Effect of coffee management, time and climate on the occurrence of insect pathogenic fungi in the soil

The effect of farming system, time and climatic zone on the occurrence of soil borne insect pathogenic fungi was studied in 2003 and 2006 in experimental plots established in low dry and low wet coffee growing zones in Nicaragua and Costa Rica. In the conventional plots, intensive coffee management by mineral fertilizers and chemical pesticides was applied. Only coffee pulp was applied in the organic plots. Soils samples were collected and insect pathogenic fungi were obtained from the soil by the Galleria mellonella bait method B. bassiana, M. anisopliae and P. lilacinus were the insect pathgenic fungi mos frequently found, and the total occurrence of these fungi were 75.6% in 2003 and 67.5% in 2006. Open sun and shading did no affect the frequency of occurrence of B. bassiana and P. lilacinus in conventional coffee systems M. anisopliae was not recovered from samples from open sun fields and just at low rates (6.7%) in coffee fields shaded with a combination of evergreen species and deciduos trees that were nitrogen fixing.

Bibliographic Details

Main Authors:	115704 Sand, R., 77966 Hidalgo, E., 83369 Klingen, I., 95785 Monzón, A.J., 15193 Norwegian University of Life Science, Aas (Noruega), 15191 Norwegian Institute for Agricultural and Environmental Research, Hogskoleveien (Noruega), 3909 CATIE, Managua (Nicaragua). Proyecto MIP, 19844 Universidad Nacional Agraria, Managua (Nicaragua), 95778 Monzón Centeno, A.J.
Format:	biblioteca
Language:	eng
Published:	Hogskoloveien (Noruega) 2007
Subjects:	COFFEA ARABICA, BEAUVERIA BASSIANA, METARHIZIUM ANISOPLIAE, HONGOS ENTOMOPATOGENOS, INFECCION EXPERIMENTAL, MANEJO DEL CULTIVO, APLICACION DE ABONOS, SOMBRA, FACTORES CLIMATICOS, ZONA ARIDA, ZONA HUMEDA, NICARAGUA, COSTA RICA,
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