The effect of the preparation "Agricultural Happy NL-1 ", which contâins elementsfrom scandium and lanthanid groups on some morphological and physiological characters ofyoung sunflower plants was studied. Different concentrations of the prepârâtion and treatmentswere used. The presence of the elements from scandium and lanthanid groups in the nutritive solution considerably affected the growth and development of sunflower plants. The lower concentrations of these elements, at the stages of two pairs of leaves, increased the length and mass of stem, the area of cotyledons, thc length, volume and mass of roots and chloroplast pigménts content in leaves. Tlre higbest studied conccntracion (100pg'g-1) increased tlre mass and specific mass of leaves. At the stage of four pairs of leaves, all parametrs had highest values with the concentration of 504 u'g-1 of the preparation in the nutritive solution. 1'tre pre-sowing treatment of seeds with low conccntrations of the pr€pâration (2000 or 3000 u g'g-1, for plant growth in soil culture, increased the following parameters: the height and mass of stem, the mass and area of leaves, chloroplast pigment content in leaves and root mass. Secd treatment with the highest concentration (5000 u g'g-1) was inhibitory. The obtained results showed that certain concentrations ofthe elcmcnts from scandium and lanthanid groups may affect favorably the growth ofyoung sunflower plants, although thcse