LAUSR

In the changing climate conditions, the knowledge of the impact of weather factors on the quality of crop plant yield is of great significance. The field research was conducted in 2015-2017 in the area of eastern Poland in Biała Podlaska commune, in Lublin Voivodship, on light, acidic soil. The purpose of the study was to assess the impact of meteorological conditions and cultivation methods with the application of growth biostimulators and herbicide on dry matter and starch content in tubers of three edible potato cultivars. The examined factors were: I. cultivars of edible potato – Bellarosa, Owacja, Vineta, II. methods of using growth biostimulators: GreenOk-Uniwersal Pro and Asahi SL, as well as their combination with herbicide Avatar 293 ZC. A close relationship between pluvio-thermal conditions, cultivation methods and the percentage content of dry matter and starch in edible potato tubers was proven as a result of the conducted study. The highest concentration of the discussed components was obtained in 2015, in which there was a shortages of precipitation. The methods of cultivation employed in the experiment had a positive impact on the rise in dry matter and starch content in potato tubers in comparison with the control object. The highest dry matter (on average 23.31%) and starch content on average 16.31% in potato tubers was obtained after the application of biostimulator GreenOk-Universal Pro and herbicide Avatar 293 ZC (object 4).