Article Index
LEMONGRASS
1. Medicinal Properties & Use
2. Botany & Varieties
3. Chemical Constituents
4. Types
5. Improved Varieties
6. Soil & Climate
7. Propagation
8. Planting & Aftercare
9. Pest & Diseases
10. Harvest & Processing
11. Distillation
12. Purification & Storage
13. Seed Harvest
All Pages

Pest & Diseases

Pest Stage of pest/symptom of damage Management measures
Termites Drying of clumps Localised drenching of chlorpyriphos 2-3 ml /L

Mealy bug

Dysmicoccus brevipes / Pseudococcus bromeliae

Adults and nymphs seen colonizing near base of the clumps esp. during dry months,

sucking of juice cause drying of clumps

Sanitary measures are to be adopted. The plot should be kept weed free.

Remove and destroy all dried up clumps.

Localised application of neemoil garlic emulsion (2%) in affected areas

Stem borer

Chilotrea sp. (Lepidoptera: Pyralidae)

Caterpillar – death of tillers Spray mercaptothion 50EC @0.2%

Spittle bug

Clovia bipunctata Walk. (Hemiptera: Cercopidae)

Adults and nymphs – stunted growth Not a serious pest

Nematodes:

Tylenchorhynchus vulgaris

Rotylenchus reniformis

Helicotylenchus spp.

Pratylenchus spp.

Adults and nymphs – root damage causing stunted growth Not serious

Disease Causal organism Management measures

Little leaf

Leaves become smaller in size and flowers in inflorescence get converted to very small leaves

Virus

Destruction of affected plants to reduce spread of disease

Avoid collecting seeds from such plants.

Control of vectors

Leaf rust

Elongated, stripe like, dark brown lesions develop on both sides of leaf surfaces

Puccinia nakanishikii Spray any contact fungicide such as Mancozeb 0.3% or Zineb 0.3%
Leaf spot (eye spot)

Helminthosporium

cymbopogi

Spray BM 1% or COC 0.2% or zineb 0.3% thrice at 15 days interval
Blights
Curvularia Leaf Blight (CLB) Curvularia andropogonia Spray Bordeaux mixture (BM) 1% or Zineb 0.3% or Mancozeb 0.2-0.3% thrice at 15 days interval
Leaf blight Rhizoctonia solani
Grey blight Pestalotiopsis magniferae
Collar rot Spray BM 1% or COC 0.2% or Zineb 0.3% thrice at 15 day interval