Efikasnost bioloških preparata u kontroli bakteriozne pegavosti paprike

Abstract

Bakteriozna pegavost lišća koju izaziva Xanthomonas euvesicatoria je jedno od najznačajnih oboljenja paprike u Srbiji. U cilju zaštite paprike, korišćeni su biološki preparati Serenade ASO, Erwix, Bakterije, Ekstrasol i Bacillomix. Kao standard korišćen je preparat na bazi bakar-hidroksida (Everest). Ogled je postavljen u Institutu za povrtarstvo u Smederevskoj Palanci tokom leta 2023. godine. Proučavanja su obavljena na sorti paprike Paraćinka u uslovima veštačke inokulacije u stakleniku. Najefikasniji je bio preparat na bazi bakar-hidroksida (96%), dok su biološki preparati ispoljili nižu efikasnost: Serenade ASO (71%), Bakterije (61%), Ekstrasol (61%), Erwix (55%) i Bacillomix (54%). Ipak, svi proučavani tretmani su značajno smanjili intenzitet oboljenja u odnosu na kontrolu. Eksperiment je izveden u stakleniku bez klimatizacije, pri visokim spoljnim temperaturama, što je moglo nepovoljno uticati na efikasnost preparata baziranih na biološkim agensima. Prilikom narednih ogleda neophodno je obezbediti kontrolisane uslove. Treba isprobati i različito vreme primene i integraciju sa drugim merama zaštite.

Bacterial spot caused by Xanthomonas euvesicatoria is one of the most important pepper diseases in Serbia. In order to control this disease, we tested efficacy of commercially available biological products: Serenade ASO, Erwix, Bakterije, Ekstrasol and Bacillomix. A preparation based on copper hydroxide (Everest) was used as a standard treatment. The experiment was set up at the Institute for Vegetable Crops in Smederevska Palanka during the summer of 2023. Experiment was performed on pepper variety Paraćinka under artificial inoculation in a greenhouse. The most efficient was the standard treatment based on copper hydroxide (96%), while tested biocontrol treatments showed statistically lower efficacy: Serenade ASO (71%), Bacteria (61%), Ekstrasol (61%), Erwix (55%) and Bacillomix (54%). However, all tested treatments significantly reduced intensity of the disease compared to the control. The experiment was performed in a nonclimatized greenhouse, which could adversely affect the effectiveness of biocontrol treatments. Therefore, subsequent trials, should be carried out in controlled conditions. Different application times and integration with other protection measures should also be tested.