Apr 18, 2014 - Australasian Plant Pathology Society Inc. 2014. Abstract A three-year study was conducted to determine the effect of urea and lime sulphur ...
Australasian Plant Pathol. (2014) 43:439–446 DOI 10.1007/s13313-014-0291-x
Effect of sanitation treatment and cultivar on saprophytic development of Blumeriella jaapii in integrated and organic sour cherry orchards Imre J. Holb & Vasileios P. Vasileiadis & Alex Vámos
Received: 17 October 2013 / Accepted: 1 April 2014 / Published online: 18 April 2014 # Australasian Plant Pathology Society Inc. 2014
Abstract A three-year study was conducted to determine the effect of urea and lime sulphur sanitation treatments on three saprophytic development stages of Blumeriella jaapii on two sour cherry cultivars in integrated and organic orchards. The sanitation treatments in the integrated orchard included sprays of urea applied in the autumn, sprays of urea followed by mulch cover, and non-sanitized control. Urea was replaced with lime sulphur in the treatments in the organic orchard. The percent survival of three saprophytic development stages of B. jaapii (i.e., saprophytic hyphal growth, mycelial aggregates, and presence of apothecia and/or winter acervuli) ranged between 11 and 70 % and between 21 and 67 % in the urea and lime sulphur treatments, in the integrated and organic orchards, respectively. In all years, all urea and lime sulphur treatments significantly (P
