Fitopatologia Brasileira (2007) 32, 70-74

Rui S. Júnior, Roberto Beltrán, Antonio Vicent, Josep Armengol, José García-Jiménez and Érika V. Medeiros (2007)
Controle biológico de Monosporascus cannonballus com Chaetomium
[Biological control of Monosporascus cannonballus by Chaetomium]
Fitopatologia Brasileira 32 (1), 70-74
Abstract: Melon collapse caused by Monosporascus cannonballus is one of the main diseases that affect this cucurbit. The objective of this research was to study the biological control of M. cannonballus by Chaetomium. Infested substrates with 0.5, 1, 2, 4 and 8 x 10⁵ CFU g^-1 were introduced in plates where seeds of melon type Piel de Sapo cv. PS 1430 were sowed in seeding trays after two weeks of incubation. The seedlings were transplanted to pots with a similar substrate, infested additionally with 2.5 x 10⁴ CFU of Chaetomium per gram and 20 CFU of M. cannonballus per gram of substrate. Three controls were considered: one infested with Chaetomium alone, another with M. cannonballus and one without any treatment. The experimental design was completely randomized with five replicates. General disease index and control percentage were evaluated forty-five days after transplant. The General disease index varied according to the increased Chaetomium concentration. The results demonstrated that 4 and 8 x 10⁵ CFU of Chaetomium g^-1 were equivalent to 0.9 and 0.6, respectively. The statistical analysis showed that 4 and 8 x 10⁵ CFU g^-1 of Chaetomium concentration were the most efficient treatments, with control percentage higher than 55 %, indicating the potential of Chaetomium to control M. cannonballus.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Portuguese)
Full text of article
Database assignments for author(s): Josep Armengol, Antonio Vicent, José Garcia-Jimenez

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
evaluation - screening - selection

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Monosporascus cannonballus	Melon (Cucumis melo)
Chaetomium (genus - antagonists)	Monosporascus cannonballus	Melon (Cucumis melo)