Monday, April 15, 2013

How to prevent Insect from rose plant

There are various  insect pests we see in the rose plants. here I describe them and also tell you the way how to prevent them

1. Aphids
Aphids are very common pests. Aphids are soft-bodied insects that can be red, green, yellow, or black. They feed on very young succulent shoots, causing distortion.
Aphids are often kept in check by natural predators. Alternative control measures include the use of insecticidal soaps, strong streams of water to knock them off the plant, or insecticides.











2. Japaneses Beetles 
These hard-shelled, metallic-green, black, and gold insects can cause extensive damage to roses just by their sheer numbers and voracious appetite. They prefer flowers and flower buds but will also attack foliage.
Japanese beetles are difficult to control because they are strong fliers and constantly reinvade the area. Home gardeners still find that Sevin provides the best control, but it is only topical. This means that reapplication needs to be done on a regular basis to protect the foliage and flowers. Beware of Japanese beetle traps. Traps are almost too effective and will draw a great number of beetles into an area, making the problem worse. If they are used, they should be placed in areas away from the rose garden. Hand picking is also a suggested control for small numbers of beetles.

3.Leaf cutter bees



It is unusual to see the insects at work, but they make their presence known by the perfectly round holes cut near the edges of the leaves. These leaf pieces are used to make egg partitions inside their burrows. The damage they cause is strictly cosmetic and warrants no control.




4. spider mites 
Mites are very tiny relatives of spiders. They can be red, black, or brown in color. Mites pierce the underside of rose leaves and suck sap, causing the leaf to turn gray or bronze.
A fine web is a sign of a heavy infestation. Mites reproduce rapidly, resulting in high populations in a short time. Mites flourish in crowded, stagnant gardens. A high-pressure washing with water from a garden hose directed to the underside of the leaves every 2-3 days can manage mites. This will interrupt their life cycle. Miticides such as dicofol help in heavy infestations. Insecticidal soaps are also effective in controlling mites.


5. Thrips
Thrips are extremely small, brown insects usually living and feeding inside of the blooms. A deformed flower with flecked or scratched petals is usually a sign of a thrips problem. The rasping mouth parts of thrips causes this injury when they scratch the petal surface to feed. Thrips are especially attracted to yellow or light-colored roses. Some control can be achieved using materials such as orthene, malathion, or insecticidal soap, but even these often give poor results. They tend to be worse during late June, July and August when temperatures are warm.

6. Rose Midge 




The rose midge is a tiny fly that lays eggs in the buds and shoots of roses. The larvae that develop start feeding and causes bent, mishapen or blasted flower buds and withering of the stem tips. Eventually they turn black. Control consists of pruning out buds and applying insecticide if the problem persists. Midge damage usually shows up in July. Because the larvae fall to the soil to pupate, an effective control is to place weed barrier fabric under the plants to catch the larvae and prevent them from entering the soil to pupate

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