INCIDENCIA Y DISTRIBUCIÓN GEOGRAFICA DEL MANCHADO DEL CÁLIZ DE JAMAICA EN GUERRERO, MÉXICO
Background: Roselle calyx spot (MCJ) causes losses of 80% of the yield of this crop. Objective: To know the geographical distribution of the leaf and calyx disease of the roselle in the producing localities and municipalities of the state of Guerrero. Methodology: The recognition area included the C...
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Veröffentlicht in: | Tropical and subtropical agroecosystems 2021-08, Vol.24 (3) |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Background: Roselle calyx spot (MCJ) causes losses of 80% of the yield of this crop. Objective: To know the geographical distribution of the leaf and calyx disease of the roselle in the producing localities and municipalities of the state of Guerrero. Methodology: The recognition area included the Costa Chica region (Ayutla de los Libres, Tecoanapa, San Marcos and Acapulco de Juárez), Costa Grande (Atoyac de Álvarez and Coyuca de Benítez) and the North region (Copalillo). The delimitation of the commercial plots considered a distance> 10 km, for a sampling in five of golds, evaluating the incidence and severity of MCJ. The information was integrated into a database of geographic information systems and the spatial pattern was analyzed. The variables were analyzed in random blocks, with five repetitions, under the procedure with proc rank and an analysis of variance proc glm, the separation of means was used by the Tukey-Kramer procedure and Spearman's linear correlation coefficients were calculated. Results: The disease has a differential geographical distribution, the highest incidence (> 75%) in calyx occurred in the municipalities of Tecoanapa and Ayutla, however, its presence in the leaves can increase the incidence in calyx in Acapulco, San Marcos, Copalillo and Coyuca de Benítez. The highest severity index was presented in Tecoanapa with 2.87, showing differences with Ayutla, Acapulco and San Marcos with 2.24, 2.06 and 1.04 respectively (p |
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ISSN: | 1870-0462 1870-0462 |
DOI: | 10.56369/tsaes.2998 |