@article{Wojdyła_Ptaszek_Jarecka-Boncela_2023, title={Fungicides and biotechnical agents in the protection of heathers against Pestalotiopsis sydowiana and their influence on plant growth}, volume={22}, url={https://czasopisma.up.lublin.pl/index.php/asphc/article/view/4492}, DOI={10.24326/asphc.2023.4492}, abstractNote={<p>In the protection of heathers against shoot dieback caused by <em>Pestalotiopsis sydowiana</em>, the highest percentage effectiveness of 92.6% to 100% was found on plants sprayed 12 times every 7 days with the active substances: iprodione, pyraclostrobin + boscalid and trifloxystrobin and with the biotechnical agents containing: microcrystalline chitosan and extract from grapefruit seed and pulp, with an efficacy of 76.9% to 100%. The active substances like chlorothalonil, fluopyram + trifloxystrobin, iprodione, pyraclostrobin + boscalid, as well as microcrystalline chitosan and extract from grapefruit seed and pulp also stimulated plant growth. Heather plants sprayed with these agents and also those sprayed with cyprodinil + fludioxonil, trifloxystrobin and potassium carbonate + monopotassium phosphate were found to produce the highest number of new shoots. An increase in the fresh weight of the aboveground parts of the heather plants of more than 55.7% compared with the control plants was found after spraying the plants with the active substances such as: fluopyram + trifloxystrobin, iprodione, pyraclostrobin + boscalid, cyprodinil + fludioxonil, trifloxystrobin and with the biotechnological agents containing microcrystalline chitosan extract from grapefruit seed and pulp, and potassium carbonate + monopotassium phosphate. Similarly, the highest average dry weight of the aboveground parts was found after the application of these agents.</p>}, number={2}, journal={Acta Scientiarum Polonorum Hortorum Cultus}, author={Wojdyła, Adam T. and Ptaszek, Magdalena and Jarecka-Boncela, Anna}, year={2023}, month={Apr.}, pages={61–72} }