Abstract
The cultivation of gerberas as cut flowers has been broadly studied. With the purpose of assess the production and visual quality of potted gerberas conducted with different fertilizations, the experiment was performed in a greenhouse located at UNIOESTE – Campus of Cascavel – Parana - Brazil. The experimental design was done in randomized blocks with four repetitions and five treatments. The treatments were defined based on the fertilization source: mineral (NPK) or organic. The organic fertilizations were obtained with the dilution of four organic composts derived from the composting process of agro-industrial wastes in water. The agro-industrial waste, used in different percentages in each treatment, were: grains pre-cleaning residues (corn meal and wheat husk); hatchery waste; flotation sludge; cellulose casing (sausage covering); solid fraction of pig slurry (Piglet Producer Unit) and truck washing; coal and ash remaining from boiler; poultry litter and sugarcane bagasse. The growth parameters were evaluated at the commercialization phase (plant height and diameter, stem height, capitulum number, and capitulum and stem diameter) and sensory analysis through trait and preference assessment tests. The use of liquid organic fertilizers are a feasible alternative to substitute conventional mineral fertilization. Farmers should observe EC values and K, Ca, Mg ratio for better quality assurance according to the results obtained in T5 . The T5 (Boiler remaining ash + Hatchery residue) has a larger amount of boiler remaining ash, whereas the chemical elements in mineral form are already readily available to the plants, this fact may have contributed to better visual development of plants grown in this treatment.
Highlights
Gerbera (Gerbera jamesonii) is an herbaceous plant, belonging to the Asteraceae family (CARDOSO and SILVA, 2013)
Based on the considerations above, the current study had the purpose of evaluating the usage efficiency of liquid organic fertilizer derived from the dilution of organic composts obtained through the composting of agroindustrial wastes, regarding growth parameters and visual parameters for potted gerbera
Gerberas cultivated with liquid organic fertilizer (LOF) present similar development to those cultivated with mineral fertilization when parameters of growth and development of the aerial part in the commercialization phase were evaluated
Summary
Gerbera (Gerbera jamesonii) is an herbaceous plant, belonging to the Asteraceae family (CARDOSO and SILVA, 2013). Gerbera stands out due to inflorescence characteristics, such as shape diversity, color range and size, which can vary according to the culture (DAMASCENO et al, 2010; LONGCHAR and KEDITSU, 2013). Another advantage is related with its short growing cycle (10-12 weeks) (BALL, 2014). Even though the sensory analysis is the ideal instrument to verify the potential consumer behavior in relation to the product, there are few researches that used this tool to evaluate ornamental plants. Based on the considerations above, the current study had the purpose of evaluating the usage efficiency of liquid organic fertilizer derived from the dilution of organic composts obtained through the composting of agroindustrial wastes, regarding growth parameters and visual parameters for potted gerbera
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