Pests of guava
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The document details various pests that affect guava, including the guava fruit fly, bark eating caterpillars, sap feeders, green scale, tailed mealy bug, spiraling white fly, and fruit borer. Each pest is associated with specific causal organisms, symptoms, and suggested management practices such as pesticide application and removal of infected parts. Effective management strategies are essential to minimize damage and ensure healthy guava production.
Pests of guava
- 2. DIFFERENT PESTS OF GUAVA GUAVA FRUIT FLY BARK EATING CATERPILLARS SAP FEEDERS GREEN SCALE TAILED MEALY BUG FRUIT BORER
- 3. GUAVA FRUIT FLY Causal Organism-Bactrocera diversus SYMPTOMS Discolored semi liquid mass Oviposition punctures on fruits Maggots destroy & convert pulp into a bad smelling ones MANAGEMENT Collect & destroy fallen fruits Use of Malathion @0.05% Summer plough to expose pupa
- 4. BARK EATING CATERPILLARS Causal Organism-Indarbella spp. SYMPTOMS Young trees may succumb to the attack Caterpillars bore into the trunk Caterpillars remain hidden during day time & come out at night MANAGEMENT Remove & destroy dead & infected branches Scraping the loose bark to prevent oviposition by adult beetles Apply carbofuran 3G 5g per hole & plug with mud
- 5. SAP FEEDERS Causal Organism-Tea mosquito bug SYMPTOMS Corky scab formation on fruits Elongate streaks & patches develop on shoots Brownish black necrotic patch develop on foliage Nymphs & adults make puncture on petiole,tender shoots & fruits MANAGEMENT Collect & damage the infected part Use of malathion 50 EC @ 0.02% at bimonthly interval at the time of flowering
- 6. GREEN SCALE Causal Organism-Coccus viridis SYMPTOMS Yellowing of leaves Nymphs & adults suck sap from the leaves MANAGEMENT Prune & destroy the infested shoots at initial stage of infestation Spray monocrotophos @ 1ml/lt Realising predators beetle viz. C.montrouzieri beetle Encourage parasitoides viz. C.bogoriensis
- 7. TAILED MEALY BUG Causal Organism-Ferrisa virgata SYMPTOM Premature dropping of fruit MANAGEMENT Release Cryptolaemous montrozieri beetle @ 10/tree Application of trizophos 2ml + neem oil 5ml/lt
- 8. SPIRALING WHITE FLY Causal Organism-Aleurodicus dispersus SYMPTOMS Yellowing of leaves Dropping of affected leaves Nymphs & adults suck sap from the leaves MANAGEMENT Field sanitation Removal of host plants Installation of yellow sticky traps Application of trizophos 40 EC@ 0.06%
- 9. FRUIT BORER Causal Organism-Congethes punctiferalis, Deudorix isocrates, Rapala varuna SYMPTOMS Caterpillar bores into young fruits Fruits dry up & fall without ripening MANAGEMENT Collect & destroy damaged fruits Clean cultivation Application of malathion @0.1%