You have access
The Influence of Calcium Sprays to Reduce Fungicide Inputs Against Apple Scab [Venturia inaequalis (Cooke) G. Wint.]
Glynn C. Percival and Ian Haynes
Arboriculture & Urban Forestry (AUF) September 2009, 35 (5) 263-270; DOI: https://doi.org/10.48044/jauf.2009.040