Abstract
The flower market is on the rise in Brazil. Among the most requested species stands out the ornamental sunflower.However, there are few studies related to the use of organic waste in its production.The objective evaluate the development and biomass production of ornamental sunflower Dwarf Garden under use ofcattle manure. The study was conducted from June to August 2014 in the greenhouse environment. The experimental design was completely randomized with five doses of cattle manure (0; 2.5; 5.0; 7.5 and 10.0 %) of the substrate volume, with five replications and five plants per plot. At 70 days after sowing, period in which the flower was at the R9 stage (physiological maturity), the harvest has begun. It was evaluated the root length, number of petals, green and dry phytomass of root, green and driesphytomass of petals, green and dry phytomasschapter with and without petals, days from the sowing to the appearance of the first floral bud and for initial opening and full of the floral bud. The cattle manure stimulates the production of petals, green and dry phytomass production and increases the precocity of the Sunflower Dwarf Garden. The organic fertilization with cattle manure is an efficient alternative for the production of ornamental sunflower.
 
 
 DESENVOLVIMENTO E PRODUÇÃO DE GIRASSOL ORNAMENTAL EM FUNÇÃO DO USO DE ESTERCO BOVINO
 
 O mercado de flores está em plena ascensão no Brasil.Dentre as espécies mais requeridas, destaca-se o girassol ornamental. Porém, são poucos os estudos relacionados ao uso de resíduo orgânico na em sua produção.Assim, objetivou-se avaliar o desenvolvimento e produção de fitomassa do Girassol ornamental Anão de Jardim sob uso deesterco bovino. O trabalho foi desenvolvido de junho a agosto de 2014 em casa de vegetação. Avaliaram-se cinco doses de esterco bovino (0, 2,5, 5,0, 7,5 e 10,0 %) do volume do substrato, utilizando-se o delineamento experimental utilizado foi inteiramente casualizado, com cinco repetições e cinco plantas por parcela. Aos 70 dias após a semeadura, período em que a flor estava no estágio R9 (maturação fisiológica), iniciou-se a colheita. Avaliaram-seas características de crescimento e produção da planta e pétalas. O esterco bovino estimula a produção de pétalas, a produção de massa verde e seca e aumenta a precocidade do Girassol Anão de Jardim. 
 
 PALAVRAS-CHAVE: Helianthusannuus L.; Flores ornamentais; Resíduo orgânico.
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