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Damien de Halleux and Laurent Gauthier

82 POSTER SESSION 12 Greenhouse Management/Cross-Commodity

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Mohamed Benmoussa and Laurent Gauthier

82 POSTER SESSION 12 Greenhouse Management/Cross-Commodity

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Driss Iraqi, Serge Gagnon, Sylvain Dubé and André Gosselin

82 POSTER SESSION 12 Greenhouse Management/Cross-Commodity

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Simon Chrétien, André Gosselin and Martine Dorais

In order to improve fruit quality under the Northern climatic growing conditions prevailing in Quebec, Canada (lat. 47°N, long. 71°W), a greenhouse tomato (Lycopersicon esculentum Mill. cv. Blitz) spring production experiment was conducted using several irrigation regime and electrical conductivity (EC) levels. The irrigation regime treatments were a function of the global solar radiation, with three thresholds applied to each EC treatment. The irrigation thresholds (KJ·m–2) were 1) 468, 2) 540, and 3) 612. Two EC treatments were used: 1) control EC (2.0 to 3.5 mS·cm–1) and 2) 30% higher EC than the control (2.6 to 4.6 mS·cm–1), which was raised by adding NaCl to 12 mmol·L–1. Plant water potential in summer and in the fall and plant growth after 6 months were not affected by irrigation or EC treatments. Raising the EC increased the Na content of reproductive and vegetative parts and decreased the N concentration of the vegetative parts. The highest EC improved fruit quality by reducing the incidence of fruit cracking. Although marketable yields were not affected by EC (P = 0.09) or irrigation regime (P = 0.08) treatments, higher EC during March to September increased (P ≤ 0.01) the proportion of Class 2 fruit by reducing fruit size.

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Xiaotao Ding, Yuping Jiang, Dafeng Hui, Lizhong He, Danfeng Huang, Jizhu Yu and Qiang Zhou

on greenhouse management, cucumber growth, and yield models. For example, to increase the efficiency of the crop production process, Boaventura and de Moura (2003) studied an optimal management practice of greenhouse environments related to capital

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Kristin L. Getter, Bridget K. Behe and Heidi Marie Wollaeger

the greenhouse pest management production practices, and description of the greenhouse eco-friendly production practices ( Table 1 ). The participant was then asked “How likely would you be to purchase this plant?” and asked to respond with a whole

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Kamal Aberkani, Xiuming Hao, Damien de Halleux, Martine Dorais, Stephen Vineberg and André Gosselin

grown under different salinity levels of the nutrient solution Acta Hort. 609 181 186 Luo, W. Stanghellini, C. Dail, J. Wang, X. de Zwart, H.F. Bu, C. 2005 Simulation of greenhouse management in the subtropics, Part II: Scenario study for the summer

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Gene A. Giacomelli

High tunnel crop production systems capitalize on the greenhouse effect and its subsequent microclimate modification. They are part of controlled environment agriculture (CEA) systems for crop production. They can provide daytime air and soil

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Elisa Solis-Toapanta, Paul Fisher and Celina Gómez

indoor gardening is also expected to affect plant growth and development. Therefore, solution management strategies should differ when plants are grown in a greenhouse following commercial practices, or in an indoor environment used for indoor gardening

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John D. Lea-Cox, Cindy Zhao, David S. Ross, Theodore E. Bilderback, J. Roger Harris, Susan D. Day, Chuanxue Hong, Thomas H. Yeager, Richard C. Beeson Jr, William L. Bauerle, Andrew G. Ristvey, Mary Lorscheider, Sarah Dickinson and John M. Ruter

not be familiar with the nursery and greenhouse industry or our specific water and nutrient management goals. We provide general information about the nursery and greenhouse industry in the southeastern United States, with statistics from the six