10 Oct 2017
2017 California Nursery Conference: Part Two
Jim Owen (Virginia Tech), John D. Lea-Cox (University of Maryland), Tom Fernandez (Michigan State University), Bruno Pitton and Lorence Oki (University of California), John Majsztrik (Clemson University)
This conference, held on July 27, 2017 in Irvine, CA, focused on Water Management in Nursery and Greenhouse Production. The Clean WateR3 team presented their research studies. This second part (of three) covers economic costs of water conservation, how to control pH and salts, as well as tools and models for water management. The topics covered are:
2-1SSaveCostsRefiningSubstrateNutrientProgram (3372 KB) 2-2IrrigationManagementUsingSoilMoistureSensors (2805 KB) 2-3Wheredonutrientsgowhenyouirrigate (2760 KB) 2-4NitrogenManagementPlans (631 KB) 2-5Addingtoolsintoyourwatermanagementtoolbox (447 KB)
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 Apr 2017
A New Way to Measure Electrical Conductivity
John Lea-Cox (University of Maryland)
Electrical conductivity is vital to maintain adequate plant nutrition. Learn how to measure EC in subtrates with real-time output. Some imporant considerations are the sensor placement, and understanding the difference between bulk EC vs. pore water EC. See the article in the link bellow for an easy and cost-effective method for measuring EC.