sources of solving plant problems
University of florida institute of food and ag sciences, cooperative extension service, and Florida's department of Agriculture and consumer services of plant industry.
characteristics of life cycle on a plant pest
insects hatch eggs on food supply, sometimes they hatch on the body of a female, and go through metamorphosis.
pray on aphids, cales, mealbugs, mites, and other soft bodes insect pests.
have uprised legs that pray on flies, honeybees, crickets, and moths.
attack caterpillar on foliage.
prevent larva from praying each other by attaching its legs.
lay their eggs on or in the body of a host insect and the immature stage consumes the host's tissues over a period of time, eventually killing it.
small soft bodied pear shaped insects with sucking mouthparts. such plant juices and transmit viral diseases.
have piercing-sucking mouthparts that puncture the lead and such plant juices. may leave chlorotic spots.
are the immature or larval stage of moths and butterflies. They devour the foliage, leaving holes and irregular area, or they may strip leaves entirely.
deposit egges clumped together in ponds in the soil. Will disperse when favored food plants are depleted, moving into nearyby crops.
plant feeding insects the chew off parts of the foliage or flowers of many plants.
damage leaves from infestations that cause leaves to turn yellow, spott, and eventually drop.
infest leaves and turnit stunted and deformed.
(1)pine bark beetles, which bore in the inner bark and feed on the cambium.(2) Borers that burrow in small limbs or twigs, and (3) borers that burrow deep into the trunk.
are pests around home because they feed on and contaminate human foods, infest structures, and build unslightly mounds in lawns.
slugs and snails
the slivery mucous trails confirm slugs or snails, not lacewings, caterpillars, or other chewing insects, caused the damage.
southern chinch bugs
withdraw plant sap, causing yellowish to brown patches in the turfgrass.
scale like insects released to mealy bugs tht live in the soil. The female lays about 100 eggs. And turns the grass from yellow to brown.
creamy white and extremely tiny body causes the grass blades turn light-green and curl abnormally. The internodes shorten and tissues swell. The grass becomes tuffed and thins out. Injury is more pronounced during dry weather, especially when the grass is stressed.
damage turfgrass, fall armyworm pupate in the soil, feedy during the day and occur earlier in the year.
they damage all grasses, but bahia and bermuda grasses are their favorite hosts. Their damage is primarily mechanical. They turn all through the soil near the surface, service roots and uprooting the grass.
whitish with a brownish head and three pairs of small legs larvae are fat grubs which lie in c shapped position. In infected areas the grass consistently wilts, and mosaic areas of yellow and green grass develop. The adult lay eggs in the soil. Grubs live in the soil and feed on roots.
Name and describe characteristics of the major groups of organisms which commonly cause ornamental plant diseases.
they are divided into insects that have piercing-sucking mouthparts and chewing pests or foliage- feeding insects.
affected areas are distinct circular patches. Leaf pulls out of Leaf Sheath very easily.
are divided into helminthosporium Leaf Spot, Gray Leaf Spot, and Cercospora Leaf Spot.
helminthosporium leaf spot
primary on bermudagrass and ryegrass. Leaf spots have wide range os sizes.
Gray Leaf Spots
primarily on St. Augustinegrass in summer. Leaf spots oval to irregular with brown borders and tan to gray centers.
primarily on St. Augustine grass in late spring and summer. Narrow, dark brown leaf spots initially, then become oblong, irregular spots with dark tan centers with brown borders.
patch areas are less than 3 inches in diameter. Leaf spot lesions present.
pythium rod rot and/or Nematodes
Grass chlorotic (yellow) or has motted leaves associated with general decline.
take all root rot
affected areas irregular patches of 8 to 24 inches diameter or larger with mixture of yellow and dead grass roots are short and black. Stolons may ne rotted also.
orange "spots" present on leaves, "spots" rub off easily.
Grass covered with an easily removed slimy or crusty growth.
describe a plant parasitic nematode and describe its life cycle
plant parasitic nematodes have a fairly simple life cycle with six stages: eff, four juvenile stages, and adult.
describe symptoms of nematode damage on ornamental plants
foliage loses its luster and wilts more readily than it should. Woody plants may even suffer twig dieback if stress continues. Root knot and folar nematodes cause strange grow.
sting nematode, stubby root nematode, spiral nematode, awl nematode, lesion, sheath, stunt, sheathoid nematode, and dagger nematode
affect all grasses.
lance nematode, st. agustine cyst, and root knot nematode affect
affect st. Augustine turfgrasses
affects centipede grasses
root knot nematode also affects
bermuda and zoysia
weeds may be classified as
grasses, broadleaves, and sedges. Weeds like perennials weeds tend to dominate among the perennial forage crops. They interrupt vegetative cycle.
tending to cause harm
name the major groups (classifications) of weeds
sedges, broadleaf, annual, biennal, and perennial.
integrated pest management
is an approach to managing insects, mites, pathogens, nematods, weeds, and other pests by combining a variety of strategries and pest management tactics. It utilizes the most appropriate cultural, biological strategies for managing plant pests.