Cultivo de variedades de tagetes erecta linn na Chapada do Apodi (Ce), em diferentes densidades e época de plantio

• Ano de defesa: 2006
• Autor(a) principal: Duarte, Rosa Lúcia Rocha
• Tipo de documento: Tese
• Tipo de acesso: Acesso aberto
• Idioma: por
• Palavras-chave em Português: Tagetes; Produtividade; Flores
• Link de acesso: http://www.repositorio.ufc.br/handle/riufc/4799

The specie Tagetes erecta, commonly known as marigold, it is native of Mexico. The flowers are cultivated, picked and processed in an important one scale industrial as source of high color value, of the family of the carotenoids. The form of use of the marigold is as dehydrated petals and concentrated, that are used as addictive in the feeding for improvement of the skin pigmentation and eggs of poultry. An experiment field conditions was carried out from June to November 2003, in the Plated of Apodi, Limoeiro do Norte, Ceará, Brazil. The treatments consisted of three hybrid varieties and two varieties of open pollination, constituting the plots, in four planting densities (0,10m; 0.15; 0,20m and 0,25m) x 0,50m, constituted the split-plot and evaluated in six planting, with three repetitions. The variety V1 (hybrid F150011) it was on average the most productive, with 25,47 t /ha. In all of the planting period, the variety F1 50011 presented the largest number of flowers for hectare and the variedades V4 (A5893 P) and V5 (A0861P) presented the smallest number of flowers for hectare (0,48 million flowers /ha and 0,53 million flowers /ha, respectively). To cultivate V2 (F1 80447) he/she obtained the largest height, with average of 88,92cm. The variedade F1 50011 showed to smallest plant height, although the plant height doesn't have influences on the total weight of flowers This same variety also presented the largest diameter medium of flower (70,66mm). Concluded that as smaller the number of flowers, larger it individual weight, with larger consequent production of petals for flower. The variety F1 50011 presented the largest number of flowers /ha in all of the planting densities studied, where in the planting densities (200.000 and 133.333 plants/ha), were almost obtained 2,0 million flowers. It was verified that in the 5a. and 6a. planting (rainy period) the 20cm and 25cm spacing among plants, best for the variety F1 50011 (20,22 t /ha and 19,78 t /ha, respectively) and in the dry (1st, 2nd and 3rd) period, the largest productions of flowers, were obtained in the smaller densities (200.000 e 133.333 plants/ha).