Expanding Leaf Tissue Nutrient Survey Ranges for Greenhouse Cannabidiol-Hemp

Landis, Hunter; Hicks, Kristin; Cockson, Paul; Henry, Josh B.; Smith, J.T.; Whipker, Brian E.

doi:10.2134/cftm2018.09.0081

Cited by 10 publications

(32 citation statements)

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“…Other control values found in this study were within or above the listed values for Cannabis sativa 'T1' except for Mn values, which were below the listed values from Landis et al [10]. While the ranges reported by Bryson et al [9] are useful guides for estimating healthy nutrient levels in hemp tissue, it is important to remember that they are the survey ranges from plants grown in a production nursery of an unknown replicate number and unknown hemp cultivar and may not accurately predict optimum nutrient levels in all production systems in all cultivars.…”

Section: Discussioncontrasting

confidence: 66%

“…Until this extensive work can be completed, survey ranges are useful tools for estimating adequate nutrient levels. In this study, the control samples served as survey ranges, which can be compared to other published survey ranges for cannabis (Bryson et al, [9]; Landis et al, [10]). Some elements in the control samples were above (K and S) or below (Cu and Mn) the reported values from Bryson et al [9].…”

Section: Discussionmentioning

confidence: 99%

“…While the ranges reported by Bryson et al [9] are useful guides for estimating healthy nutrient levels in hemp tissue, it is important to remember that they are the survey ranges from plants grown in a production nursery of an unknown replicate number and unknown hemp cultivar and may not accurately predict optimum nutrient levels in all production systems in all cultivars. Recently, Landis et al [10] found that significant differences in nutrient concentrations occurred among CBD cultivars, suggesting that broader target nutrient ranges may be appropriate for cannabis.…”

Section: Discussionmentioning

confidence: 99%

“…This work serves as a baseline for nutritive values in the Cannabis sativa 'T1' cultivar, and it is recommended that the upper and lower ranges from this study, Landis et al [10], and Bryson et al [9] be used when evaluating leaf tissue nutrient concentrations. The nutrient disorders described in this study provide hemp growers and researchers with detailed descriptions and high-quality diagnostic images to better identify nutrient disorders.…”

Section: Discussionmentioning

confidence: 99%

“…Where sufficiency ranges of a crop are not available, survey ranges can be used to approximate the nutritional status of the plant. Survey ranges for Cannabis sativa in greenhouse nursery production have been published by Bryson et al [9], and more recently, a survey of five hemp cultivars in greenhouse production, including the cultivar used in this study, by Landis et al [10]. These tissue values are useful for cannabis growers as they aid in fertility management.…”

Section: Introductionmentioning

confidence: 99%

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Characterization of Nutrient Disorders of Cannabis sativa

et al. 2019

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Essential plant nutrients are needed at crop-specific concentrations to obtain optimum growth or yield. Plant tissue (foliar) analysis is the standard method for measuring those levels in crops. Symptoms of nutrient deficiency occur when those tissue concentrations fall to a level where growth or yield is negatively impacted and can serve as a visual diagnostic tool for growers and researchers. Both nutrient deficiency symptoms and their corresponding plant tissue concentrations have not been established for cannabis. To establish nutrient concentrations when deficiency or toxicity symptoms are expressed, Cannabis sativa ‘T1’ plants were grown in silica sand culture, and control plants received a complete modified Hoagland’s all-nitrate solution, whereas nutrient-deficient treatments were induced with a complete nutrient formula withholding a single nutrient. Toxicity treatments were induced by increasing the element tenfold higher than the complete nutrient formula. Plants were monitored daily and, once symptoms manifested, plant tissue analysis of all essential elements was performed by most recent mature leaf (MRML) tissue analysis, and descriptions and photographs of nutrient disorder symptomology were taken. Symptoms and progressions were tracked through initial, intermediate, and advanced stages. Information in this study can be used to diagnose nutrient disorders in Cannabis sativa.

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Section: Discussioncontrasting

confidence: 66%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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