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)
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.
1 Jun 2016
Nutrient Remediation using Two Plant Species in a Floating Treatment Wetland System
Garcia, L.M., Majsztrik, J.C., Bell, N.L., White, S.A. (Clemson University)
Excess nutrients are often present in production runoff from nurseries and greenhouses because fertilizers are used to grow plants. In 2015, we conducted trials with floating treatment wetlands (FTWs) to determine how much nutrients soft rush (Juncus effusus) and pickerelweed (Pontederia cordata) could absorb. When harvested after 20 weeks, with pond nutrient concentrations averaging 10 ppm N and 3 ppm P, a 1-acre are of planted FTWs would remove 88 lbs. of N and 15 lbs. of P if planted with soft rush or 1,320 lbs. of N and 255 lbs. of P if planted with pickerelweed.
ASHS Abstract (78 KB) ASHS Presentation (774 KB)
1 Dec 2014
Assessing Irrigation Water Quality for pH, Salts, & Alkalinity
Park, D.M., White, S.A., Menchyk, N. (Clemson University)
This research paper presents an easy-to-follow flow chart for interpreting water quality reports in soil-based growing systems.
Journal of Extension 52(6) 2014