Ball Tech On Demand: Training Your Team to Water Properly
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Dr. Will Healy, Ball Senior Technical Services Manager, explains why a grower's job is to dry plants to the correct moisture. He covers managing water loss, the water knowledge pyramid and the five levels of water. Copyright 2020 Ball Horticultural Company
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Ball Tech On Demand: Training Your Team to Water Properly
- 1. Copyright 2020 Ball Horticultural Company Train Your Team to Water Properly Will Healy Senior Technical & Research Manager Ball Horticultural Company
- 2. Copyright 2020 Ball Horticultural Company A Grower’s Job is to Dry Plants to the Correct Moisture Training Issue Growers with nothing to do Water! Pencil Watering -> Plan What to Do Next Day
- 3. Copyright 2020 Ball Horticultural Company Dr Will, Dr Will Help me please - I suffer from….. PWS!* Paranoid Watering Syndrome Pay to Water
- 4. Copyright 2020 Ball Horticultural Company Fish grow in Water Roots grow in Air
- 5. Copyright 2020 Ball Horticultural Company Water Knowledge Pyramid When to Water-How Dry? How Much to Water Where to Water Plant Demand Language of Watering W1-W5 ClimateQualitative aka Opinion based Quantitative aka Data based
- 6. Copyright 2020 Ball Horticultural Company Does Soil Breath? Water in-Air out Water out-Air in What is this?? What are you trying to do??
- 7. Copyright 2020 Ball Horticultural Company Does Soil Breath? Water in-Air out Water out-Air in What is this?? What are you trying to do?? 5 3 1
- 8. Copyright 2020 Ball Horticultural Company ‘Tools of the Trade’ 0.4-1 GPM 0.94-1.6 GPM 1.6-3.2 GPM
- 9. Copyright 2020 Ball Horticultural Company ‘Tools of the Trade’ 0.4-1 GPM 0.94-1.6 GPM 1.6-3.2 GPM ‘Tools of the Trade’
- 10. Copyright 2020 Ball Horticultural Company ‘Tools of the Trade’ 0.4-1 GPM 0.94-1.6 GPM 1.6-3.2 GPM ‘Tools of the Trade’
- 11. Copyright 2020 Ball Horticultural Company Watering Technique Vol*speed = Qty/cell 3 5-33-5 5
- 12. Copyright 2020 Ball Horticultural Company Starts with Your Water Tunnel Uniformly add water to start germination process ❖ Pressure & gpm per nozzle ❖ Number of nozzles → N1 = glue seed or settle URC → N2 = moisture around seed or URC-soil contact → N3+ = moisture in soil
- 13. Copyright 2020 Ball Horticultural Company Silly 100 gm Does Make a Difference!
- 14. Copyright 2020 Ball Horticultural Company Watering vs Flooding ❖ Day 0-5 key period ❖ Irrigation speed ❖ ‘Grit’ is critical
- 15. Copyright 2020 Ball Horticultural Company Water by Weight ❖Better plotting, more attention ❖Less stretched plants (also fertilizer) ❖Calculation day and night losses ❖Record weight after watering
- 16. Copyright 2020 Ball Horticultural Company
- 17. Copyright 2020 Ball Horticultural Company
- 18. Copyright 2020 Ball Horticultural Company Pyramid Level 4 Where to Water ❖3-Dimensional Space! ➢Edge ➢Middle ➢Depth W2-3 W5-2 W3-5W4-5 Highly Branched Root System Top Horizontal Root System Water Root System Vertical Root System
- 19. Copyright 2020 Ball Horticultural Company Watering Success ➢ Saturate to a level 4 (bottom drip) ➢ Dry to a level 2 ❖ Train your watering pattern to a 4-2 ➢ It’s the drying that promotes rooting ➢ Water to get to the next dry point ❖ Draw the roots to the bottom of the container.
- 20. Copyright 2020 Ball Horticultural Company Drying out a cell ❖ Drying out a cell is due to evaporation of the water from the soil ❖ Water loss is sigmoidal over time ➢ Incremental loss is slowest at level 5 & 1 ➢ Incremental loss is linear with time at level 4-2 ❖ If water loss is 200-300 g per day then the loss of 800 g (level 4➔2) will take 2-4 days.
- 21. Copyright 2020 Ball Horticultural Company What drives water loss from the container? Night Water Loss ➢ 200+ gm – Rapid drying ➢ 100-200 gm – Ideal ➢ 50-100 gm – Too wet issues ➢ < 50 gm – Tip abortion A B ❖ ET 1. Evaporation 2. Transpiration ➔ Change in tray weight will predict the ET rate ➢ Weigh the same container in afternoon & morning. ➢ Night ET = afternoon-morning ➢ Day ET = morning-afternoon
- 22. Copyright 2020 Ball Horticultural Company Managing Water Loss ❖ How much water (weight) is lost each day? ❖ How much water (weight) is lost each night? ❖ How much water weight must I add to reach the target weight tomorrow? ❖ How much water weight must I add to get water to the bottom of the cell or pot? ❖ It’s not the how wet or dry but how long does it take to get to the next watering time
- 23. Copyright 2020 Ball Horticultural Company Water Knowledge Pyramid When to Water-How Dry? How Much to Water Where to Water Plant Demand Language of Watering W1-W5 Climate Qualitative & Quantitative Set Your Dry Target Set Your Wet Target Drive the Roots Down VPD Drives Water Loss Each Stage Right Target
- 24. Copyright 2020 Ball Horticultural Company More Resources: View the full slideshow (and many more) at: https://www.slideshare.net/bcalkins STEM Podcast: The Language of Watering Part One - https://stempodcast.podbean.com/e/the-language-of-watering/ STEM Podcast: The Language of Watering Part Two - https://stempodcast.podbean.com/e/watering-the-rest-of-the-story/ Ball Seed LinkedIn: https://www.linkedin.com/company/ball-seed-co Greenhouse Tech Team Closed Group: Search Greenhouse Tech Team on Facebook Groups