CEA Tech Tips

Boosting Root Development in Cannabis Crops

Cannabis growers are a diverse group. Some grow hemp, others grow marijuana. Some produce organic crops, others use conventional products. But, all cannabis growers have one thing in common: They need healthy roots as quickly as possible.

Proper moisture management is the key to good root growth. Early in propagation, maintain high humidity around seeds and cuttings without adding moisture to the media, which should be wet but not saturated. As roots develop, careful irrigation maintains even media in the wet to moist state. Once roots reach the bottom of the cells, allow the media to dry to the lower end of moist, widening the moisture cycle as the roots continue to develop. Media should never be allowed to reach a dry stage during propagation.


Essential Plus 1-0-1
To boost root development, Griffin’s GGSPro technical team encourages cannabis growers to utilize Essential 1-0-1. Essential 1-0-1 is a liquid, nutritional supplement containing humic acid, yucca (natural wetting agent) and amino acids in a solution with a very low nutritional charge. This OMRI-listed, organic product has no pesticidal activity or claims, which means it is universally acceptable for use on cannabis. Essential 1-0-1 has a proven track record of speeding and increasing root growth in a wide variety of crops, and we are seeing the same thing in cannabis. Cultivators report stronger root growth and positive impacts on secondary compounds. Apply once as roots start to develop in propagation and again at transplant at 32 oz/100 gal. Many growers realized benefits when repeating application every four weeks throughout the crop. Essential 1-0-1 is compatible with most water-soluble fertilizers, which means you can blend it in your concentrated stock tanks and inject right along with your fertilizer. Or, mix it at final rate in your batch reservoirs.


Add Essential 1-0-1 to your SOP, watch your moisture levels and build roots more quickly for ongoing crop health.

 

Featured products


Essential Plus 1-0-1 2.5 gal

Essential Plus 1-0-1 2.5 gal
No 160004GR

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Essential Plus 1-0-2 30 gal

Essential Plus 1-0-2 30 gal
No 166001GR

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Essential Plus 1-0-3 1 gal

Essential Plus 1-0-3 1 gal
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Essential Plus 1-0-4 1 qt

Essential Plus 1-0-4 1 qt
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Planning to purchase a larger number of containers of Essential 1-0-1? Ask about volume discounts.
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Hemp Russet Mites: Scouting and Control Tips

Hemp Russet Mite (HRM) is an eriophyid mite that can severely damage flowers and decrease THC and CBD in cannabis production. Eriophyid mites are small, cigar-shaped pests; they’re capable of reproducing profusely. They infest many horticultural crops.


The eriophyid mite that occurs in cannabis is called Aculops cannabicola. It’s known to occur on cannabis, as well as hops and hackberry.

HRM can infest indoor production facilities throughout the year. These mites are carried on incoming plant material, on staff and tools. They can also move readily on wind currents.


Hemp Russet Mites on cannabis

HRM scouting tips

HRM detection should be part of the weekly scouting protocol that goes with yellow sticky card and whole-plant inspections. HRM should be addressed as quickly as possible.

When scouting, growers should look for leaf curling and carefully inspect leaves with a 20X hand lens or greater magnification. Scout crop edges and, since HRM are known to spread on wind currents, look near fans, too.

Inward leaf curling is another sign of infestation. If leaf curling is observed, sample the leaves and look in the nooks and crannies of the leaves for HRM.

HRM control options

Control options in cannabis are limited. Beneficial insects are a great option for early HRM infestations, but they’re not known to completely eradicate HRM populations. Release BCAs preventively for best control of HRM.

Horticultural oil sprays are effective at reducing populations. Applicators must read and follow the label instructions, and also follow all state and local regulations regarding chemical application to cannabis crops. All products listed below may not be approved for use in all states. Products other than those listed may be safe, effective and legal.

 

Featured products

Product Name
Description
Item Number
Ecotec Plus 17%
2.5 gal, OMRI-listed
70-1507
SuffOil-X Spray Oil 80%
2.5 gal, OMRI-listed
70-4040
Amblyseius andersoni
62,500 BI 250 mini sachets w/hook
30AI2H
Amblyseius andersoni
Mini sachets on sticks, 1000/CS
SB0016-50
Anderline aa
A. andersoni, 125K 5 liter bag SB
SB0016-02
Anderline aa
A. andersoni 200 mini sachets SB
SB0016-31
Amblyline cal
A californicus 200 mini sachets w/hooks SB
SB0013-31
Californiline
Amblyseius californicus, 2000/bottle SB
SB0013-01

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