Maximum Yield Modern Growing | Vol. 21 Issue 01 2019
Developed more than 50 years ago, NFT systems can quickly produce large yields of produce with minimum water usage. However, these systems can present problems — for both home and commercial growers — if they aren’t monitored properly. Also inside: Hydro Nutrient Management, The Importance of Growroom Hygiene, Maintaining and Troubleshooting pH Control Systems, and more.
Developed more than 50 years ago, NFT systems can quickly produce large yields of produce with minimum water usage. However, these systems can present problems — for both home and commercial growers — if they aren’t monitored properly.
Also inside: Hydro Nutrient Management, The Importance of Growroom Hygiene, Maintaining and Troubleshooting pH Control Systems, and more.
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are<br />
ROOTS<br />
Featured Contributors<br />
VOLUME <strong>21</strong> – NUMBER 1<br />
January 2<strong>01</strong>9<br />
LM<br />
Dr. Lynette Morgan holds<br />
a B. Hort. Tech. degree and a<br />
PhD in hydroponic greenhouse<br />
production from Massey<br />
University, New Zealand.<br />
Lynette is a partner with Suntec<br />
International Hydroponic<br />
Consultants and has authored<br />
several hydroponic technical<br />
books. Visit suntec.co.nz<br />
for more information.<br />
MM<br />
Monica Mansfield owned an<br />
indoor garden store for 5 1/2<br />
years, sold the business and<br />
started a seven-acre homestead<br />
with her husband, Owen. Monica<br />
is passionate about gardening,<br />
sustainable living, and holistic<br />
health. She writes about these topics<br />
and her homestead adventures on<br />
her blog thenaturelifeproject.com.<br />
<strong>Maximum</strong> <strong>Yield</strong> is published monthly by <strong>Maximum</strong> <strong>Yield</strong><br />
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A<br />
Parts Per Million (PPM) and Electrical Conductivity (EC)<br />
Parts per million (PPM) and Electrical conductivity (EC) are both measurements<br />
of the total dissolved salts in your solution.<br />
EC is the measurement of a solution’s ability to conduct an electrical charge. Pure<br />
water (H 2O with nothing dissolved in it) does not conduct electricity. The higher the<br />
solution’s salt concentration, the better it conducts electricity. A grower can easily<br />
measure EC with an EC meter. While this measurement will not tell you exactly how<br />
much nitrogen, phosphorus, or potassium is in your solution, it will give you an idea<br />
of the overall nutrient concentration. You can use this number to add nutrients to a<br />
recirculating system in between reservoir changes. Most feeding schedules will tell<br />
you what the PPM or EC should be at each week’s stage of growth.<br />
Check out Monica Mansfield’s article on page 40 for more information.<br />
16<br />
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