Tobacco Notes: 1-2020 Pesticide Usage

It is important for tobacco growers to stay vigilant with what pesticides they are using and ensure they are using them correctly. Although a product may have tobacco production on the label, it does not necessarily mean it is allowed by the buying company. Chlorpyrifos (Lorsban, several other generics) is one of the more notable ai’s, as of late, that has received attention from the EPA. Because of this, several leaf buyers have stated they will not buy leaf treated with chlorpyrifos; even though there are chlorpyrifos products with tobacco production on the label. Another example is acephate (Orthene, among many others). Some leaf-buyers say “no”, others are ok with its use as long as residues are kept to a minimum. GROWERS MUST ENSURE THEY ARE TALKING WITH CONTRACTING COMPANIES. It would be devastating if a contract was pulled due to lack of communication.

Orondis Gold (Premix) Fungicide

Orondis, Orondis Gold, etc. have been one of the more confusing group of products and labels since it was introduced into the tobacco world. Until this year (2020), Orondis Gold (oxathiapiprolin) was sold as a co-pack along with Ridomil Gold SL (mefenoxam) to be applied together in the transplant water.

Now (2020), Orondis Gold (Premix) Fungicide (oxathiapiprolin + mefenoxam) is being sold as a PREMIX for the transplant water. This eliminates the need to mix two separate products. Per the label, application rate is 24.0 to 27.8 oz/ac.

There are several “Orondis” and “Ridomil” products with labels; for use in several crops. As shown below, they are not all the same and can contain several different active ingredients. Again, make sure you read the label and know what product you are using.

Quadris Flowable

Quadris is another example of multiple products with similar names. This particular one has gained interest of the tobacco industry as of late.

Quadris Flowable (azoxystrobin) is labeled in tobacco production for target spot. These other products are NOT labeled including Quadris Top which is azoxystrobin AND difenoconazole. Difenoconazole is not approved for use in tobacco and has been added to the wide list of residue testing by buying companies.

Again, please ensure you are reading labels and understand what your leaf-buying company approves and does not approve FOR ALL PESTICIDES. A simple mistake could result in total loss of a contract.

  • Matt Inman – Clemson University –
    Assistant Professor and Extension Tobacco Specialist

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