Abstract
A field experiment was carried out in 2011–2013 to evaluate the effect of foliar application of UPP-208 200 SL formulation containing salicylic acid (SA; 200 g/l) and surface acting agents on infestation of fungal diseases occurring in winter wheat. Wheat plants were treated with a single spray of UPP-208 200 SL at a growth stage of BBCH 26 or BBCH 32 and the split doses of 0.5, 1.0 and 2.0 l/ha applied at BBCH 26 and BBCH 32. Salicylic acid partially decreased wheat infestation by Blumeria graminis, Mycosphaerella graminicola and Pyrenophora tritici-repentis. However, the level of disease control varied according to the experimental year, salicylic acid application time and rate. Generally, the use of split applications of salicylic acid resulted in a better protection against wheat diseases than the use of single applications.
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