CONTRIBUTIONS FROM THE WISLEY LABORATORY. 103 



Table IV. — ' Ribston Pippin ' on Crab Stock. 



Trees pruned season of planting. 



Trees not pruned season of planting. 



Tree No. 



Growth made in — 



Tree No. 



Growth made in — 



1912. 



1913. 



1914. 



1912. 



1913- 



1914. 



721 

 722 

 723 



ft. in. 

 16 8 

 8 II 

 II 9 



ft. in. 

 38 O 

 23 6 

 32 3 



ft. in. 

 87 II 



80 6 

 82 0 



726 

 728 



ft. in. 

 8 8 

 II O 



ft. in. 

 30 O 

 40 O 



ft. in. 

 86 3 



no 9 



Total 

 growth 



37 4 



93 9 



250 5 



Total 

 growth 



19 8 



70 O 



197 0 



Average 

 growth 

 of three 

 trees 



12 5i 



31 3 



83 6 



Average 

 growth 

 of two 

 trees 



9 10 



35 0 



98 6 



In this case the growth of the pruned trees in the first year was in 

 excess of that of the unpruned, but to a less marked extent than in the 

 trees of the same variety on Paradise stock, while in the second and 

 third years the trees which were not pruned after planting slightly 

 outpaced those which were pruned, so that at the present time there is 

 little difference in the two sets. 



Table V. — ' Christie Manson ' on Crab Stock. 



Trees pruned season of planting. 



Trees not pruned season of planting. 



Tree No. 



Growth made in — 



Tree No. 



Growth made in — 



1912. 



1913. 



1914. 



1912. 



1913- 



1914. 



724 

 725 



ft. in. 

 20 4 

 IO IO 



ft. in. 

 48 9 

 37 6 



ft. in. 

 146 2 

 52 0 



729 

 730 



ft. in. 

 9 9 

 17 II 



ft. in. 

 42 6 

 37 0 



ft. in. 

 I08 O 

 112 O 



Total 

 growth 



31 2 



86 3 



198 2 



Total 

 growth 



27 8 



79 6 



220 O 



! Average 

 growth 

 of two 

 trees 



15 7 



43 I* 



99 1 



Average 

 growth 



of two 



trees 



13 10 



39 9 



no 0 



These trees show results similar to those in Table IV. on Crab 

 stock, except that the slight superiority in growth of the pruned over 

 the unpruned was maintained into the second season. 



The results given by 1 Peasgood's Nonesuch ' on Crab as set out in 

 Table VI. below contrast with those given by the same variety on 

 Paradise (Table III .) . The difference in growth between the two sets in 

 the first season was in favour of pruning in the season of planting 

 in both cases, but far less markedly so with the trees on Crab stock, 



