Performance of pine cone seedlings in different doses of phosphate fertilizing

Adding phosphorus in the composition of substrate for seedlings production contributes to a faster growth seedlings, increases resistance biotic and abiotic stresses, also improves efficiency use nutrients water many vegetal species. The objective this research was evaluate vegetative quality Annona squamosa L. propagated by seeds, regarding application single superphosphate enriched sugarcane bagasse substrate. completely randomized design consisted six treatments arranged according following doses (0; 0.75; 1.5; 2.25; 3.0 3.75 kg), using substrate, with four replicates per treatment. At 120 days after sowing, number leaves, leaf area, shoot height, stem diameter, dry mass, root total ratio between mass chlorophyll a, b, chlorophyll, Dickson’s Quality Index were evaluated. maximum pine cone plants noted when added ranging from 0.6 1.2 kg.m-3. phosphate fertilizer favored especially roots area improved seedlings.