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Welcome to the

White County, Arkansas
Cooperative Extension Service

Check out our 'What We Do' Video
to learn about how Extension helps in White County!

We are part of the University of Arkansas Cooperative Extension Service’s statewide network and the University of Arkansas System’s Division of Agriculture. Our mission is to provide research-based information through non-formal education to help all Arkansans improve their economic well-being and the quality of their lives.  Whether it is agriculture, 4-H, health and living, or community development, the White County Extension Office is at your service! 

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Photo of black knot fungus, which looks like a crusty, knobby, blackish claw.

Black Knot
on Plum and Cherry

The disease black knot is caused by a fungus. Black knot can occur on sweet and sour cherry, American, European, and Japanese varieties of cultivated plums and prunes as well as wild cherries and plums. The disease is common throughout much of Arkansas occurring on many wild plum and cherry trees. These serve as an annual source of infection for cultivated varieties.

Black Knot


Picture of a curling, browning leaf on a peach tree.

Peach Leaf Curl

Peach leaf curl is a fungal disease that, under the right conditions, can cause severe early defoliation and crop loss on nearly all peach and nectarine cultivars.


For more details see Department of Plant Pathology PLANT HEALTH CLINIC NEWS from May 2013






Photo: Peach leaf curl, taken by Sherrie Smith

Pecan leaves with yellowish raised knots.

Pecan Phylloxera

The pecan leaf phylloxera and the southern pecan leaf phylloxera feed primarily on the foliage, whereas the pecan phylloxera attacks the foliage, shoots and fruit and is therefore the most damaging (see image).  The pecan phylloxera is a small, aphid-like insect that is rarely seen, but the galls it produces are prominent and easily noticed.  Severe infestations can cause malformed, weakened shoots that finally die; such infestations can destroy entire limbs.

Pesticide recommendations


Drawn figure of a cow with a triangle marking the area of the neck to indicate where injection goes.
Picture shows subcutaneous injection site around shoulds.


As cattle producers, we supply this nation with beef. Today’s consumer demands that our product is wholesome and free from blemishes. In order to meet this justified demand, we all need to be diligent in assuring quality in our final product. One very important factor in providing quality in the beef we produce is performing injections properly.

When injecting a medication or vaccine into a beef animal,remember to target the neck region. The landmarks outlining this region are noted in the injection zone triangle shown in Figure 1. Regardless of the animal’s age, all intramuscular and subcutaneous injections should be given in the neck region, never in the rump or back leg.

When injecting subcutaneously, remember to use the “tenting method” of injection shown in Figure 2. This method ensures that the product is delivered under the skin and keeps it out of the underlying muscle tissue.

For more information see our Fact Sheet FSA-3109