increased numbers of healthy radish seedlings also decreased pod infection by A. raphani. None were as effective as iprodrone, however. Several effective antagonists were found to be mycoparasitic against Alternaria spp. Some strains of Trichoderma previously found to be effective against Pythium spp. were also effective against Alternaria spp., indicating that these strains have a wide host range.

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Efficacy and Safety of Some Plant Extracts against Tomato Early Blight Disease Caused by Alternaria solani

Plant Pathology Journal ◽

10.3923/ppj.2011.115.121 ◽

2011 ◽

Vol 10 (3) ◽

pp. 115-121 ◽

Cited By ~ 14

Author(s):

A.S. Derbalah ◽

M.S. El-Mahrouk ◽

A.B. El-Sayed

Keyword(s):

Plant Extracts ◽

Early Blight ◽

Alternaria Solani ◽

Efficacy And Safety ◽

Blight Disease

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Related wild species for breeding of tomato resistant to early blight disease (Alternaria solani)

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/482/1/012019 ◽

2020 ◽

Vol 482 ◽

pp. 012019

Author(s):

Chaerani

Keyword(s):

Wild Species ◽

Early Blight ◽

Alternaria Solani ◽

Related Wild Species ◽

Blight Disease

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Non-Synergistic Effect of Trichoderma harzianum and Glomus spp. in Reducing Infection of Fusarium Wilt in Banana

Pathogens ◽

10.3390/pathogens8020043 ◽

2019 ◽

Vol 8 (2) ◽

pp. 43 ◽

Cited By ~ 2

Author(s):

Arfe Castillo ◽

Cecirly Puig ◽

Christian Cumagun

Keyword(s):

Biological Control ◽

Synergistic Effect ◽

Fusarium Oxysporum ◽

Fusarium Wilt ◽

Trichoderma Harzianum ◽

Root Weight ◽

Biological Control Agents ◽

Competitive Effects ◽

Glomus Spp ◽

Race 4

Philippine banana is currently threatened by Fusarium oxysporum f. sp. cubense Tropical Race 4 (FocR4). This study investigated the use of Trichoderma harzianum pre-treated with Glomus spp, as a means of managing Fusarium wilt on young ‘Lakatan’ banana seedlings. Results showed that Glomus applied basally significantly improved banana seedling growth with increased increment in plant height and pseudostem diameter and heavier root weight. The application of Glomus spp. alone offered 100% protection to the ‘Lakatan’ seedlings against FocR4 as indicated by the absence of the wilting symptom. A combination of T. harzianum and Glomus spp. also gave significant effect against Fusarium wilt through delayed disease progression in the seedlings but was not synergistic. Competitive effects were suspected when application of the two biological control agents on banana roots was done simultaneously.

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