Cultivo de Heliconia golden torch sob diferentes fontes e doses de silício

Abstract

Growing heliconias is an activity that has gained prominence in recent decades, as well as the use of silicate fertilizers that with the advancement of research, has increased its demand. The objective of this study was to test different sources and doses of silicate fertilizers in the cultivation of Heliconia Golden Torch to assess aspects of quality of production and post-harvest flowers. The experiment was arranged in randomized blocks with nine treatments and four replications, with three sources: ash from sugar cane bagasse, MB-4 and Rocksil® and three doses of SiO2: 0, 400 and 800 kg ha-1 of respective sources. The installation of the trial took place in the agricultural sector of the Federal Institute of Alagoas - Campus Satuba. The results showed that the number of inflorescences increased with the source Rocksil®, length of bracts was increased with interaction between ash and dose 400 kg ha-1, mass loss on the eighth day post-harvest was lower with the interaction between Rocksil® and dose 400 kg ha-1, burning of bract on the eighth day post-harvest was lowest with source Rocksil® at a dose 800 kg ha-1 and Si content in the soil to a depth of 0-0.20 m increased with increasing dose of silicon. As for the variables: length of flower stalks and, mass of flower stalks on the day of harvest and on the eighth day after harvest, content of silicon leaf and soil to a depth of 0.20-0.40 m there was no significant difference between treatments by grouping test of Scott-Knott medium. The silicon fertilization increased production and post-harvest quality, especially if the source Rocksil® at a dose 800 kg ha-1.