Produtividade de rabanete cultivado em substrato orgânico.

Abstract

Radish (Raphanus sativus L.) is a short-cycle tuberous vegetable, which reserves a significant amount of nutrients from the soil. It has great nutritional requirements, deficits or excesses, which lead to losses in its physiology, which can hardly be reversed. Research involving the proper management of fertilization in radishes, aiming to achieve good productivity with low impact on the environment, are important for increasing productivity and crop quality. Thus, based on what has been exposed, the objective of this research was to evaluate the performance of the radish culture regarding its productivity on organic poultry substrate. The experimental design was completely randomized with five treatments containing soil and organic matter in the substrate, as follows: T1 – Soil only; T2 – Soil + 10%; T3 – Soil +15%; T4 – Soil + 20% and T5 – Soil + 25% of poultry manure, respectively, resulting in 20 experimental plots and 120 pots. The number of leaves, fresh shoot mass (g), tuber weight (g), dry shoot phytomass (g) plus root dry biomass (g) and the occurrence of pests were evaluated. The performance showed linear growth as the percentages of poultry manure increased, however, this is not significant, due to the fact that there will be a point where the addition of manure will no longer result in increased productivity. Regarding the occurrence of pests, the species did not present occurrences that justified the use of pesticides.