ResumoO milho é cultivado em todo o Brasil, tem grande importância econômica, devido às diversas formas de sua utilização, desde a alimentação humana e animal até a indústria de alta tecnologia e utilização na produção de biocombustíveis, sendo que a produtividade do milho na região nordestina é baixa em decorrência da predominância de sistemas de produção que utilizam pouca ou nenhuma tecnologia e apresentam insuficiência e irregularidade pluviométrica. Ante o exposto, o objetivo desta pesquisa foi avaliar os efeitos de diferentes lâminas de irrigação calculadas através de percentuais de evaporação do tanque classe "A" (20, 30, 40, 60, 80, 100, 120 e 140% da ECA), no crescimento da cultura do milho BRS catingueiro na região do cariri cearense. Avariável de crescimento, altura caulinar, foi influenciada pelas lâminas de irrigação utilizadas, apresentando maior valor com uma lâmina referente a 80% da ECA e as variáveis diâmetro caulinar e massa seca da parte aérea (caule e folhas) não foram influenciadas pelas lâminas de irrigação utilizadas.Palavras chave: Manejo de irrigação, tanque classe A, Zea maysL., lâminas de irrigação. Growth of corn BRS catingueiro irrigated in cariri Ceará AbstractCorn is grown throughout Brazil, has great economic importance due to various forms of use, from food and feed to the high-tech industry and use in biofuel production, and productivity of corn in Northeast It is low due to the predominance of production systems that use little or no technology and have insufficient rainfall and irregularity. Based on the foregoing, the aim of this study was to evaluate the effects of different irrigation levels calculated by evaporation percentage of tank class "A" (20, 30, 40, 60, 80, 100, 120 and 140% ECA) the growth of the corn BRS catingueiro in Ceará cariri region. The growth variable, stem height, was influenced by irrigation levels used, with higher value with a blade referring to 80% of the ECA and the variables stem diameter and dry mass of shoots (stems and leaves) were not affected by blades Irrigation used.
ResumoObjetivou-se, com este trabalho, avaliar o efeito de diferentes concentrações de sais e efluente tratado na água de irrigação durante o crescimento da alface crespa de (Lactuca sativa L. Growth of curly lettuce irrigated with treated wastewater and saline water at different concentrations in greenhouse AbstractThe objective of this study was to evaluate the effect of different concentrations of salts and treated effluent in irrigation water during the growth of curly lettuce (Lactuca sativa L). The experiment was conducted in a greenhouse of the Faculty of Technology FATEC Cariri belonging to the Institute Technological Education Center -CENTEC, using a completely randomized design with six treatments and five replications being: EH1 (100% water supply) , EH2 (80% + 20% saline water from the treated effluent), EH3 (50% + 50% of treated effluent water supply), EH4 (20% brine and 80% of treated effluent) EH5 (100 % of treated effluent) and EH6 (100% salt water). It was observed that there was no significant effect relating to the treated effluent concentrations and saline water in the leaves of many variables, growth rate relative and absolute. In relation to collection time was no significant effect on all variables; height, number of leaves, growth rate relative and absolute. If there is no interaction between the two factors. Treatment with 20% A.S.+ 80% A.R%; provided better performance in the studied variables and the treatment had lower performance was treatment with 100% water supply.
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