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Oct 2, 2024 | 
cannabisbusinesstimes.com | Brian E. Whipker |Patrick Veazie
When trying to optimize yield while minimizing inputs, it can be challenging to tease apart which nutrients might be limiting yield. This is largely because certain nutrient deficiency symptoms will mimic each other. By learning about the role of these nutrients and how they interact with the plant’s physiology, we can narrow down which nutrient may be limiting yields. Two nutrients that share very similar nutrient deficiency symptoms are potassium (K) and magnesium (Mg).
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Aug 5, 2024 | 
cannabisbusinesstimes.com | Patrick Veazie |Brian E. Whipker
Plants, much like humans, require certain nutrients and minerals to thrive. These macro and micronutrients help plants grow properly, obtain optimal yields, and complete their lifecycles. When creating a fertilizer recipe or selecting which pre-blended fertilizer to utilize, understanding what is being supplied to the plant is important. Just as important, is selecting a fertilizer rate that will promote plant growth without overfertilizing, which leads to both fertilizer and money waste.
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Aug 5, 2024 | 
cannabisbusinesstimes.com | Patrick Veazie |Brian E. Whipker
Plants, much like humans, require certain nutrients and minerals to thrive. These macro and micronutrients help plants grow properly, obtain optimal yields, and complete their lifecycles. When creating a fertilizer recipe or selecting which pre-blended fertilizer to utilize, understanding what is being supplied to the plant is important. Just as important, is selecting a fertilizer rate that will promote plant growth without overfertilizing, which leads to both fertilizer and money waste.
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Jul 23, 2024 | 
cannabisbusinesstimes.com | Patrick Veazie |Brian E. Whipker
Many retail-focused, commercially available substrates advertise increased plant and root growth compared to their competitors. Often, this is a result of organic and/or nonorganic pre-plant fertilizer charges that are included in the substrate to supply longer-term fertilizer requirements to the plant.
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May 14, 2024 | 
cannabisbusinesstimes.com | Patrick Veazie |Brian E. Whipker
There are a wide range of pests that can plague cannabis that can interfere with optimal production. A few of the most common mite species found in cannabis are broad (Polyphagotarsonemus latus), cyclamen (Phytonemus pallidus), russet (Aculops cannibicola), and spider (Tetranychus utricae). Knowing how to properly identify them and the different symptoms from each of these mites are the first steps to controlling the problem. Hemp russet mites are pale green in color and have elongated bodies.
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Apr 18, 2024 | 
cannabisbusinesstimes.com | Paul Cockson |Patrick Veazie |David Logan |Brian E. Whipker
When troubleshooting nutrient disorders in cannabis, often the symptoms and possible culprits can be confusing. Additionally, the margins for success and failure can often be very small, making even incremental changes in cultural practices detrimental. Thus, learning the art and science of diagnostics is important and valuable.
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Apr 10, 2024 | 
cannabisbusinesstimes.com | Paul Cockson |Patrick Veazie |David Logan |W. Garrett Owen |Brian E. Whipker
A recurring series focusing on plant cultivation by university researchers. All plants require certain macro- and micronutrients to grow properly and complete their lifecycles. If one of these elements is lacking or overapplied, plant growth problems and tissue damage will occur, both above and below ground. When applying these necessary elements, it is important to hit the “sweet spot”—the optimal level for each nutrient. But looking at the overall nutrient levels in your crop is also important.
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Apr 10, 2024 | 
cannabisbusinesstimes.com | Paul Cockson |Patrick Veazie |David Logan |W. Garrett Owen |Brian E. Whipker
Figure 2: Initial symptoms of high EC on a vegetative cannabis plant. Notice specifically the downward curling and cupping of the new and expanding leaves and the slight yellowing (chlorosis) of the leaf tissue along the midrib of the leaflet. All Photos by Brian WhipkerA recurring series focusing on plant cultivation by university researchers. All plants require certain macro- and micronutrients to grow properly and complete their lifecycles.
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Apr 4, 2024 | 
greenhousegrower.com | Brian E. Whipker
Photo: Brian Whipker With more and more growers utilizing wood-based substrates for production (whether the mix has a small percentage of wood or a larger volume), there comes a need to change the way one manages growth and irrigation. That’s according to North Carolina State University Horticulture Professor Brian Whipker who, in a recent eGRO blog post, notes that a number of growers have talked about the need to change their irrigation practices.
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Feb 9, 2024 | 
cannabisbusinesstimes.com | Patrick Veazie |Brian E. Whipker
Figure 1. Excessive substrate electrical conductivity levels can result in girdling of the young transplant. All Images: Brian Whipker Many retail-focused, commercially available substrates advertise increased plant and root growth compared to their competitors. Often, this is a result of organic and/or nonorganic pre-plant fertilizer charges that are included in the substrate to supply longer-term fertilizer requirements to the plant.
