Malling 9 rootstocks, shown in layer beds at Willow Drive Nursery, Washington, have proven to be the most efficient rootstocks in most regions. The various clones differ considerably in size, with 337 among the smallest and Nic.29 the largest. This is the second of a series of articles covering all aspects of planning and establishing a competitive orchard. by Tom Auvil, Washington Tree Fruit Research Commission Size-controlling rootstocks that offer resistance to pests and diseases are here now, with some commercially available for planting or soon to be commercialized. Rootstock trials conducted by the Washington Tree Fruit Research Commission in collaboration […]