The Perspective of Cultivation and Utilization of the Species Silphium Perfoliatum L. and Helianthus Tuberosus L. in Moldova

Abstract

Abstract. The species of Asteraceae family, sylph or cap plant, Silphium perfoliatum, cv.Vital and Jerusalem artichoke, Helianthus tuberosus, cv. Solar from the collection of nontraditional fodder plants, Botanical Garden  ( Institute )  of Academy of Sciences of Moldova, as study objects. The annual productivity of S. perfoliatum, cv.Vital was 14.28 kg/m2 of fresh mass and 2.41 kg/m2 of dry matter, H. tuberosus, cv. Solar - 16.3 kg/ m2 or 4.0 kg/ m2 respectively. Chemical composition absolutely dry substances of S. perfoliatum, cv.Vital: 15.94% raw protein, 3.25% raw fats, 29.96% raw cellulose, 165.17 mg/kg carotene and H. tuberosus, cv. Solar 9.32% raw protein, 1.93% raw fats, 21.29% raw cellulose, 8.75% mineral substances, 58.71% non-nitrogenous extractive substances it was established in the first harvesting. Stems of these species in autumn-winter accelerated release the humidity, are resistant to lodging, does not demand sophisticated equipment at harvesting, and can be harnessed for solid biofuel production; caloric capacity of the plant of S. perfoliatum reach 18.3 MJ/kg, and at the H. tuberosus - 18.7 MJ/kg.