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Peanut Diseases & Insects SCSC 306: Grain, Fiber, & Oilseed Crops Wayne Smith Professor, Cotton Breeding Office: (979) 845-3450

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Presentation on theme: "Peanut Diseases & Insects SCSC 306: Grain, Fiber, & Oilseed Crops Wayne Smith Professor, Cotton Breeding Office: (979) 845-3450"— Presentation transcript:

1 Peanut Diseases & Insects SCSC 306: Grain, Fiber, & Oilseed Crops Wayne Smith Professor, Cotton Breeding Office: (979)

2 OSU Extension SCSC 306: Peanut Diseases

3 OSU Extension SCSC 306: Peanut Diseases

4 Number of “rots” affect peanuts. Limb rot is an example. Control of all of the “rots” are similar as shown below. OSU Extension photo/comments SCSC 306: Peanut Diseases

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6 Photo: courtesy of OSU Coop. Ext. Service SCSC 306: Peanut Diseases Root-knot nematodes can be effectively controlled with crop rotation; However, root-lesion nematodes are more Difficult to control. Crop rotation has not been effective in reducing levels of this species because it has a wide host range and can reproduce on most rotational crops.

7 Leaf spots, caused by Cercospora or Cercosporidium fungi, are the most common and serious diseases of peanut. Control is by field sanitation and fungicides. (see next slide) [Photos from OSU Cooperative Extension] SCSC 306: Peanut Diseases Leaf Spots

8 Early and Late Leafspots in peanut (slide 2) SCSC 306: Peanut Diseases

9 OSU Cooperative Extension SCSC 306: Peanut Diseases

10 Scerotinia Blight is probably the most serious disease of peanut in Texas Photos: OSU Extension SCSC 306: Peanut Diseases

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12 PSV is seed borne and aphid transmitted; Control is by avoiding seed not certified to be PSV free; no chemical nor host plant resistance (chemical control of aphid may help) OSU Coop. Ext. SCSC 306: Peanut Diseases

13 Spread is vectored by thrips and thus control of thrips with insecticide may be mandated; not transmitted through seed. Photos: OSU Extension SCSC 306: Peanut Diseases


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