Economic evaluation of technology for organic production of raspberries

摘要

The investigations were carried out during the period 2013-2016 in the experimental field of the town Kostinbrod at the Institute of Agriculture - Kyustendil, Bulgaria. Cultivars Willamette and Lyulin has developed at a distance of 2.50 x 0.50 m or 880 plants/da. Drip irrigation rate of 80% ET was applied. The influence of four types of fertilization was examined.Invested resources for creating biological raspberry plantation amounted to 875.4 BGN/da in variants without fertilization, to 886.92 BGN/da at fertilization with Biohumax, 894.8 BGN/da with Humustim and 913.88 BGN/da with Hemozym bio 5+ Hemofol H4.During the fruiting period the variant with Humustim fertilization is characterized with low cost production - 1.24 BGN/kg and the highest is at fertilization with Hemozym+Hemofol - 1.38 BGN/kg.From an economic point of view, the additional costs of fertilization in organic production of raspberries are justified and lead to greater economicefficiency.