singularis, a optimisation of the colour of the trap can improve S. Despite the low attractiveness of the sex pheromone to S. singularis ocelli are more responsive to light of shorter wavelengths. Trap catches support the hypothesis that S. Reflectance peaks exceeded 100% of the incident light in the 400–450 nm range from the white, suggesting the presence of optical brighteners. Trap reflectance showed wavelength peaks typical for purple in both short (approximately 380–480 nm) and long wavelengths (>650 nm), and ~530 nm for green. sahlbergella male trap catches were observed with all three colours, but the green trap caught more S. During a two-year trial in 15 cocoa plantations in Ayos and Konye, in the Centre and Southwest regions of Cameroon respectively, the most effective colour – white, purple or green – of sex pheromone traps was examined for integration into mirid management programmes. ![]() Sahlbergella singularis is the most common species in Cameroon and was therefore targeted in this study. ![]() Cocoa mirids, Sahlbergella singularis and Distantiella theobroma, are the most economically important insect pests of cocoa in West and Central Africa, where they can cause up to 40% losses in cocoa yields.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |