Avaliação do desempenho de couve-flor de verão para o cultivo no município de Manaus – Amazonas

Abstract

Cauliflower (Brassica oleracea var. botrytis) is a vegetable planted in various parts of the world. However, temperature is the primary climatic factor affecting its production. With the use of techniques of plant breeding, many varieties of this species have been developed for growing in warmer environments, allowing production throughout the year. The aim of this study was to evaluate the performance of cultivars of cauliflower summer conditions of the city of Manaus - Amazonas. The experimental design was a randomized block design with four treatments (cultivars and hybrids of cauliflower) with four replications. The following characteristics of plants were evaluated: stem diameter (DC), plant height (PH), number of leaves (NL), stem mass (CM), fresh weight of inflorescence (MFI), diameter of inflorescence (DI) , cyclo (CL), productivity (P). The heads of cauliflower were classified according to the program Horti & Frutti Standard. The experimental data were subjected to analysis of variance by F test and the averages compared by Skott-Knott at 5% probability. The cultivar Early Piracicaba and hybrids 284 Verona, Venice and Verona CMS adapted to the ecological conditions of the region. From the point of view of health, registered the occurrence of a disease called "soft rot", caused by the soil bacterium Pectobacterium spp. Cauliflowers were classified based on the Program & Horti Frutti pattern in Classes 4,2,1, category 1 and 2 tone cream. Among the varieties and hybrids tested, the variety Early Piracicaba showed the highest averages in the diameter of inflorescence (15.93 cm), fresh weight of inflorescence (0.32 kg) and productivity (6.4 t ha-1), therefore can be recommended for immediate cultivation by farmers in the region.