this study investigated the effectiveness of heat treatment (50°c, 60°c and 70°c for 1 h and 2h at 75-80% rh) and cold treatment (0°c and-5°c for 24h and 48h) in the control of storage pests in zahedi and piyarom dates. before and after each treatment, the number of surviving adults, larvae, pupae and eggs were recorded and the percentage of infestation was calculated. the dates were treated at...

A survey was carried out at Bandirippuwa Estate, Kirimetiyana Estate and at Isolated Seed Garden, Rajakadaluwa for the pests of coconut inflorescence and developing fruits. The mite, Dolichotetranychus sp. (Tenuipalpidae) which lives beneath the perianth and feeds on the epicarp, causes considerable damage to the developing fruit. Bi-monthly observations on the intensity of infestation of nuts ...

A survey was carried out at Bandirippuwa Estate, Kir imetiyana Estate and at Isolated Seed Garden, Rajakadaluwa for the pests of coconut inflorescence and developing fruits. The mite, Dolichotetranychus sp. (Tenuipalpidae) which lives beneath the perianth and feeds on the epicarp, causes considerable damage to the developing fruit. Bi-monthly observations on the intensity of infestation of nuts...