Desempenho produtivo de couve-flor submetida a diferentes manejos de irrigação e doses de boro em ambiente protegido

Abstract

With the purpose of providing technical information on the production of irrigated cauliflower in a greenhouse in northeast Pará, a project was implemented in the experimental farm of UFRA, in Igarapé-Açu Town, with the hybrid Desert cultivar, which has some adaptability to the region’s weather. The design used was composed of randomized blocks in a 4 x 3 factorial scheme, with 12 treatments and 3 replicates. Treatments consisted of four soil water yields (15, 30, 45 e 60 kPa), indicative of when to irrigate, and three doses of boron (0, 3 e 6 kg ha-1) applied via leaf. The irrigation method used was drip irrigation and the irrigation management was via tensiometry. The experimental plots had 3.6 m2 consisting of 8 plants, with an 0.8 m spacing between rows and 0.5 m spacing between plants. Four plants were evaluated in each plot, totaling 288 plants. According to the data obtained, the hybrid cultivar Desert was promising for cultivation in the edaphoclimatic conditions of the northeastern region of Pará. The yield with the best results was 37 kPa, with yielding head yield of 11.3 t ha-1, 450 g fresh mass, 31.48 g dry mass, 15.6 cm diameter, 50.99 cm circumference and 9.87 cm height. The boron doses showed no significant difference