ISSN: 1659-2751



Evaluation of Six Diversified Hydroponics’ Production Structures, in the Humid Tropics of Costa Rica


In this study a fifty square meter bamboo greenhouse was constructed, and six different structures were made out of materials such as galvanized iron, bamboo, PVC pipe, wood, and polyethylene bags. A drip irrigation system was installed in each one of the structures. Different vegetable crops were planted such as long coriander (Eryngium foetidum L.), cucumber (Cucumis sativus L.), radish (Raphanus sativus L.), coriander (Coriandrum sativum L.), lettuce (Lactuca sativa L.),chili (Capsicum annuum), and green beans (Phaseolus vulgaris), to which standard nutrient solution recommended for plants in the tropics was applied. The biomass weight of the aerial parts and the root was measured in each of the plant species using fourteen repetitions. The results were analyzed statistically using five numbers of Tukey’s test. The biomass of each one of the plant species with their respective variations and extreme values were obtained for comparison as potential useful information for subsequent studies. The production of plants per square meter of used space was calculated and compared with information reported by other authors. The least efficient structure was the radishes in flowerpots on the shelf. Radish raised in beds produced higher biomass. The greenhouse design was efficient to grow various vegetable crops using different kind of beds.

Key words: Vegetable crops, efficiency, space, structures, hydroponics, tropics.

Artículo en español (pdf) (7875)