It is vitally important to improve the efficiency of crop pollination so that yields are increased. This issue of Bee World carries articles on the pollination of two crop plants-kiwifruit and swede rape-and heralds the publication by IBRA before the end of the year of the Pollination directory for world crops mentioned in no. 1 Bee World. A number of books have been published on insect pollination of crops, but it is still not easy for a grower to find details about a specific crop. The crop may be self-pollinated, in which case the grower has nothing to do. Or it may be cross-pollinated by wind or by insect, in which case he may need to adapt his planting plan to the plant's pollination requirements. Very often he must provide extra pollinating insects.
