Organic substrates for neem seedlings production

The use of organic substrates of own formulation for seedlings production can be a viable alternative for producers by reducing costs and facilitating access. The aim of this study was to evaluate the early development of neem seedlings (Azadirachta indica) in different organic substrates. The experiment was performed in a completely randomized design, in a 4x5 factorial, with factors consisted of four organic sources (decomposed stem of the moriche palm [paú de buriti], earthworm humus, goat and poultry manure) in five proportions (0, 25, 50, 75 and 100% of source mixed with soil) with ten replications. At 30 days after the emergence, plant height; number of sheets; leaf area; dry mass of shoots; and length, volume and root dry matter were evaluated. The early development of the seedlings was better on the substrates with decomposed stem of the moriche palm [paú de buriti] and poultry manure, especially in the proportions of 50 and 75% of mixed source with soil, promoting better vegetative growth.