Adjuvants Peanut Notes No. 100 2021

— Written By
en Español / em Português
Español

El inglés es el idioma de control de esta página. En la medida en que haya algún conflicto entre la traducción al inglés y la traducción, el inglés prevalece.

Al hacer clic en el enlace de traducción se activa un servicio de traducción gratuito para convertir la página al español. Al igual que con cualquier traducción por Internet, la conversión no es sensible al contexto y puede que no traduzca el texto en su significado original. NC State Extension no garantiza la exactitud del texto traducido. Por favor, tenga en cuenta que algunas aplicaciones y/o servicios pueden no funcionar como se espera cuando se traducen.


Português

Inglês é o idioma de controle desta página. Na medida que haja algum conflito entre o texto original em Inglês e a tradução, o Inglês prevalece.

Ao clicar no link de tradução, um serviço gratuito de tradução será ativado para converter a página para o Português. Como em qualquer tradução pela internet, a conversão não é sensivel ao contexto e pode não ocorrer a tradução para o significado orginal. O serviço de Extensão da Carolina do Norte (NC State Extension) não garante a exatidão do texto traduzido. Por favor, observe que algumas funções ou serviços podem não funcionar como esperado após a tradução.


English

English is the controlling language of this page. To the extent there is any conflict between the English text and the translation, English controls.

Clicking on the translation link activates a free translation service to convert the page to Spanish. As with any Internet translation, the conversion is not context-sensitive and may not translate the text to its original meaning. NC State Extension does not guarantee the accuracy of the translated text. Please note that some applications and/or services may not function as expected when translated.

Collapse ▲

Many people are beginning to consider not including traditional adjuvants with herbicides when they are including Dual Magnum in the tank. My view is that for postemergence herbicides it is important to follow closely the label recommendation on adjuvant use. I am not aware of postemergence herbicide labels stating that Dual Magnum is a replacement for nonionic surfactant or crop oil concentrate. I understand the value of residual weed control with Dual Magnum and I understand that the formulation of Dual Magnum my assist herbicides applied to foliage in their effectiveness. It is serving as an adjuvant in some mixes. But if the label calls for crop oil concentrate or nonionic surfactant, my recommendation is to include the adjuvant even if Dual Magnum is applied.

With paraquat in peanuts the rate of 80/20 nonionic surfactant is 1 pint per 100 gallons spray solution. For herbicides such as Cadre, Ultra Blazer, Storm and Cobra the rate of 80/20 nonionic surfactant is 1 quart per 100 gallons. For Basagran by itself, I recommend 1 quart of crop oil concentrate per acre for yellow nutsdege control. But Basagran can be applied with 80/20 surfactant at 1 quart per 100 gallons. Cadre, Ultra Blazer, Storm, and Cobra can also be applied with crop oil concentrate. Products that contain clethodim (grass herbicide) need crop oil concentrate in most cases. Rates vary but generally 1 quart per acre or 1.0% on a volume basis. When mixing clethodim with the broadleaf/sedge herbicides listed above crop oil concentrate needs to be included. In some instances, I will recommend 1 pint per acre of crop oil concentrate with these mixes. 2,4-DB labels generally do not indicate that adjuvant is needed. However, I will often apply 2,4-DB with 80/20 surfactant. For the other broadleaf herbicides (Cadre, Cobra, Ultra Blazer, Storm), I generally do not see a difference between 80/20 surfactant and crop oil concentrate a few weeks after application (the final result) but in some cases, the crop oil will show results more quickly than 80/20 surfactant.

With all of the above possibilities, the final decision should be made based on the product label.