Maximum Yield USA May 2018 | Page 72

bloom boosters “ A N OV E R A BU N DA N C E O F A N Y MAC RO N U T R IE N T IN irrigation water O R A G ROWT H ME D IU M WIL L AC T UA L LY H IN D E R T H E U PTA KE O F A L L MAC RO N U T R IE N T S .” While most gardeners, novices and experts included, don’t have the time to consistently test their irrigation and runoff water with a laboratory to get ppm readings, this is a great way for one to understand exactly what their plants are being fed. Testing both irrigation and runoff water two to three times during a plant’s life will provide enough information to restructure a fertilization program founded on the basics. For Hoare, he says it is a bet ter bet to base nutrient formula- tions on the ppm readings of macronutrients in irrigation and runoff water rather than what is recommended on a nutrient feeding schedule. With this critical approach, Hoare recom- mends a N-P-K ratio of 7-6-12 during the flowering period. Obviously, these numbers stand in stark contradiction to the 0-50-30 ratios that abound in bloom booster formulations. WH AT D O E S IT A L L ME A N ? Plants can only handle a limited amount of fertilization of any macronutrient before the process becomes counterpro- ductive. This notion is where Hoare’s ppm data really comes into play concerning bloom boosters. According to Hoare, an overabundance of any macronutrient in irrigation water or a growth medium will actual hinder the uptake of all macronutrients. As far as bloom boosters are concerned, a majority of standard nutrient feeding regimens already contain sufficient phosphorus and 72 grow cycle