The principle objective of this PHYTOGUIDE is to assist member countries and sub-regional/regional organizations in endorsing, but perhaps more importantly, adopting minimum but practically implementable phytosanitary standards in the export, import and transshipment of agricultural commodities. The focus has been directed towards curtailing/retarding the further spread of the "Larger Grain Borer" Prostephanus truncatus (LGB) in maize consignments traded throughout eastern, central and southern Africa. However, the Phytosanitary Standards that have been compiled in the PHYTOGUIDE are adoptable to a range of cereal commodities traded or swapped in the region, and has therefore, much wider application. The widespread utilization of this PHYTOGUIDE will assist in preventing further accidental introductions of quarantinable insect pests, as well as providing the basis for general improvements in quality with regards to the more cosmopolitan (but not quarantinable) stored products pests often encountered in regional trade.