Scales are small, sap-sucking insects, Scales are named for their hard, protective outer shell, which can be waxy or armored. This shell helps to protect them from predators and the environment. Rose scales feed on the sap of rose plants. They insert their piercing-sucking mouthparts into the stems and leaves of the plant, and then suck out the sap. This can cause the leaves to turn yellow and drop off, and can also stunt the growth of the plant. In severe infestations, rose scales can kill rose plants.
Scientific name: Lindingaspis rossi
Type: sucking pest
Target: Stem and Leaves
Damage: Curling of leaves and Damage on stem
Identification:
- Yellowing of leaves
- Stunted growth
- Wilting of the plant
- Sticky residue on the leaves (honeydew)
- Presence of adult female rose scales, nymphs, and crawlers on the plant.
Environmental favorable factors for pests/Diseases:
Temperature: Most scale insects prefer warm temperatures (between 70-85°F) and dry conditions
Humidity: Roses need regular watering, especially during hot and dry weather. Water stress can weaken the rose plant and make it more susceptible to scale infestations.
Symptoms of Pest/Disease:
Presence of scale insects: They appear as small, immobile bumps on the stems, canes, and undersides of leaves. These bumps can be white, gray, brown, black, or yellow, depending on the specific scale species.
Yellowing leaves: As scale insects feed on the sap of your roses, they can weaken the plant and cause the leaves to turn yellow.
Sticky residue: Scale insects excrete a sweet, sticky substance called honeydew. This honeydew can attract other pests, and it can also promote the growth of sooty mold.
Stunted growth: If your roses are heavily infested with scales, they may not grow as tall or as bushy as they normally would. The stems may also be thinner and weaker than usual.
Wilting: In severe infestations, scales can cause the entire rose plant to wilt and die.
Measures to control Pests/Diseases:
| Products |
Technical Name |
Dosage |
| MAL50 |
Malathion 50 % EC |
250-300 ml per Acre |
| TRIPLE ATTACK |
|
2 Liters of Solution Per Acre. |
| K- Acepro |
Acetamiprid 20 % SP |
60 to 80 grams per acre |
