J.Watering

20 meql 4x 20 oz acid 88 oz acid 4 watering high

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Unformatted text preview: w Alk, Hi pH 6.0 5.0 Low Alk, Low pH 4.5 Time Alkalinity vs pH Grower A pH = 9.3 Alk = 1.42 meq/l Target pH 5.8 Grower B pH = 8.3 Alk = 6.20 meq/l 4X 20 oz acid 88 oz acid 4 Watering High Alkalinity/pH ◆  Small problem: Fertilizer managementNH4-based ◆  Large problem: Acid injection Treatments for High Alkalinity/pH ◆  Small problem: Fertilizer managementNH4-based ◆  Large problem: Acid injection Acid Injection 5 Watering Correcting Problems ◆  Treat water ◆  Re-drill well or drill another well ◆  Find another source Contaminants ◆  Herbicides ü༏ Are you using surface water? Water Quality Summary ◆  High priority quality water with you everyday ◆  Use filters to reduce sediment ◆  Consider $/gallon in addition to total cost. ◆  Poor 6 Watering 90% loss of water absorbed Water “Loss” 40% loss of water applied 90% loss evapotranspirartion Water “Loss” ◆  10 oz applied drainage ◆  After ü༏  8 40% loss evaporation oz ◆  After ü༏  4.8 ◆  After surface evap. oz ET ü༏  0.48 ◆  Total oz water loss ü༏  ~95% 20% loss by leaching Leaching ◆ Recommended: 10 to 20% ◆ In practice: 40 to 80% ◆ Sometimes: 200 to 400% ◆ Small pots leach more than large pots! 7 Watering Water Loss N ◆  Pots ü༏  Small dry faster than large ◆  Benches ü༏  Edges dry faster than middle ü༏  South end dries faster than North When to Water ◆  Measured ü༏  Weight change ◆  Tensiometers ◆  TDR When to Water? ◆  “Feel” ü༏ Experience based ü༏ Weight/look of plant 8 Watering Experience!! Water: The Best PGR Water: The Best PGR 9 Watering Water Stress: High Salts Water Frequency 5X /week 3X /week 1X /week...
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