Evaluación de la gallinaza en el control de Plasmodiophora brassicae en repollo
Poultry manure Evaluation in the control of Plasmodiophora brassicae in cabbage
Keywords:
control cultural, hernia del repollo, enmiendas orgánicas, viruta de madera (es)cultural control, club root diseases, organic amendments, wood residues (en)
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como medio de control cultural de la enfermedad. Plántulas de la variedad Bola Verde de repollo de 60 días de germinadas, fueron transplantadas al terreno con la aplicación de gallinaza pura y de piso, de dos y cuatro
meses de descomposición, respectivamente. Se probaron dosis de 100, 200, 300 y 400 g de gallinaza de piso por planta y 50, 100, 200 y 300 g de gallinaza pura por planta. A los 120 días del trasplante, se cosecharon las plantas y se midió la producción del cultivo y los niveles de daño causados por el patógeno. Todas las plantas muestreadas presentaron
síntomas. El índice de enfermedad en la parcela testigo fue de 9.9. En las parcelas con gallinaza, la severidad de la enfermedad disminuyó significativamente, especialmente cuando se empleó gallinaza pura. El índice de enfermedad mínimo (6.6) se obtuvo aplicando 300 g de gallinaza pura.
cabbage field in the savanna of Bogotá (Colombia, South America). Cabbage seedlings of Bola Verde variety received the application of poultry litter or poultry manure at transplanting, sixty days after germination. Four doses were used, in g/plant: 100,200, 300 and 400 of poultry litter, and 50, 100, 200 y 300 of poultry manure. At harvest, 120 days after transplanting, cabbage was harvested and yield, incidence and severity were recorded. All plants showed the presence of the disease, but with different levels of severity. Mean disease index in non-treated plots was 9.9, significantly higher than the disease index showed in treated plots. Attacks were less severe in plots treated with poultry manure, compared with plots treated with poultry litter. The lowest disease index of 6.6 was obtained with 300g of poultry manure.
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