RESEARCH ON THE INFLUENCE OF SOME ELEMENTS OF TECHNOLOGY ON SOME MORFOPRODUCTIVE INDICATORS OF SAINFOIN (Onobrychis viciifolia Scop.) IN SEED CROPS, IN THE FIRST YEAR OF VEGETATION

Abstract

The research conducted during the period of March to October 2019, at the Research and Development Station forMeadows, Vaslui (46°40'-36°10' north latitude and 27°44'-20°40' east longitude) followed the influence of fertilization and the distance between rows on the plants height (cm), shoots number (shoots·m^-2), inflorescences number (inflorescences·m^-2), and seeds production (kg·ha^-1) at sainfoin (OnobrychisviciifoliaScop.) VLAMAR variety, in the first year of vegetation.The organized experience was bifactorial, 3x5 type, placed according to the method of subdivided plots, with the plot harvestable area of 13.5 m² (1.5 m x 9 m), in three replications, and the factors studied were: A - the distance between rows with three graduations (a₁ - 25 cm, a₂ - 37.5 cm and a₃ - 50 cm) and B - fertilization with five graduations (b₁ - unfertilized, b₂ - N₅₀P₅₀, b₃ - N₅₀P₅₀K₅₀, b₄ - N₁₀₀P₁₀₀K₁₀₀ and b₅ - cow manure 20 Mg·ha^-1). Following the study, it was found that by applying mineral or organic fertilizers and by sowing at smaller distances between rows higher plants were obtained, with a higher number of shoots·m².The seed production varied between 91.2 kg·ha^-1 for the variant sown at a distance of 50 cm between rows, unfertilized and 324.1 kg·ha^-1 for the variant sown at a distance of 25 cm between rows, fertilized with N₁₀₀P₁₀₀K₁₀₀.