The influence of nitrogen and phosphorus fertilization on production of biomass and mucilage in Cissus sicyoides plants was evaluated. 45-day old plants obtained from cuttings were planted in pots with capacity for 5 Kg of soil, having as substrate allic cambisol soil, medium texture from Nazareno (Brazil). Basic fertilization with macro and micronutrients was done. Nitrogen doses (0; 40; 80; 160 and 200 mg of N/Kg of soil) and phosphorus doses (50 and 150 mg of P/Kg of soil) were evaluated. The experiment was laid out in a complete randomised factorial scheme of 5 x 2, with four replications. The research was carried out in a greenhouse during 90 days, being evaluated the dry matter of leaves, stalks and roots; chemicals characteristics and mucilage were determined. Between nitrogen and phosphorus doses and the production of dry matter of leaves was observed interaction. Higher biomass gain occurred with higher nitrogen dose of 150 mg P/Kg of soil. The mucilage production increased with increasing doses of nitrogen and phosphorus, reaching a higher content at the same conditions that gave a higher leaves biomass gain and total aerial part.
Cissus sicyoides; Vitaceae; medicinal plant; chemical fertilization; acids polysaccharides
