Research of the Influence of Some Technological Sequences on Different Ricinus communis L. Genotypes, under the Influence of Pedoclimatic Conditions from the Center of the Moldova Region, Romania

Abstract

astor oil plant (castor bean) has been widely accepted as an agricultural solution for all subtropical and tropical areas that need low-cost commercial crops and at the same time provide traditional agriculture with stable income, obtained from current unproductive lands. In Romania, this plant is almost not cultivated at all, it offers important perspectives to those who want to lay the foundations of a business in the agricultural field. In Romania, castor oil plant is mainly grown in the south of the country. The growth of areas with this plant is limited by climatic conditions and especially by the fall of the first hoar-frost in autumn, which can compromise the production of plants secondary racemes. The increasingly climate change has led to the widening of the castor bean cultivation area, which is producing good production in the central area of Moldova if all the technological stages are carried out in optimal conditions. The research aimed to identify the genotype with the greatest adaptability to the pedoclimatic conditions in the area in order to establish the optimal sowing epoch and the optimal nutrition space to obtain the largest production and the best quality seeds. Results obtained during the research period (2018-2020) highlight that the best cultivation option for soil and climatic conditions in central Moldova is the characteristic for the interaction between the Telorman variety sown in the second decade of April at a distance of 70 cm between rows (1607 Mg·ha-1).