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Fig. 3 | CABI Agriculture and Bioscience

Fig. 3

From: A comparison of new and existing rootstocks to reduce canker of apple trees caused by Neonectria ditissima (Nectriaceae, Hypocreales)

Fig. 3

The association measured using Kendall’s rank correlation coefficient (τ) between apple trunk circumference and rootstock A canker, scion B canker and peripheral C + D + E canker numbers in 2020 in the experiments in Kent and Gloucestershire, respectively. Kendall’s rank correlation coefficient (τ) for each variable are displayed on graphs. It is a measure of rank correlation, the ordinal association between the two variables represents the binary relation and then normalises the distance such that it will take values between − 1 and + 1

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CABI Agriculture and Bioscience

ISSN: 2662-4044