19 Jul 2017
Yield, quality and profitability of sensor‑controlled irrigation: a case study of snapdragon (Antirrhinum majus L.) production
Saavoss, M., Belayneh, B., Lea‑Cox, J., Lichtenberg, E. (University of Maryland), Majsztrik, J. (Clemson University)
On-farm research has found a number of advantages of sensor-based irrigation compared to current irrigation practices including reduced water application, disease incidence, production time and labor, and increased profitability. We examined the effects of sensor-based irrigation in a commercial greenhouse producing cut-flower snapdragons. We calculated changes in yield, production time, quality, cost, revenue and profit, using 3 years of data before and after implementation of sensor irrigation networks. Sensor-based irrigation increased revenue by 62% and profit by 65% per year. Sensor-based irrigation was also associated with increases in the quality and the number of stems harvested per crop.
See the article in the link bellow
25 May 2017
Diffusing Water Conservation and Treatment Technologies to Nursery and Greenhouse Growers
Lamm, A.J., Warner, L.A., Taylor, M.R., Martin, E.T., Fisher, P. (University of Florida), White, S. (Clemson University)
In-depth interviews were conducted with 24 operators across the U.S. to identify their perceptions of new water-saving technologies and treatments. The findings revealed growers are aware of water-saving technologies and the rate of adoption depends on a variety of factors including: perceived cost, lack of ability of their workforce to use the new technology due to its complexity, and belief that their product will be worth more if it is grown in an environmentally-friendly manner. Barriers to adoption included the high cost of replacing equipment, incompatibility with existing systems, and the perception that new technologies do not fit in with the traditional hands-on approach to horticulture. We need to develop materials that highlight the economic benefit of adoption and cost recovery, YouTube videos that reduce issues with perceived complexity should also be developed for growers so they can use them with their workers.
Journal of International Agriculture and Extension Education April 2017 (639 KB)
22 Mar 2017
Water Use and Treatment in Container-Grown Specialty Crop Production: A Review
Majsztrik, J.C., White, S.A., Hitchcock, D.R., (Clemson University), Fernandez, T.R. (Michigan State University, Fisher P.R. (University of Florida), Lea-Cox, J. (University of Maryland), Owen, J.S.Jr. (Virginia Polytechnic Institute and State University) , Oki, L.R. (University of California Davis)
Water quality and water quantity are major concerns for growers around the world. There are number of factors that can impact irrigation water for plant production including policy, changing weather patterns, aquifer depletion, and saltwater intrusion. This article discusses a number of aspects of water use, capture, remediation, and reuse for specialty crop production. Various techniques and equipment for the removal of sediment, pathogens, agrichemicals and other contaminants are discussed. Remediation technologies reviewed include filtration (for example: rapid sand, slow sand, membranes, and filter socks), activated carbon, disinfection (chlorine, ozonation, UV), and biological control (constructed wetlands, vegetated buffers, bioreactors).
See the article in the link bellow.