Giacomelli, G. A. (2011). HortiFair Special with focus on greenhouse water use efficiency. Groenten & Fruit Magazine.
Presented at Amsterdam, the Netherlands, 11/21/2011.
Tignor, M. E., Wilson, S. B., Giacomelli, G. A., Kubota, C., Fitz-Rodriguez, E., Irani, T. A., Rhoades, E. B., & McMahon, M. J. (2007). Multi-institutional cooperation to develop digital media for interactive greenhouse education. HortTechnology, 17(3), 397-399.
Giacomelli, G. A., & Krass, A. E. (1985). GREENHOUSE FOG EVAPORATIVE COOLING USING A MOVABLE BOOM.. Paper - American Society of Agricultural Engineers.
Abstract:
An evaporative cooling system was designed and evaluated. The system utilized high pressure fog nozzles mounted on a movable frame which travelled the width of a greenhouse bay. The system effectiveness (measured as absolute cooling and spatial temperature uniformity) as influenced by the spraying rate, the rate of frame movement and the greenhouse volume air change rate was determined. Effectiveness values ranged from 50 to 70% with instantaneous temperature reductions as large as 9 degree C.
Giniger, M. S., Stine, C. B., Giacomelli, G. A., & Mears, D. R. (1985). MICROCOMPUTER CONTROL OF GREENHOUSES. I. DEVELOPING CONTROL STRATEGIES FOR A LARGE THERMAL MASS.. Paper - American Society of Agricultural Engineers.
Abstract:
Work is underway to maximize the use of a warm floor heating system as the primary greenhouse heating source. To date, simple thermostats control the floor temperature which can lead to an undesirable climate for plant growth. Because of the large thermal inertia of the system, temperature changes of the floor for a given heat input are relatively slow. Initial research has yielded equations which describe the temperature response of the floor to constant heat inputs. These equations incorporated into existing computer software offer improved overall greenhouse temperature control. Results from simulation studies and measured data indicate that classical control strategies will be effective in maintaining optimum climates for plant growth.
Pagliarulo, C. L., Hayden, A. L., & Giacomelli, G. A. (2004). Potential for greenhouse aeroponic cultivation of urtica dioica. Acta Horticulturae, 659, 61-66.
Abstract:
Resent studies investigating aeroponic cultivation of medicinal plants have provided encouraging results for increasing yields, shortening time to maturity, and improving consistency and overall quality of produce over field production. The goal of the current study was to determine the applicability of aeroponic technology for the cultivation of the traditionally field grown herbaceous medicinal plant Urtica dioica. In addition, we investigated if control of nutrient delivery and repeated harvesting practices could be utilized to increase and direct yield of desired plant parts. Comparison of root and shoot dry weights between treatments revealed; (1) U. dioica cultivated in soil-less medium yielded equal shoot biomass and greater root biomass than aeroponically cultivated plants, (2) potassium and phosphorus ratios within the nutrient solution had no significant impact on yield or biomass allocation, and (3) multiple harvesting of aeroponic roots and shoots yielded greater total biomass of both roots and shoots than a multi-crop replanting strategy. Results suggest aeroponic technology could be a powerful tool for the cultivation U. dioica as well as a variety of other important herbaceous medicinal plants. However, further optimization of the plant growing environment is required to maximize and direct growth.
