Abstract
Summary The impact of applying Prestige 290 FS, as well as biological treatments: FZB 24 WG and Proradix WP on the infection of potato tubers by Rhizoctonia solani and Streptomyces scabiei, the sprout development rate and the yield of potato tubers of three cultivars (Cyprian, Finezja and Flaming) was studied in the years 2011–2013. The experiment was conducted in a randomized split-block method in 4 repetitions. The applied chemical treatment significantly increased the potato sprouting rate and decreased the percentage of tubers infected by R. solani when compared to the application of biological treatments, as well as not treated tubers. The treatment did not affect the infection rate of tubers caused by S. scabiei. The infection of tubers caused by R. solani did not depend on the cultivar, while in case of S. scabiei the highest infection rate was observable in case of the Cyprian cultivar. Applying both chemical and biological treatments did not affect the yield of tubers.
Highlights
The experiment was conducted in a randomized split-block method in 4 repetitions
The applied chemical treatment significantly increased the potato sprouting rate and decreased the percentage of tubers infected by R. solani when compared to the application of biological treatments, as well as not treated tubers
The treatment did not affect the infection rate of tubers caused by S. scabiei
Summary
PTV – Potato Virus Y PLRV – Potato Leafroll Virus je, aby obliczyć dokładną ilość preparatu do zaprawiania. Porównując badane zaprawy, istotnie wyższe wschody wystąpiły na obiektach, w których zastosowano zaprawę Prestige 290 FS, niż po zastosowaniu zapraw biologicznych FZB 24 WG i Proradix WP oraz bulw niezaprawionych. W czasie trzyletnich badań procentowy udział bulw porażonych przez R. solani zależał od zastosowanych zapraw oraz warunków pogodowych, natomiast nie zależał od zastosowanych odmian. Zastosowanie zaprawy chemicznej Prestige 290 FS istotnie ograniczyło procent bulw (8,0%) porażonych przez R. solani w porównaniu do zapraw biologicznych: Proradix WP (44,0%) oraz FZB 24 WG (50,2%) Zaprawianie bulw jest jedynym ze sposobów wyeliminowania sprawców chorób przenoszonych przez materiał sadzeniakowy, aby w czasie wschodów rośliny nie były narażone na rizoktoniozę ziemniaka i szkodniki glebowe (Osowski 2004; Bernat i Osowski 2006).
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