Field Resistance of Black Currant Cultivars ( Ribes NigrumL.) to Diseases and Pests
DOI:
https://doi.org/10.71318/apom.1998.52.1.6Keywords:
Black currants, Ribes nigrum, cultivars, growth, yield, disease, pest, susceptibility, field resistanceAbstract
The performance of 16 black currant cultivars was evaluated during three or six seasons, no pesticides were applied. Annual growth, yield and berry size were recorded, and the level of diseases and pests was estimated. The infections of the diseases American powdery mildew ( Sphaewtheca mors-uvae(Schwein.) Berk. & Curt), leaf spot ( Gloeosporidiella ribis(Libert) Petrak) and white-pine blister-rust ( Cronartium ribicola(J. C. Fischer) were rather serious, while insects were not a problem. Ribes nigrumL. cv. 'Titania' had the greatest disease resistance and a high yield. The cultivars 'Ben Alder,' 'Ben Conan,' 'Ben Lomond,' 'Ben Sarek,' 'Ben Tirran,' 'Ben Tron' were susceptible to diseases and also had high yields. These cultivars therefore are recommended for organic or low-chemical-input systems. 'Stor Klas,' 'Hedda' and 'Risager' were susceptible to diseases and had low yields and can't be recommended.
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