The effect of several plant extracts on postharvest management of stored pistachio nuts infected by Plodia interpunctella Hb.
Ali Alizadeh, Masood Khezri, Aziz Kharazi Pakdel, and Mohammad A. Samih
Abstracts of 27th International Horticultural Congress & Exhibition (IHC 2006), August 13-19, 2006, COEX (Convention & Exhibition), Seoul, Korea. 494 pages.
2006
บทคัดย่อ
Hygienic postharvest management of nut crops during storage is important to ensure product safety for export of pistachio nuts so as to guarantees the successful competition in international markets.To achieve this it is necessary to control insect pests in storage.Stored pistachio nuts are very susceptible to some pests including the polyphagous Indian meal moth, Plodia interpunctella Hb, an important pest exisiting in tropical and semitropical regions of the world; infesting larva decrease the qualitative and quantitative quality of pistachio kernels.Alcoholic extracts of leaves and stems of Cuminum cyminum, the bulb of Allium sativum, and leaves of Achillea millefolium were evaluated on the rate of egg-laying in female insects on the ‘Ohadi’ cultivar using a growth chamber at 25°C, 60% RH and a 16:8 (L:D) photoperiod, using a completely randomized design (CRD).Several extract concentrations (30, 60, 90, 120, 150 mg/disk) were compared with untreated controls.Application of the extracts had significant inhibitory effects on the rate egg-laying of this pest (p<0.05).Maximum inhibition on rate of egg-laying occurred with extracts of Allium sativum, which was greater than Cuminum cyminum that in turn was greater than Achillea millefolium.