EFFECT OF CHEMICAL FERTILIZERS (N, P, K) IN THE GROWTH TWO SPECIES OF HENBANE AND TOTAL ALKALOIDS CONTENT

Abstract

A field experiment was carried out in the field of experiments of the Medical and Aromatic Plants Research Unit - college of Agriculture - University of Baghdad during the Season 2016 - 2017 to studying the effect of  chemical fertilizers in the growth of Egyptian and white henbane and the content of total alkaloids. The experiment was design within the Splint Plot Design. The experiment included two factors: the first two species are Egyptian and white henbane ( main plot) and the second factor include four levels of fertilizers are B1 without the addition ( Control ), B2 (N75, P50, K50), B3 (N100, P75, K75) and B4 (N150, P100, K100) within the Sup plot. The results showed no significant differences between the species of plant in all vegetative traits as well as the nutrients (N, P, K). The interaction treatments were significant differences between them, reached the highest leaf area, dry weight of the plant and leaves at Egyptian henbane with level of fertilizer B3 (85 ds² , 156 g , 43.98  g. plant^-1, plant and 1100 kg. h^-1 respectively). A significant difference was recorded in the percentage of P at the level of fertilizer B2 and B3 with white henbane plant for the same percentage (0.710%), while the K element recorded the highest percentage at the level of fertilizer B4 with white henbane (1.557%). The highest percentage of total alkaloids recorded at the level of fertilizer B4 fertilizer with the white and Egyptian henbane(21.53 and 13.1%) were compared with the control which given 8.12 and 10.31% for the two species respectively.