Manejo da irrigação durante o estádio de maturação dos frutos do tomateiro para processamento industrial

• Ano de defesa: 2010
• Autor(a) principal: Lopes, Breno Pereira
• Orientador(a): Mantovani, Everardo Chartuni
• Banca de defesa: Vidigal, Sanzio Mollica , Ramos, Márcio Mota , Oliveira, Rubens Alves de
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Viçosa
• Programa de Pós-Graduação: Mestrado em Engenharia Agrícola
• Departamento: Construções rurais e ambiência; Energia na agricultura; Mecanização agrícola; Processamento de produ
• País: BR
• Palavras-chave em Português: Tomate; Industrial; Irrigação
• Palavras-chave em Inglês: Tomato; Industrial; Irrigation
• Área do conhecimento CNPq: CNPQ::CIENCIAS AGRARIAS::ENGENHARIA AGRICOLA::ENGENHARIA DE AGUA E SOLO
• Link de acesso: http://locus.ufv.br/handle/123456789/3588

This study aimed to evaluate the effect of different irrigation water depths applied during the maturation stage of tomato and promote a study of the watering suspension at different stages of crop development. This experiment had two experimental areas, the first one was irrigated by center pivot and it was installed in the city of Cristalina, Goiás State, and the second one was drip irrigated and it was installed in the city of Goiânia, Goiás State. In the experiment of Goiânia, it was used three hybrids, ASTERIX, AP 533 and ISI 29616, and in Cristalina it was used only one, UG 8169. Treatments for both experiments were the same, with four irrigation water depths (L1, L2, L3 and L4 corresponding to 25, 50, 75% and 100% of the net irrigation depth (NID) respectively) and three irrigation suspensions (S1, S2 and S3, when 20% of plants contained at least one ripe fruit, 10% of fruits fully ripe and 95% of fully ripe fruit, respectively). The variables were: production of ripe fruit, rotting fruit, unripe fruits, soluble solids content (Brix), weight of 100 fruits, fruit number per plot and yield of tomato pulp. The temperatures of the experimental areas during the experiments were ideal for growing tomatoes. In the experimental area of Goiânia, rainfalls (63 mm) occurred at the final stage of the tomato, 11 days preceding the harvest of the experiment, which probably minimized the effects of the treatments, and at the experimental area of Cristalina, rainfalls (320 mm) occurred at the beginning of the experiment, which benefited diseases, especially bacterial infections. For the experimental area of Cristalina, the irrigation of 84.5% of NID provided the greatest yield, 98.54 tons per hectare. The irrigation suspension 5 days before harvest resulted in the highest fruit yield and the lowest values of soluble solids. In the experimental area of Goiânia, the treatments of different irrigation water depths provided differences in fruit yield and pulp yield only for hybrid ISI 29616, and the highest fruit yield and pulp yield were measured in water depths of 89.3 and 100.0% of the NID, respectively. Regarding the irrigation suspension, the Brix was the variable that had statistical differences for the three hybrids. S1 and S2 did not differ among themselves and had the highest Brix values for the three hybrids.