Slide 1

Slide 2 Timing of winter/fall planting Water needs vs. water use Faster establishment with lower maintenance TRWG-Z over hand- watering Slide 3 Clarify potential benefits of TRWG-Z over hand-watering Determine if single application ( or12 weeks of continual moisture) could successfully establish plants Determine if photosynthesis prior to dormant season would have substantial benefit to plant establishment Define water saving using TRWG-Z Slide 4 TRWG-Z, ( carboxymethylcellulose cross-linked polymer) Potable water City of Santa Rosa, CA Zinc Sulfate essential to many enzyme systems in plants contributes to production of growth regulators most available form of zinc to plants Glacial Acetic Acid naturally occurring auxin induce elongation in shoot cells improve uptake of minerals Slide 5 Species Quercus agrifolia Quercus lobata Planting times August 4, 2009 September 2, 2009 October 2,2009 Container size D-40 Climate-Mediterranean Month9-Aug9-Sep9-Oct9-Nov9-Dec10-Jan10-Feb 10- Mar 10-Apr 10- May 10-Jun10-Jul High102F101F87F80F65F62F71F81F82F83F97F92F Low47F40F38F30F21F32F34F33F34F35F45F Precip0.11 in.0.49 in.1.81 in.4.31 in.4.50 in.6.25 in.6.08 in.4.71 in.1.67 in.0.83 in.0.19 in.0.06 in www.accuweather.com/us/ca/santa-rosa/95401/forecast-month.asp Slide 6 Each plot 32 plants 10X18 20 with TRWG-Z -12 hand-watered August single application TRWG Hand-watered : 12 weeks, 2.5 gallon each week Last hand-watered date was October 7 September single application of TRWG-Z Hand-watered: 12 weeks, 2.5 gallon each week October single application of TRWG-Z Hand-watered: 12 weeks, 2.5 gallon each week (except during active precipitation) Slide 7 Two Harvests June 23, 2010 November 27, 2010 Three-weeks of drying time Weighed on calibrated scale Quercus agrifolia June 2010 Harvest 10 months after planting Slide 8 TRWG-Z 15 grams 15 gramsHand-watered 9 grams Quercus agrifolia Planted August 2009, harvested and weighed June 2010 Slide 9 Plant speciesHand-wateredTRWG-Z Quercus agrifolia8 15 Quercus lobata14 26 Average1120 10-month old plants Slide 10 Slide 11 Slide 12 Slide 13 Left: TRWG-Z 78(g)Right: Hand-watered 37(g) Quercus agrifolia-15 month old plants Quercus agrifolia-15 month old plants Slide 14 August 89(g) 15 month old plant September 12 (g) 14 month old plant October 9(g) 13month old plant Slide 15 42-inches 24-inches 60-inches 36-inches Quercus lobata TRWG-Z left / Hand watered right Quercus agrifolia TRWG-Z left / Hand watered right Slide 16 Slide 17 Slide 18 Photos taken August 23, 2012 Slide 19 Slide 20 Late summer planting appears to allow sufficient photosynthesis resulting in ample carbohydrate storage for spring plant growth Zinc and Glacial Acetic Acid contribute to the production of essential growth over potable water with no nutrients Using TRWG-Z contributes to overall water efficiency No plants received water after 12 weeks -1 fatality-continual moisture appears necessary Slide 21 TRWG-ZHAND-WATER Per Plant 2.5 gallons at planting 1 Quart of TRWG-Z 12 weeks = 2.75 gallons Per plant 2.5 gallons per week for 12 weeks = 30 gallons Water saving per plant: 92% Slide 22 Economics Water efficiency Unpredictable weather Success criteria Slide 23 (1993). Zinc, needed throughout the root zone. Micronutrient news and information, Vol. 13(No. 4). (1994). Zinc-the most important micronutrient. Micronutrient news and information, Vol. 14(No. 3) Amrani, M., Westfall, D. G., & Peterson, G. A. (1993). Zinc plant availability as influenced by zinc fertilizer sources and zinc water solubility. Oxford: Clarendon Press. Arteca, R. N. (1996). Plant growth substances, Principles and applications. New York, NY: Chapman and Hall. Mordvedt, J. J., Cox, F. R., Shuman, L. M., & Welch, R. M. (1991). Micronutrients in agriculture (2nd ed.). Madison, WI: Soil Science Society of America. Wheeler, J., PhD, & Peterson, K. (2006). DRiWATER plus, a new product (cross linked carboxymethylocellulose gel with zinc and acetic acid). Tucson, AZ: Research conducted at Acre Inc. Source for Santa Rosa Temp. & Precip: *http://www.accuweather.com/us/ca/santa-rosa/95401/forecast- month.asp