NC State Extension

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2016 Tobacco Day

Please join us on Thursday, December 1st at the Johnston County Extension Center (2736 NC-210, Smithfield, NC 27577) for …

Figure 3. The pattern of interveinal chlorosis will eventually spread to the center of the leaf, as may be seen here.
©2016 Forensic Floriculture

From the Field-Agronomy Notes

Tobacco Research Update: Magnesium Deficiency of Tobacco In this tobacco research update, we highlight the symptoms of magnesium deficiency. These images …

Figure 1. Initial B toxicity, note the crater like appearance of the leaf’s surface, and the marginal wrinkling.
©2016 Forensic Floriculture

From the Field-Agronomy Notes

Tobacco Research Update: Boron Toxicity of Tobacco In this tobacco research update, we highlight the symptoms of boron toxicity. These …

Figure 5. This ribbing will occur when leaf curling becomes very extreme, and the chlorosis is another symptom that occurs in advanced cases of B deficiency.
©2016 Forensic Floriculture

From the Field-Agronomy Notes

Tobacco Research Update: Boron Deficiency of Tobacco In this tobacco research update, we highlight the symptoms of boron deficiency. These images …

Figure 2. Intermediate Ca deficiency symptoms.  Note the yellowing on the leaf margin.
©2016 Forensic Floriculture

From the Field-Agronomy Notes

Tobacco Research Update: Calcium Deficiency of Tobacco In this tobacco research update, we highlight the symptoms of calcium deficiency. These images …

Figure 2. The symptoms of sulfur deficiency can be seen moving up the plant from the center foliage. This may help one in distinguishing between sulfur deficiency and nitrogen deficiency, which occurs first on the lower foliage.
©2016 Forensic Floriculture

From the Field-Agronomy Notes

Tobacco Research Update: Sulfur Deficiency of Tobacco In this tobacco research update, we highlight the symptoms of sulfur deficiency. These images …

Figure 3. Intermediate K deficiency, note the marginal necrotic spots and advancing interveinal chlorosis.
©2016 Forensic Floriculture

From the Field-Agronomy Notes

Tobacco Research Update: Potassium Deficiency of Tobacco In this tobacco research update, we highlight the symptoms of potassium deficiency. These images …

Figure 3. Necrotic spotting that occurs on the foliage of tobacco is a more intermediate to severe symptom of P deficiency.
©2016 Forensic Floriculture

From the Field-Agronomy Notes

Tobacco Research Update: Phosphorus Deficiency of Tobacco In this tobacco research update, we highlight the symptoms of phosphorus deficiency. These images …

Figure 4. These symptoms of pale green coloration of the upper leaves, and severe yellowing and beaching of the lower leaves may be observed by downloading the above .gif file. This image provides a 360-degree view of a symptomatic plant.
©2016 Forensic Floriculture

From the Field-Agronomy Notes

Tobacco Research Update: Nitrogen Deficiency of Tobacco In this tobacco research update, we highlight the symptoms of nitrogen deficiency. These images …

Figure 2. View of a newly transplanted burley tobacco plant in the nutrient disorder irrigation system.  Note the yellow drip emitters used to deliver the nutrient solution.
©2016 Forensic Floriculture

From the Field-Agronomy Notes

Tobacco Research Update: Development of an Online Nutrient Disorder Diagnostic Key for Tobacco Over the next few weeks, we will …