PEST MANAGEMENT DECISION GUIDE: GREEN AND YELLOW LIST acerata Prevention Monitoring Direct Control Direct Control Restrictions

l Early planting and harvesting, e.g. plant in May (1st planting) l Look for adult l Use sweep nets to capture adult l Use less l WHO Class II or August (2nd planting) and harvest after three months for Sweet potato hazardous (Moderately improved varieties e.g. SLIPOT1,2,3 obtained from SLARI, butterflies, l With hand gloves, collect larvae insecticide e.g. hazardous); NB; Njala especially in the and destroy by crushing them chlorpyrifos (70 Always use l Use clean and unaffected vines preferably obtained from the dry season outside the field ml in 5 lit of protective gears water and spray e.g. Goggles; middle to the top of the plant l Look for caterpillars l Prune older leaves to allow Caterpillar of the sweet potato feeding on leaves witha knapsack Overalls; Rain butterfly (Nicole E.J.M. Smit, l Intercrop sweet potato with onion or Silver leaf (Desmodium enough sun light to discourage sprayers) boots etc.; 48 Lucid keys) sp.), if available l Check for young egg laying and if eggs already Hrs exposure; l Earthen the soil to prevent egg laying and larval movement caterpillars by laid, the excessive heat of the 2-3 Hrs aeration looking underneath sun will destroy them l Destroy caterpillar infested weeds around plots the leaves

Sweet potato butterfly (David Agassiz)

Caterpillars feed on leaves (N Smit, Lucid keys)

Sierra Leone CREATED/UPDATED: September 2013 AUTHOR(S): Pastor Saffea J. Torto (National Agricultural Training Centre / NU), James D. Spencer (MAFFS), Fanny Kpana (MAFFS), IMO Shamie (MAFFS) EDITED BY: Plantwise

LOSE LESS, FEED MORE Plantwise is a CABI-led global initiative www.plantwise.org ©CAB International. Published under a CC-BY-SA 4.0 licence