Effects of Combination of Copper Fungicide and Plant Activator on Late Blight and Quality Criteria of Potato

Late blight caused by Phytophthora infestans is one of the most important fungal diseases that cause damage to both green parts and tuber potato plant limits cultivation. Systemic fungicides are mostly preferred farmers in control late blight. The fact systemic health problems terms human environmental has revealed need for research on methods do not threaten health. In recent years, successful results have been obtained many with activators known as Induced Resistance (ISR) promoters. This study was carried out spring season 2016-2017 observe effect copper fungicide activator (Lactobacillus acidophilus fermentation product) combination disease some quality criteria tubers experimental plots Ege University Ödemiş Vocational School district İzmir province. experiment planned two separate experiments Marabel Melody cultivars. established according a split-plot design four replications. this study, treatments yield such number, width, length, single weight, per decare, effects pesticides severity parameters were evaluated. When data result evaluated, it determined application had positive cultivars compared plots. highest number from where (Isr-2000) applied. Significant increase average weight decare when conclusion, use contact combinations period within scope sustainable agriculture promising an alternative organic agriculture.