Pests of Rose_Identification_IPM_Dr.UPR.pdf

Roses are beautiful plants, but they are susceptible to a variety of pests that can damage their leaves, stems, and flowers. Here are some common pests of roses:

1. Aphids
Description: Small, soft-bodied insects that are usually green, black, or yellow.
Damage: Aphids feed on the sap of roses, causing leaves to curl, yellow, and distort. They can also transmit viral diseases.
Control: Use insecticidal soap, neem oil, or encourage natural predators like ladybugs.
2. Japanese Beetles
Description: Metallic green beetles with bronze-colored wings.
Damage: They feed on rose flowers and leaves, leaving behind lace-like damage.
Control: Handpick beetles, use traps, or apply insecticides labeled for Japanese beetles.
3. Rose Midge
Description: Tiny, fly-like insects that are difficult to spot with the naked eye.
Damage: The larvae damage rose buds, causing them to distort, wither, or fail to open.
Control: Remove affected buds and use insecticidal soap or systemic insecticides.
4. Spider Mites
Description: Tiny arachnids, often red or green, that are difficult to see without a magnifying glass.
Damage: Spider mites suck the sap from the leaves, causing yellowing, speckling, and eventual leaf drop.
Control: Spray with water to remove mites, use miticides, or encourage natural predators like predatory mites.
5. Thrips
Description: Tiny, slender insects that can be yellow, brown, or black.
Damage: They feed on the flowers, causing distorted, discolored petals and scarring.
Control: Use insecticidal soap or neem oil, and remove infected flowers.
6. Whiteflies
Description: Small, white, flying insects that resemble tiny moths.
Damage: Whiteflies suck sap from rose leaves, causing yellowing, wilting, and stunted growth.
Control: Use yellow sticky traps, insecticidal soap, or neem oil.
7. Caterpillars (Rose Slugs)
Description: Larvae of various moths and butterflies.
Damage: Caterpillars feed on rose leaves, causing them to be eaten away, leaving only the skeleton behind.
Control: Handpick caterpillars or use biological control agents like Bacillus thuringiensis (Bt).
8. Scale Insects
Description: Small, immobile insects with a waxy or armor-like coating.
Damage: Scale insects suck the sap of the plant, leading to yellowing and weakened growth.
Control: Scrape off scales manually or use horticultural oil to smother them.
9. Rose Weevil
Description: Small, dark weevils with a distinctive snout.
Damage: The larvae feed on the roots, while adults chew on rose petals and leaves.
Control: Remove affected plant material and apply systemic insecticides.
10. Mealybugs
Description: Soft-bodied insects covered in a white, powdery wax.
Damage: They suck sap, causing leaves to yellow, curl, and become sticky due to honeydew secretion.
Control: Use neem oil or insecticidal soap, and wipe off mealybugs with a cotton swab.
11. Fungus Gnats
Description: Small flies that thrive in moist conditions.
Damage: Their larvae feed on the roots of roses, causing weak or stunted growth

1. Pests of Rose
By
Dr. U. Pirithiraj, P.hD.
Assistant Professor (Entomology)
JSACAT
Affiliated to Tamil Nadu Agricultural University

2. Rose thrips, Rhipiphorothripscruentatus, Thripidae,
Thysanoptera
1
Dr. U. Pirithiraj, P.hD. (Entomology)
Silveringorwhitestreaksappear
ontheinfestedleaves
Leavesshowbrownpatchesand
getdistorted
Infestedflowersdonotopen,
flowersfadeandfalldown
prematurely
Spray methyl demeton2ml (or) phosalone2ml / lit (or) neem oil 3%

3. Rose scale, Lindingaspisrossi, Diaspididae,
Hemiptera
2
Dr. U. Pirithiraj, P.hD. (Entomology)
Reddishbrownwaxyscale
completelycoverthestemand
leaves
Inserverinfestation,thewhole
plantmaydie
Female -wingless comparatively large

4. Rose aphid, Macrosiphum rosaeformis, Aphididae,
Hemiptera
3
Dr. U. Pirithiraj, P.hD. (Entomology)
Bothnymphsandadultsare
foundinclustersonthetender
shoots,flowersandbudsand
suckthesap.
Witheringoftendershoots,
budsfalloffprematurelyand
theflowersshowfading.
Cotton aphid:Aphis gossypiiGlover,Green peach aphid:Myzuspersicae
Spray methyl demeton1ml / lit or neem oil 0.5%

5. Red spider mite, Tetranychusurticae, Tetranychidae,
Acarina
4
Dr. U. Pirithiraj, P.hD. (Entomology)
Theyfeedontheundersurfaceof
leavesandarefoundcoveredwith
silkenwebs.
Yellowspotsappearontheupper
surfaceandleavesturnreddish
duetofeeding.
Affectedleavesfinallywither.
Growthandflowerproductionare
adverselyaffected

6. Castor semilooper, Achaea janata, Noctuidae,
Lepidoptera
5
Dr. U. Pirithiraj, P.hD. (Entomology)
Moth is stout, greyish brown with
black blotches on hindwings
Caterpillars feed voraciously on the foliage
Full grown caterpillar is smooth, dull greyish brown
with white or brown stripes along the body

7. Flower chaffer beetle, Oxycetonia versicolor,
Cetoniidae,Coleoptera
6
Dr. U. Pirithiraj, P.hD. (Entomology)
The beetles feed on buds and flower that result in irregular feeding marks

8. Leaf cutter bee, Megachile anthracina, Megachilidae,
Hymenoptera
7
Dr. U. Pirithiraj, P.hD. (Entomology)
Adultbuildcellsincrevices
andcavitiesinhedges,dead
woodetc.
Leafcutterbeecutstheleaf
margininasemicircular
fashionandusetheleafbits
fortheconstructionnest
cells.
Insecticides are ineffective for preventing leaf cutting.
Cover susceptible plants with cheesecloth for preventing leaf injury damage
Breeding sites should be eliminated

9. Hairy caterpillar, Orgyia (=Notolopus) postica,
Euproctis fraterna, Lymantriidae, Lepidoptera
8
Dr. U. Pirithiraj, P.hD. (Entomology)
Orgyia (=Notolopus) postica Euproctis fraterna

10. Leaf folder, Acleris extensana, Tortricidae,
Lepidoptera
9
Dr. U. Pirithiraj, P.hD. (Entomology)
Acleris sp.