Green manure as a Tool of organic produced potato (Solanum tuberosum L. cv. Amorosa)

Abstract

During September 2003 to August 2004 has been done study with winter common vetch Vicia sativa L. cv. MS Sirmium as pre-culture of followed vegetables. After "green manure" practicing on the same plots were set up potato cv. Amorosa. Soil samples were taken before common vetch sowing, after its decomposition and carrot. Carrot quality was established through chemical analyzing of total and soluble carbohydrates, vitamin C and proteins compared with control. Resulted by "green manure" soil humus, soil nitrogen, light available soil phosphorous and potassium are larger. After Ist gathering potato dimensions are characterized with increased average dimensions, yield per plant and yield in total as well. Total carbohydrate content at manure plots is amounted 17.02 %/100 mg d.m. that means 33.45 %/100 g d.m. increasing compared with control ones, while soluble content is 3.24 %/100 g d.m. and recorded 11.72%/100 g d.m. even. Protein content is increased for 4.22 %/100 g d.m. at green manure plots, differs of vitamin C content that is not higher compared with control and corresponded with literature data. Analyzed parameters are increased as result of potato tendency of soil potassium using.