Efficacy of some carbaryl mixed baits in mass luring and killing of sunflower and sorghum infesting Pachnoda interrupta (Olivier) (Coleoptera: Cetoniidae)

Tag Elsir E. Abdalla

Abstract


The sorghum chafer Pachnoda interrupta Olivier (Coleoptera: Cetoniidae) has become a new potential serious pest of sunflower, sorghum and millet in Sudan (Abdalla et al., 2012; 2013) and no measures are known at present for its control. It is present in the semi-arid parts of Africa, which are subjected to seasonal variation in rainfall and temperature, mainly in the Sahel and Sudan ecoregions (Schmutterer, 1969; Grunshaw, 1992; Jago, 1995; Sastawa and Lale, 2000). In the Sudan, Pachnoda genus has six occasionally reported species; P. interrupta Olivier, P. marginata (Drury) var. zonaria, P. cordata (Drury), P. sinuata F., P. discoidalis Moser and P. massajae Gerst. Among them, P. interrupta is the only species that attained the “pest” status recently in Sudan (Abdalla et al., 2013). According to Abdalla et al (2012), P. interrupta caused disc damage to the sunflower hybrids: Pan 7351, Pan 7033, Pac 361, Hysun 33, ARC 310, Sirena and Pac 317, in a range of 1.0% - 84.8%; panicle damage to the sorghum genotypes Jumbo, Pannar, Kambal and Sugar graze of 0.6%, 1.8%, 99.7% and 96.7%, respectively, and panicle damage to the millet genotypes Ashana, Ugandi and a local millet hybrid in a range of 98.2%-98.8%. Clarke and Crowe (1978) stated that P. interrupta can become a serious pest of sorghum heads when failed / delayed rainy seasons occur. Jonas et al. (2009) reported P. interrupta as a key pest of sorghum and sunflower, causing 58%-71% reduction of sorghum yield in Ethiopia. Yitbarek and Hiwot (2000) reported that P. interrupta eats immature grains of some crops, hampers fructification and seed setting, and causes sorghum yield loss of up to 70% in severely affected areas.

 


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