Maximum Yield USA March 2017 | Page 132

growers know

“ Though there is still work to be done , there is evidence that sweet potatoes could be a reliable source of hydroponically grown carbohydrates .”

will help define what type of containers can be used to grow hydroponic sweet potatoes and if the total weight of such a system would rule out its potential as a roof-grown crop . Next , there ’ s the question of pest control . In upcoming 2017 trials , ISH will test a garlic spray , a mixed garlic and pepper spray , and an organic commercial insecticide to deter insect pests . As for nutrients , the experiments and trials so far have only used a grow nutrient . Through literature search and experience , it is likely that a switch to a root nutrient after the vines are established would help increase sweet potato yield . The experiments in 2017 will test this hypothesis with six root nutrient formulas . Those six will help show how levels of nitrogen and potassium increase root harvest and test how selenium levels are affected . The selenium trials are particularly important because too much selenium can create a toxic plant .
Though there is still work to be done , there is evidence that sweet potatoes could be a reliable source of hydroponically grown carbohydrates . Besides the increasing yields in simplified hydroponics compared to soil , there is an advantage in that soilborne diseases and bacteria can be avoided in simplified hydroponics . Still , only time will tell if these trials will lead to sweet victory .
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