What Nutrient Disorder do my Hemp Plants Have? A Diagnostic Guide
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The objective of this project was to demonstrate visual symptoms of common nutritional disorders of hydroponically grown hemp (Cannabis sativa L.) To generate the images used in this article, nutritionally deficient fertilizer was implemented in a deep water con- tainer hydroponic system in 1-gallon containers. TJ's CBD Hemp was propagated vegetatively and rooted for 2 weeks before placement in the DWC system. Due to time and space limitations, a few important deficiency and toxicity symptoms were studied including nitrogen, phosphorus, potassium, magnesium, and boron deficiency as well as boron toxicity. There were two replicate plants per treatment, for a total of 14 plants per crop cycle with three replicated crop cycles. The plants were monitored, the DWC water was replaced, and data was collected weekly for 6 weeks. This article presents clear visual symptoms (leaf and whole plant) as well as impacts of deficiencies on overall plant and root size.