Doses of boron in sunflower growing development
Douglas Rafael Pedrini Marcondes, Suzana Pereira de Melo, Larissa Venucia Freitag Varjão Alves, Milton Ferreira de Moraes
Journal Title:Revista Agraria Academica / Agrarian Academic Journal
The objective of this study was to verify the influence of boron (B) doses on soil boron availability and sunflower characteristics in Tangará da Serra -MT. A randomized block design with four replicates, six doses of B (0; 0,5; 1,0; 1,5; 2,0 and 4,0 kg ha-1of B) was used, using boric acid. B content in soil, leaf B concentration, stem diameter, plant height, leaf diameter, mass of 1,000 achenes, shoot dry mass and yield were evaluated. All characteristics were influenced. The dose of 4 kg ha-1provided toxicity to plants with negative effects on shoot diameter and shoot dry mass.