IMPACT OF VENEZUELAN MIGRATION ON THE INFORMAL WORKFORCE OF NATIVE WORKERS IN COLOMBIA


Role of chitosan against grapevine downy mildew

The study of environmentally friendly active principles against downy mildew represents one of the main challenges in viticulture.In this context, the aim of the present trial was to investigate the efficacy of chitosan as a resistance elicitor against downy mildew and to study the metabolites involved in the interaction plant-chitosan-pathogen by

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Selective predation by fish: a further reason for the decline of native gammarids in the presence of invasives?

Predation by fish (rainbow trout and perch) on the invasive gammarids Dikerogammarus villosus and Echinogammarus ischnus and the natives Gammarus fossarum, Gammarus roeseli and Gammarus pulex was investigated under different substrate conditions (gravel, large stones, fine sand) in laboratory experiments.Gravel and stones (coarse substrates) should

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