Possibilities of integrated protection against Alternaria leaf spot (Alternaria spp.) of Chinese cabbage using three different groups of plant protection products Możliwości integrowanej ochrony kapusty pekińskiej przed czernią krzyżowych (Alternaria spp.) z zastosowaniem trzech różnych grup preparatów Agnieszka Włodarek*, Jan Sobolewski, Józef Robak
SummaryThe aim of the field experiments carried out in 2011-2013 was to evaluate the usefulness of fungicides, natural products and a growth stimulator used in integrated protection against Alternaria leaf spot of Chinese cabbage (Alternaria spp.). The following products were evaluated: two fungicides -Amistar 250 SC and Signum 33 WG, the natural products -Timorex Gold 24 EC and a strawberry extract and a growth stimulator Huwa-San TR 50. The examined products showed high effectiveness in protection of Chinese cabbage against Alternaria leaf spot.
The activity of bacteria B125, PT60 (Enterobacter cloacae) and PZ9 (Bacillus sp.) was examined in field cultivation of lettuce and cucumber. In the experiments with lettuce the mixture of PZ9 + B125 was applied for transplants production by drenching of growing medium with bacterial suspension or mixing with alginate microcapsules. Controls were water or thiram. The best transplants growth was obtained with bacterial suspension. However, after transplanting to field the yield and health of treated lettuce did not differ compared to untreated control. The microcapsules and thiram inhibited growth of young plants and reduced lettuce yield. Thiram increased plant infection by Sclerotinia sclerotiorum. In the experiments with cucumber bacteria PT60 was applied as suspension for plant drenching or in form of microcapsules for seed coating. The microcapsules reduced cucumber germination, but the yield did not differ between treatments. PT60 significantly reduced the symptoms of downy mildew.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.