Incidence of and yiel loss caused by maize rayado fino virus in maize cultivars in Ecuador
Three sowing date trials, each planted with one cultivar, were performed to measure the natural in¬cidence of the Maize rayado fino virus (MRFV). The lowest incidences (1-6%) were obtained at the sowing dates normally practised in the tested regions. Earlier or later sowing dates had higher to much...
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