Characterization of agro-biological response of mid-early potato breeding lines and varieties in biological production

Emilia Nacheva, Stoika Masheva, Vinelina Yankova

Abstract: Studies on the agrobiological response of five potato varieties and breeding lines have been conducted at four different systems for organic production during the period 2008–2010 on the experimental plots of the Maritsa Vegetable Crops Research Institute, Plovdiv. The results of two factor analysis of variance demonstrate presence of significant differences between the studied genotypes in all morphological and economic characters. The studied varieties and lines are with lower standard and total yield compared to those recorded in conventional production. The amplitude of loses in yield in organic systems varied from 16.4 to 28.3%. Varieties Perun and Adreta combining relatively high productivity level (over 2000 kg/da) and specific insusceptibility to late blight (Phythophtora infestans), early blight (Alternaria solani) and Colorado beetle (Leptinotarsa decemlineata), are described with complex value in organic potato production.

Keywords: diseases; organic production; pests; potato; yield

Date published: 2017-07-04