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Sp341-V-Sampling Stored Grain For Insects, Molds And Related Problems, The University Of Tennessee Agricultural Extension Service

Field & Commercial Crops

The periodic and timely sampling of stored grains can detect existing or potential problems before considerable damage has occurred. Proper sampling of stored grain can reveal increases in moisture or temperature and insect or mold problems in the grain.

It is important to be aware of the potential hazards of sampling inside a grain bin. Suffocation can occur in grain bins, and sampling should be done with caution.

Sp290-F Maple Leaf Pouch Galls, The University Of Tennessee Agricultural Extension Service

Forestry, Trees, and Timber

Eriophyid mite species cause a variety of pouch galls on red, sugar and silver maples. Pouch gall formation, a localized growth reaction of the infested plant, occurs as a result of mite feeding activity. The species of mite can be identified by the specific characteristics of the gall on the host plant.

Sp290-R-Whiteflies In Ornamentals, The University Of Tennessee Agricultural Extension Service

Home Garden, Lawn, and Landscape

Whiteflies are economically important insects on ornamentals grown in the greenhouse. Although these pests are most serious in the greenhouse, whiteflies may also attack ornamental plants grown outdoors. Some of the preferred woody ornamental hosts include barberry, redbud, Fucshia, honeylocust, black locust, Hibiscus, Lantana, coffeeberry, rose and Jerusalem cherry.

Sp290-T-Holly Leafminers, The University Of Tennessee Agricultural Extension Service

Home Garden, Lawn, and Landscape

Holly leafminers are the most injurious pests of holly in the eastern United States. The holly leafminer was introduced from Europe. This insect is a primary pest of American or Christmas holly. Injury results from the larval mining activity just under the upper leaf surface. Additional damage is caused when females repeatedly puncture the leaves with their ovipositor (egg-laying structure). Punctured leaves become deformed.

Pb1622-Disease And Insect Control In Home Fruit Plantings, The University Of Tennessee Agricultural Extension Service

Home Garden, Lawn, and Landscape

Growing fruit in the home garden can be an interesting, fun and rewarding hobby. Many novices dream of plucking perfect fruit off trees in their yards. This does not happen without a great deal of work. Control of pests (insects and diseases) is an integral part of the care necessary to achieve good results.

This publication provides guidelines for spraying home fruit plantings, but good pest control is not possible if spraying is the only action taken. Cultural practices such as pruning, sanitation, variety selection and selecting open, sunny sites for planting are necessary for good pest control. Specific cultural …

Sp290-Q-Boxwood Leafminer, The University Of Tennessee Agricultural Extension Service

Home Garden, Lawn, and Landscape

Boxwoods were brought into the United States in the 1800s. With the introduction of this plant came the boxwood leafminer, Monarthropalpus flavus (=buxi) Schrank.

The boxwood leafminer is considered to be the most serious pest of boxwoods. It occurs from the Atlantic to the Pacific, wherever boxwoods grow. All varieties of the boxwoods are attacked; however, the slower-growing English varieties are less susceptible than the American varieties.

Sp290-W-Euonymus Scale, The University Of Tennessee Agricultural Extension Service

Home Garden, Lawn, and Landscape

Euonymus scale, Unaspis euonymi (Comstock), is the most reported insect pest of euonymus, pachysandra and American bittersweet species in the Southeast. Other known host plants for this insect include hollies, camellia, twinberry, boxwood, Daphne, English ivy, hibiscus, jasmine, privet, honeysuckle, Pachistima and Prunus. Winged euonymus is usually free from this scale.

Sp341-N-The Eastern Tent Caterpillar And Its Control, The University Of Tennessee Agricultural Extension Service

Home Garden, Lawn, and Landscape

Nests or tents of the eastern tent caterpillar are a part of the landscape along fence rows and in trees in many parts of Tennessee. This insect has become an increasing problem as more subdivisions spring up in rural areas.

Sp290-S-Mealybugs On Ornamentals, The University Of Tennessee Agricultural Extension Service

Insects, Pests, Plant Diseases and Weeds

Mealybugs are worldwide pests of ornamental plants grown indoors and outdoors. Both greenhouse and field-grown ornamentals are commonly attacked.

Damage to ornamentals occurs when mealybugs insert their needlelike mouthparts into host plants and suck out the sap. Heavy infestations often result in the disfiguration of the plant. While feeding, the mealybug excretes honeydew, a sweet sticky liquid. Infested plant parts darken due to sooty mold growing on the honeydew. Ants may also feed on the honeydew. Some species of mealybugs inject a toxin into the plant while feeding. This toxin causes the plant to drop buds and leaves.