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The aim of the study was to evaluate the agronomic and economic characteristics of broccoli following the application of boron (B) doses in the transplanting furrow with or without the application of poultry litter. The research was carried out in a Dystrophic RedYellow Latosol (Oxisol) from April to July 2015. The experimental design was randomized blocks in a 2 x 5 factorial arrangement, where the first factor was fertilization without or with poultry litter (0 and 10 t ha) and the second factor was the B dose (0, 2, 4, 6 and 8 kg ha), with three replicates. The broccoli cultivar used was the Avenger hybrid. The analyzed variables were B content in the inflorescence, leaves, and stem; total B content of the shoot; fresh and dry mass of the inflorescence, leaves and stem; inflorescence diameter; total and commercial yields; incidence of hollow stem; and economic aspects of fertilization. The poultry litter, on the average of all doses, increased the foliar B levels and the fresh mass of the broccoli inflorescences and leaves, providing a greater yield and gross revenue. The B levels in the inflorescences and leaves increased with the B dose regardless of fertilization with poultry litter but only increased in the absence of the organic fertilizer in the stems. The profitability index increased with the B dose up to 8 kg ha in both the presence and absence of fertilization with poultry litter, but the more appropriate to farmers was the B dose of 8 kg ha and 10 t ha of poultry litter.

Agronomic and economic efficiency of fertilization of broccoli (Brassica oleracea var. Avenger) with boron (B) and poultry litter