Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.

Copyright © Wydawnictwo Akademii Rolniczej we Wroclawiu, ISSN 1505-0297

Ratajkiewicz H. , Baranowski T. 2004. EFFECT OF WATER QUALITY ON THE EFFECTIVENESS OF FUNGICIDES AGAINST POWDERY MILDEW (Sphaerotheca pannosa var. rosae), EJPAU 7(1), #02.
Available Online: http://www.ejpau.media.pl/volume7/issue1/horticulture/abs-02.html

ABSTRACT

Saprol 190 EC (trifryna) and Rubigan 12 EC (fenarimol) were diluted in 6 types of water without any addition of adjuvants, and they were applied against powdery mildew on roses in field cultivation. Only the emulsions of fungicides diluted in the water from Poznań were prepared with any addition of a surfactant (Citoewtt AL). Generally, no significant effect of the water type on the efficacy of fungicides against powdery mildew on roses was found. Slightly better results of rose protection were obtained when for the dilution of Saprol 190 EC very soft waters (distilled water and water after reverse osmosis) and well water from Szczepankowo were used. On the other hand, in case of Rubigan 12 EC, better results were obtained with very hard waters (hardened and well water from Koœcian i Œmigiel) and well water from Szczepankowo. An essential influence on the increase of fungicides effectiveness was exerted by the addition of a surfactant (Citowett AL).

Key words: water quality, triforine, fenarimol, rose, Sphaerotheca pannosa.

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