Recent research led by Michael J. Alden from the Department of Plant and Environmental Sciences at Clemson University has shed light on innovative cultivation strategies that could significantly enhance cannabis production, particularly in controlled environments. This study, published in the journal ‘HortScience’, addresses two common challenges faced by cannabis growers: low yields and slim profit margins.
The research focuses on two primary techniques: fertilizer restriction (FR) and shoot number manipulation (SNM). The FR technique aims to reduce plant size by limiting fertilizer, which allows for increased plant density and potentially higher yields per square meter. This approach involves leaching the substrate and providing only tap water for varying durations at the beginning of the flowering phase. The results indicated that while the overall mass of the plants decreased, the yield metrics improved as the fertilizer restriction increased. Alden notes, “The yield metrics (kg·m−2) increased with the increasing FR treatments,” suggesting a more efficient use of space and resources.
On the other hand, the SNM technique involves pinching the shoot tips multiple times to create more shoots per plant. This method did not affect the plant area but resulted in shorter reproductive shoot lengths, which can eliminate the need for trellis support netting. Alden emphasizes the practical benefits of this approach, stating, “Shorter shoot lengths are desirable for eliminating trellis support netting, which helps growers reduce material costs and improve labor efficiency during harvest.”
For the energy sector, these findings present valuable opportunities. As cannabis cultivation often requires significant energy inputs for lighting and climate control in controlled environments, optimizing plant density and reducing the need for additional structural supports can lead to lower energy consumption. Furthermore, improved yields and reduced labor costs can enhance the profitability of cannabis operations, potentially leading to increased demand for energy-efficient technologies and practices within the industry.
The implications of Alden’s research extend beyond just cannabis growers; they signal a shift towards more sustainable agricultural practices that could influence energy use patterns in controlled-environment agriculture. As the industry continues to evolve, findings like these will be crucial in shaping how energy resources are allocated and utilized in the cultivation of high-value crops, including cannabis.
