Commodities: Fieldcrops: Peanuts: Peanut Production
1998 Peanut Update Abound - A New Peanut Fungicide
Tim Brenneman,
Plant Pathologist
Growers have a new fungicide labeled for use on peanuts that will be an effective tool for managing soilborne diseases. This product is the first of a new line of chemistry that originated with compounds derived from mushrooms. The active ingredient is azoxystrobin and it has a mode of action different than any of our previously labeled fungicides. It is active on a very wide range of fungi pathogenic to a variety of crops. Azoxystrobin is also active on strains of fungi resistant to some other fungicides such as the sterol demethylation inhibitors and the benzimidazoles. This makes it a good addition to our arsenal of products available to manage fungicide resistance. However, it has a single site mode of action and therefore could also be susceptible to the development of fungicide resistance.
The trade name of azoxystrobin on peanuts is Abound which is formulated as a 2.08 flowable. It should be applied as a foliar spray at about 60 and 90 days after planting. Since it does have activity on foliar diseases, it can be substituted for the sprays normally applied for leaf spot at those times. However, the residual control for leaf spot is only 10-14 days, so the rest of the spray schedule will need to be maintained as usual. The use rates will be 18.5-24.6 fl oz per acre per application. It is labeled for ground sprays only and an adjuvant should not be needed.
At current prices, Abound will be the most expensive peanut fungicide option. Therefore it would be wise to use it only in those situations where it is most needed. Although Abound gives good control of white mold (stem rot), both Folicur and Moncut will provide similar levels of control. The real strength of Abound will be for Rhizoctonia limb rot where it appears to be the best available option. Based on previous experiences, sites most likely to benefit from Abound applications are those receiving regular irrigation, particularly those high production fields with lots of vine growth. Fields planted to peanuts continuously or in short rotation would be good candidates for Abound. Basically the greater the history of problems with limb rot on peanut the greater the likelihood that Abound will provide yield increases as compared to other available products.
Attention: Pesticide Precautions
1. Observe all directions, restrictions and precautions on pesticide labels. It is dangerous, wasteful and illegal to do otherwise.
2. Store all pesticides in original containers with labels intact and behind locked doors. "Keep pesticides out of the reach of children."
3. Use pesticides at correct label dosage and intervals to avoid illegal residues or injury to plants and animals.
4. Apply pesticides carefully to avoid drift or contamination of non-target areas.
5. Surplus pesticides and containers should be disposed of in accordance with label directions, to contamination of water and other hazards will not result.
6. Follow directions on the pesticide label regarding restrictions as required by State and Federal Laws and Regulations.
7. Avoid any action that may threaten an Endangered Species or its habitat. Your county extension agent can inform you of Endangered Species in your area, help you identify them and, through the Fish and Wildlife Service Field Office, identify actions that may threaten Endangered Species or their habitat.
Trade names are used only for information. The Cooperative Extension Service, the University of Georgia College of Agricultural & Environmental Sciences, does not guarantee or warrant published standards on any product mentioned; neither does the use of a trade or brand name imply approval of any product to the exclusion of others that may also be suitable.