Journal of Food, Agriculture and Environment

Efficiency of Pochonia chlamydosporia in Meloidogyne incognita control in lettuce crop (Lactuca sativa L.)

Author(s):

Cláudia R. Dias-Arieira ^1*, Simone de M. Santana ¹, Leandro G. de Freitas ², Tatiana P. L. da Cunha ¹, Fábio Biela ¹, Heriksen H. Puerari ¹, Fernando M. Chiamolera ¹

Recieved Date: 2011-05-28, Accepted Date: 2011-10-04

Abstract:

The aim of this study was to evaluate the efficiency of the isolate Pc-10 of the fungus Pochonia chlamydosporia in the Meloidogyne incognita control, in two areas of lettuce production. Two experiments were conducted in areas naturally infested with the nematode, located in northwest Paraná, Brazil. The nematode initial population (IP) was evaluated before of the fungus application. The fungus, produced on rice grain, was applied to the soil at concentrations of 0, 10, 20 and 30 g, together with 100 g of cattle manure. Each gram of the product contained 1 x 10⁸ fungal spores. After 15 days, seedlings of lettuce cv. Babá de Verão were planted and grown for 45 days. Posteriorly, the final population of the nematode in the soil ; the number of galls and eggs + second-stage juveniles (J₂) per root system and the fresh and dry weight of the aerial part were evaluated. In one of the experimental areas, the fungus was found to reduce the number of nematode eggs irrespective of the dosage, while in the other area, the treatments reduced the final population of J₂ in the soil. An increase in vegetative parameters was observed in the area of lower soil fertility when doses of 10 and 30 g of the product were used.

Keywords:

Antagonistic fungi, biological control, management, Meloidogyne incognita, Pochonia chlamydosporia, root-knot nematode

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Journal: Journal of Food, Agriculture and Environment
Year: 2011
Volume: 9
Issue: 3&4
Category: Agriculture
Pages: 561-563

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