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

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.

Qualidade Fisiológica De Genótipos De Tomate Fertilizados Com Lodo De Esgoto

“…Entretanto, a eficiência deste substrato em germinação e emergência já foi relatada para outras espécies como: feijão (LOBO et al, 2012); mamoneira (NASCIMENTO et al, 2011). E no presente estudo, a incorporação de areia objetivou melhorar a estrutura do biossólido como substrato, alterando suas características físicas, como em outros estudos, a utilização de condicionadores obtidos de resíduos orgânicos e para propiciar a boa formação de mudas, como: alface (LOPES et al, 2005); brócolis (LOPES et al, 2012); cupuaçu (ARAÚJO NETO et al, 2015); maracujá (FREITAS et al, 2015).…”

Substrato Enriquecido Com Casca De Pequi Melhora a Qualidade De Mudas De Brócolos E Couve-Flor

“…Na escolha de um substrato para produção de mudas, deve-se observar, principalmente, as características físicas, químicas, biológicas e sanitárias, para promover eficiência na germinação e emergência de plantas. Ainda cabe ressaltar que o substrato deve fornecer nutrientes e oxigênio, ter baixo custo de aquisição ou disponibilidade de material para produção (Steffen et al, 2010;Lopes et al, 2012;Mesquita et al, 2012).…”

Contribution of the carbonized rice husk added to the substrate in the production of vegetable seedlings

“…Carbonized rice husk has been physically and chemically characterized in combinations with other components added to the commercial substrate and has been found to provide greater porosity to the final substrate, improving the quality of lettuce seedlings (Castoldi et al 2014;Simões et al 2015;Watthier et al 2017), broccoli (Lopes et al 2012), and mustard (Souza et al 2017).…”