Broccoli production depending on the seed production system and organic and mineral fertilizer

  • Lopes J
  • Mauri J
  • Ferreira A
  • et al.
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Abstract

The experiment was conducted in a greenhouse at the Universidade Federal do Espirito Santo, in Alegre, Espirito Santo state, Brazil, to evaluate the broccoli production depending on the seed production system and organic and mineral fertilization. Seeds of the broccoli cultivar Ramoso Piracicaba were originated from lots of seed obtained in an organic and conventional production system. The experimental design was of randomized blocks, with four replications in a factorial arrangement combination of the lots, 2x5 (organic and mineral fertilized seeds) and substrates [S1 (soil + sand + manure), S2 (soil + sand + manure + NPK), S3 (soil + sand + manure + Fertium® 10 g L-1), S4 (soil + sand + manure + Fertium® 30 g L-1) and S5 (soil + sand + manure + Fertium® 50 g L-1]. The analyzed variables were emergency, fresh and dry mass of aerial part, emergency speed and height of seedlings after 28 days of sowing, and plant diameter, leaf area, number of leaves, fresh and dry mass of aerial part, plant height, root volume, fresh and dry root mass, absolute and relative growth rates and increment to leaf area and plant height after 104 days. The emergency was similar in the different substrates; great vigor occurred on conventional seeds; the mineral fertilization increased the production of fresh mass of aerial part; the use of substrate containing soil, sand soil conditioner Fertium (30 to 50 g L-1) increased the volume, fresh and dry mass of roots and rate of increase in these variables.O experimento foi conduzido em casa de vegetação na UFES-CCA, em Alegre-ES, objetivando avaliar a produção de brócolos em função do sistema de produção da semente e do tipo de substrato. Utilizaram-se sementes de brócolos da cultivar Ramoso Piracicaba. O delineamento foi em blocos ao acaso, com quatro repetições, em arranjo fatorial 2x5, compreendendo lotes (sementes de cultivo orgânico e convencional) e substratos [S1 (solo + areia + esterco); S2 (solo + areia + esterco + NPK); S3 (solo + areia + esterco + Fertium® 10 g L-1); S4 (solo + areia + esterco + Fertium® 30 g L-1) e S5 (solo + areia + esterco + Fertium® 50 g L-1)]. Foram avaliados a emergência, massa fresca e seca da parte aérea, IVE e altura de plântulas após 28 dias da semeadura; e diâmetro do colo, área foliar, número de folhas, massa fresca e seca da parte aérea, altura das plantas, volume de raiz, massa fresca e seca da raiz, taxas de crescimento absoluto e relativo e incremento para área foliar e altura das plantas após 104 dias. A emergência foi similar nos diferentes substratos. As sementes de sistemas convencionais apresentaram maior vigor; a adubação mineral aumentou a produção de massa fresca da parte aérea; a utilização de substrato contendo solo, areia, esterco e o condicionador de solo Fertium (30 a 50 g L-1) aumentou o volume, massa fresca e seca da raiz das plantas e a taxa de incremento nestas variáveis.

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APA

Lopes, J. C., Mauri, J., Ferreira, A., Alexandre, R. S., & Freitas, A. R. de. (2012). Broccoli production depending on the seed production system and organic and mineral fertilizer. Horticultura Brasileira, 30(1), 143–150. https://doi.org/10.1590/s0102-05362012000100024

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