Dan Anco Clemson July 30 Peanut Notes No. 143 2021

— Written By
en 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.

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 ▲

Dan Anco Comments, July 30, 2021

Lesions on the Leaf

Late leaf spot is starting to be found in more fields this week, including those with timely and expensive fungicide programs. Switching modes of action and/or including Bravo or sulfur in with the next fungicide application, or tank mixing a systemic product with bravo (e.g., if the previous spray was bravo) are all options to buffer ourselves from anyone product potentially being a weak link. Crop oil burn can raise an eyebrow or two and can be found in the mid-upper canopy following an herbicide spray. Spots from oil or surfactant do not have raised spores on the underside as LLS does.

Soil Disease

Fields that have a rotation history with legumes are at an increased risk for soil diseases such as white mold/stem rot and Cylindrocladium black rot. We have several effective fungicides for in-season management of white mold, including elatus, excalia, convoy/umbra, fontelis, and provost, whereas our most effective options for CBR get applied in-furrow at planting. If some of these have been applied and we still see disease, it likely would have been much worse if we did not do what we did. We’ll let slide the analogy of a bowl of soup and an ice cube. A few pictures including examples of characteristic symptoms/signs for white mold and CBR are included.


Fields nearing the 90 or the later 105 DAP fungicide spray, especially in our southwestern counties, may consider including a preventative application of Dimilin 2 fl oz/A when the sprayer is going across the field for velvetbean caterpillar control. This is a relatively inexpensive treatment with a good residual. Do we need it this year? Maybe not, though I at least want to mention it after the last two years with VBC coming in about a month earlier than was typical for many moons before. Worms generally are more of a concern during extended dry periods, and while many areas have been fortunate with rains, not all have. Dimilin has a 28-day PHI and is not intended to control established populations. VBC are easy to kill if they do show up and start eating uninvited, but if left to their own devices, they can defoliate a canopy quickly. May not need to spray for VBC early this year, but good to keep an eye out nonetheless.

The week ahead looks encouraging for rain.

Dan Anco Peanut Pictures 7-30-21

Yield chart

Defol chart

Dan Anco

Extension Peanut Specialist and Associate Professor

Department of Plant and Environmental Sciences

Clemson University – Edisto Research and Education Center

64 Research Road

Blackville, SC 29817

630-207-4926 cell


Clemson Extension – Peanuts