Desempenho agronômico da melancia por semeadura direta e transplantio de mudas

• Autor(a) principal: Pereira, Débora Regina Marques
• Data de Publicação: 2017
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da UFG
• dARK ID: ark:/38995/00130000021qr
• Texto Completo: http://repositorio.bc.ufg.br/tede/handle/tede/7195
• topic: Ciclo; Citrullus lanatus; Cultivo; Manchester; Talisman; Cycle; Citrullus lanatus; Cultivation; Manchester; Talisman; CIENCIAS AGRARIAS::AGRONOMIA

The watermelon [Citrullus lanatus (Thunb.) Matsum. & Nakai] is traditionally grown by direct sowing, however, due to the high value of the seeds of improved materials, the production of seedlings appears as an interesting alternative. In order to evaluate the agronomic performance of the watermelon by direct sowing and transplanting of seedlings, two experiments were conducted under field conditions in the Horticulture Sector of the Agronomy School of the Federal University of Goiás, Goiânia, Goiás. (DBC) with four replications in a 2 x 4 factorial scheme (two hybrids: Manchester and Talisman and four types of crops: no-tillage, seedlings with (15, 20 and 25 days).) In the second experiment The treatments were composed of three stages of no-tillage and three ages of seedlings (15, 20 and 25 days). When the F test (5%) was significant for Age variation, regression analysis was performed, and when Tukey test (5%) was applied. The comparison of the planting method (direct sowing versus seedling age) was performed through orthogonal contrasts. The number of leaves (NF), height and dry mass (DM) per seedlings were evaluated. The length of the branches was evaluated at 34, 55 and 75 days after transplanting (DAT), and the incidence of diseases was monitored. In the second experiment, the beginning of flowering was also evaluated, and in both experiments the average cycle of each treatment was determined. In the harvesting phase, fruit length and width, mass, white part thickness and soluble solids content were evaluated. Seedlings with greater age (25 days) presented superiority in relation to number of leaves and dry mass on the day of transplanting. Variables indicating productivity (mass) and fruit quality (soluble solids content, white thickness, fruit length and width) were not influenced by the treatments. There was no significant difference for viral and fusariosis infections. The treatment of direct seeding presented plants with an earlier cycle in both the 2015 and 2016 crops, followed by seedlings with 15 days. The cultivation of watermelon by direct seeding shows less cycle, but did not influence the characteristics as in the indicative of production and quality of the fruits.