Information is presented in 19 tables dealing with the importance of 222 arthropod pests and 170 weeds of agriculture in Myanmar. The distribution and importance of the arthropod pests in the 14 agricultural regions of Myanmar is also given. A simple 4-level rating system was adopted to assess relative importance in 10 crops or groups of crops. This indicated that there were 44 arthropod pests of major importance in most years. The most important of these, in decreasing order, are Spodoptera fitum, Helicoverpa armigem, Agrotis ipsilon, Spilarctia obliqua, Thrips palmi, Aphis gossypii, Odontotermes spp., Agrotis segetum, Boctrocera cucurbitae, Bactrocera dorsalis and Sdrtothrips dorsalis. The most important weeds, in alphabetical order, are Amoranthus spinosus, Cyperus iria, Cyperus rotundus, Echinochloa colonum, Fimbristylis miliacea, Impemta cylindrica, Leucas cepha/otes, Mimosa pudica, Mitracarpus villosus and Trianthema portulacastrum. This information is designed to assist in establishing priorities for control projects.
