Maximum Yield USA March 2018 | Page 85

T here are many quality nutrient choices on today’s market, and a few controlled experiments can give valuable information about which perform better during a harvest. Common indicators of improvement are increases in production, cost savings, or quality. Although a larger sample is more accurate, the minimum number of plants needed for such experiments is two. One is the control plant, which is fed the current nutrient regimen, and one is fed with the new feeding schedule. Other than the different nutrients, the plants should be as similar to each other as possible and grown under exact, if not very similar, conditions. Cuttings (or, clones) are commonly used to minimize the impact of genetic differences. If using more than two plants, the percentage of the crop to commit to the new feeding schedule is depen- dent on the confidence the grower has that the change will improve (or at least not hinder) production versus the proven schedule currently in use. “ COMMON indicators of improvement are increases in production, cost savings, or quality.” KEEP GOOD RECORDS Keeping good records improves accuracy. Note the experi- ment’s start date because it will allow for the calculation of daily production after harvest. For the control group, feed as normal and track the amount of each nutrient used. For the experimental group, follow the manufacturer’s recommenda- tions and again keep track of the amounts used. At harvest, make note of the harvest date, record the harvest weight from each plant, and calculate the totals of each nutrient used. Production improvements are indicated by an increase in the average amount produced per day for the duration. Subtracting the start date from the harvest date will give the total number of days for the garden. For example, a harvest on Aug. 1 minus a planting date of May 23 would be 70 days. If one group matures faster than the other, calculate each set of dates separately. #nopuddlesnotroubles Our drain tray is designed with a sloped gutter and a threaded spout so you are in control of where your water goes! It is made of sturdy ABS plastic and comes in 2 sizes with 3 different colors to accommodate a variety of garden projects. Made in the USA! drainawaydraintray.com grow cycle 83