Four rootstocks were released this winter where they join seven others in the stable of Geneva apple rootstocks. Three of the new ones are more vigorous and larger than Malling 9, and one is in the size class with the M.9 Pajam 2 clone, which is slightly more vigorous than the popular M.9 T337 so many growers are planting. Dr. Gennaro Fazio, the USDA Agricultural Research Service plant breeder who has headed the program in Geneva, New York, since 2001, described the new rootstocks. The Geneva program, which began in 1968, has focused its efforts on finding replacements for the […]
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