Results of researches regarding efficacy of cultivation and use of Helianthus tuberosus L. × Helianthus annuus L. are highlighted in the article. Helianthus tuberosus L. × Helianthus annuus L. belongs to the Asteraceae family and created by the method of interspecific hybridization of Jerusalem artichoke (Helianthus tuberosus L.) with sunflower (Helianthus annuus L.). Research conducted during 2009-2011 years under conditions of right bank Polissya of Ukraine. Helianthus tuberosus L. × Helianthus annuus L. variety Start was used in our trials. Influence of cultivation technology elements on plants growth and development stages are stated in the article. It was determined that during vegetation period Helianthus tuberosus L. × Helianthus annuus L. does not go through the full development cycle and reach only flowering stage, rarely beginning of fruiting stage. Vegetation period from full emerging till bottom leaves wilting lasts 162 days by planting in third decade of April. Research results on Helianthus tuberosus L. × Helianthus annuus L. growth and development peculiarities under conditions of right bank Polissya of Ukraine are given and generalized in the article. Helianthus tuberosus L. × Helianthus annuus L. planting conducted in two terms (third decade of April and second decade of May) and different planting schemes (7020, 7035 and 7050 cm). During the years of research under conditions of right bank Polissya of Ukraine the third decade of May was found as optimal planting term. The best planting scheme determined during plants growth parameters measurement is 7050 cm. The original data on the yield of the aboveground mass and plant tubers are given. The directions of use of phyto-raw materials are described Helianthus tuberosus L. × Helianthus annuus L.
Helianthus tuberosus L. × Helianthus annuus L., cultivation peculiarities, yielding capacity, growth and development stages, phyto raw use