BRÓCOLIS JAPONÊS SOB DIFERENTES ADUBAÇÕES

Abstract

The cultivation of broccoli (Brassica oleraceae var. Italica) has stood out in recent years, as a result of the growth in the consumption of healthy foods, and for its high profitability. The fertilization of this crop, as well as in other vegetables, is done mainly with chemical fertilizers, which in the long term tend to damage the soil. Thus, the objective was to evaluate the behavior of Japanese broccoli under different types of fertilizerd. The experiment was carried out at Fazenda Palmital, Faina - Goiás. The experimental design was completely randomized, in a 2x4 factorial scheme, two hybrids of Japanese broccoli (Veratto and BRO 68) and four types of fertilizer, aiming to provide 60 kg ha-1 of No to culture: urea (133 kg ha-1), bovine manure (2608.7 kg ha-1), poultry litter (2727.3 kg ha-1) and equine manure (4286 kg ha-1). The variables evaluated were the inflorescence diameter (cm), fresh inflorescence mass (g) and stem diameter (cm). Superior results were observed in the fresh mass of the inflorescence of the two hybrids when fertilized with avian litter. The poultry litter also provided good results in the inflorescence diameter variable, with urea fertilization being statistically equal. The stem diameter was also favored by organic fertilizers, and in the hybrid Veratto the poultry litter and cattle manure had similar results to urea, and in the hybrid BRO 68 the fertilization with poultry litter and horse manure obtained higher averages. The fertilizers evaluated have potential to replace chemical fertilization with urea to supply N to the plants.