Pseudomonas syringae pv. phaseolicola populations and halo blight severity in beans grown alone or intercropping with maize in northern Tanzania.

agua air temperature canopy contenido de humedad continuous cropping couvert cubierta de copas cultivo continuo cultivo intercalado culture continue culture intercalaire eau feuille hojas intercropping leaves lluvia moisture content pathogenese pathogenesis pathogenicity phaseolus vulgaris pluie population change pseudomonas syringae rain soil morphological features symptome symptoms tanzania tanzanie temperatura del aire teneur en eau trait morphologique du sol water zea mays