PRODUÇÃO DE MUDAS DE ALFACE (Lactuta sativa L.) EM SUBSTRATO COMPOSTO POR HÚMUS E RESÍDUOS DO BENEFICIAMENTO DOS GRÃOS DE PIMENTA-DO-REINO

One of the main stages of the production system of seedling production, as it affects the final and nutritional performance of plants. In this study, we aim to evaluate the effect of increasing levels of wastes from the black pepper bean drying process (“moinha pepper”) and decreasing levels of  humus on the quality of lettuce seedlings. The experiment was carried out in a randomized isolated design (DIC), with six sessions and ten repetitions, being: T0: 0% moinha pepper (MP) + 100% humus (H); T1: 10% MP + 90% H; T2: 20% MP + 80% H; T3: 30% MP + 70% H; T4: 40% MP and 60% H; T5: 50% of the MP and 50% of the H. At 40 days after the seminar, the following were evaluated: plant height, stem diameter, dry root weight, dry shoot weight, dry shoot weight, total matter mass drought and Dickson's quality index. The moinha pepper has a high potential for use as a substrate component for the production of lettuce seedlings. It is recommended to use the alternative substrate containing 20% ​​ moinha pepper and 80% humus in the production of lettuce seedlings.