Thursday, June 9, 2011

Pest of Rose


There are several common types of pests that attack roses, types, symptoms follows:

1. Aphids (Macrosiphum rosae Linn., Aphids)

Aphids have a characteristic small, ± 0.6 mm long, green, sometimes with wings. These types of lice attacking the shoots, and often attached to the twigs and flower buds.
Symptoms: Aphids suck fluids (cell) plant, causing abnormal symptoms, the leaf or shoot so curly / shrink. Can act as vectors of viruses and often leave the sweet liquid honey that sticks to the leaf surface, so that a disease-causing soot dew (Capnodium sp.).

2. Beetle
In general there are three (3) types of beetles attacking roses: Chafer beetles (Macrodactylis subspinosus), Fuller (Autoserica castanca) and Curculio (Rhyncite bicolor).
· Chafer Beetle yellowish brown body length of about 12 mm
· beetle Fuller grayish brown color, length 10 mm.
· Curculio beetle red black striped ± 5 mm.
Symptoms: eat the leaves, stems and flowers. The larvae often eat the plant roots.
 
3. Snail fur
Characteristics are: body greenish white, ± 12 mm long, covered with coarse hairs.
Symptoms: in the larval stage, invasive plants by eating leaves of the rice field which causes the leaves to bone perforated leaves.
Control: performed by eroding cocoon attached to the plant.
 
4. Mite (Tetranychus telarius)
Similar to spider mites, very small ± 0.3 mm, red / green / yellow. Multiply rapidly if the weather is humid and hot, and air circulation is poor. Symptoms: mites attack plants by sucking plant cell fluids, on the leaves / shoots, causing the red dots are yellow / gray brown.

5. Thrips
Pests of this type is very small ± 1 mm, color brown.
Symptoms: thrips damage / suck liquid plant cells, especially flowers, leaves and branches. These pests like yellow rose / other bright. Control: is done by pruning the plants that are heavily infected.
 
6. Root nematodes (Meloidgyne sp.)
Root nematodes are very small size (only visible with a microscope). Symptoms: These nematodes attack the roots of the rose plant, can penetrate into the shaft causing the symptoms of stunted growth, sometimes wilt (loss of strength to grow) and there is a pimple on the roots. Control: crop rotation, planting medium sterilization.
 
7. Other pests:
a. Leaf caterpillar (Udea rubigalis), attacking the leaves and flower buds that become damaged / perforated-perforated.
b. Insects night (Night Insect feeding), attacking the leaves and flowers.
Control: sprayed with insecticides used to control leaf caterpillar.
c. Sucking insects of plant cells (Leaf hoppers), attacking the leaves until the white spots in a circle.
Control: sprayed with insecticides used to control leaf caterpillar.
d. Flies (Dasyncura rhodophaga), small body size of 1.2 mm, color brown. Eggs laid on new shoots, after the larvae will destroy / eat the shoots. Larvae dropping to the ground, then within
e. Flea stem (Aulacaspis rosae) of the family Coccidae, small size 3 mm,
Symptoms: suking liquids plant cells, the leaves and stems. The part that fell ill will wither, gradually dried (dead). Control: trim the affected plants to be destroyed / burned
f. Small beetles (Small Carpenter bees), small body size 8 mm long, black-metallic,
Symptoms: punch at the same time damaging the inner shaft. Plants that are attacked by the wilt.
 

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