Desenvolvimento inicial de mudas de carolina (Adenanthera pavonina L.) e moringa (Moringa oleifera Lam.) em resposta a adubação com pó de rocha e manipueira

Abstract

The seedling production stage becomes a fundamental process for crop formation, as it allows the producer to select plants with better performance and that are able to tolerate more adverse conditions in the field. Among the silvicultural treatments that seedlings need for their development, nutrition through fertilization is one of the main ones. The use of industrial inputs for the production of seedlings becomes an onerous practice, making most of the small Brazilian producers unfeasible. In this sense, it is possible to bring alternative forms of production, using technologies that are potentially viable and that contribute to the conservation of natural resources. The rocking technique is based on the addition of rock powder of varied types of rocks or minerals with the capacity to positively alter the fertility of the soils. Among the various organic residues used as a source of nutrients for plants in the nursery stage, the manipueira presents great potential because its composition is rich in micro and macronutrients. This work aims to evaluate the use of Ipirá rock powder and its association with manipueira as an alternative method to improve the substrate quality used for the production of carolina (Adenanthera pavonina L.) and moringa (Moringa oleifera Lam.). The association of the Ipirá rock powder with manipueira improved the chemical quality of the soil material used for the formation of substrates for the production of carolina and moringa seedlings, having a favorable effect on the seedling quality index of the two species. The presence of manipueira in the substrates increased the potassium content in the substrate and in the plant.