Apple Rootstock Testing and NC-140


What Is NC-140?

NC-140 is a north central regional project, funded by the USDA, that  meets the guidelines presented by the North Central Regional Association (NCRA) in Guidelines for Multistate Research Activities. This project was established, under different names, in the 1960s by a group of horticultural researchers from across the United States and Canada to evaluate horticultural uses of rootstocks. In the mid 1970s, NC-140 was officially created and focused solely on apple rootstocks.

Prior to these national/international projects, …

What experimental rootstocks for apples are being looked at in the U.S.?

Many apple rootstocks are being evaluated for potential use in the United States by the NC-140 Multi-State Research Committee. These rootstocks have come from breeding programs in the United States (CG, G), Great Britain (M), Germany (PiAu and Supporter), Poland (P), Czech Republic (J-TE), Japan (JM), and Russia (B). Specific rootstocks that are currently under evaluation in NC-140 plantings include the following: B.9, B.10, B.7-3-150, B.7-20-21, B.67-5-32, B.64-194, B.70-6-8, B.70-20-20, B.71-7-22, G.11, G.16, G.41, G.202, G.935, CG.2034, CG.3001, CG.4003, …