Desempenho agronômico da melancia por semeadura direta e transplantio de mudas
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Data
2017-03-22
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Universidade Federal de Goiás
Resumo
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.
Descrição
Palavras-chave
Ciclo , Citrullus lanatus , Cultivo , Manchester , Talisman , Cycle , Citrullus lanatus , Cultivation , Manchester , Talisman
Citação
PEREIRA, D. R. M. Desempenho agronômico da melancia por semeadura direta e transplantio de mudas. 2017. 65 f. Dissertação (Mestrado em Agronomia) - Universidade Federal de Goiás, Goiânia, 2017.