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Caption: Board of Trustees Minutes - 1873
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90 The longest growth and largest per cent, of living grafts were on the six inch roots, not taking into account the roots three times larger than the cion, from which we get no averages, and the length of growth and percentage of living grafts diminish pretty regularly as the length of root diminishes. Comparing different cuts of cions, we find that the first, or but cut, makes the longest growths ; but the second cut the largest percentage of living grafts. Comparing cuts of roots, the first, or collar cut, makes the longest growth, and the second shows the largest percentage of living grafts. In 1871, similar experiments were made with the same variety of Apple. We have below a comparison of the growths, etc., of the two years : Growth, inches, 1871. Growth, inches, 1872. P e r cent, P e r cent, living, living, 1871. 1872. Second c u t of cion F o u r inch roots One a n d a half i n c h r o o t s 12.51 11.50 9.63 1281 12.98 8 96 15-48 17.63 11.58 22.00 21.17 20.44 20.95 22 61 21.00 18 60 27.75 24 50 22.83 20.93 52-00 6300 55.00 72 00 60 00 45 00 65 00 75 00 40 00 20.00 66 66 83.33 55 00 66.66 73 33 70 00 85 00 75.00 70 00 60.00 The length of growth and percentage of live grafts was much greater in 1872 than in 1871, which was a very dry and unfavorable year, As in 1871, so in 1872, there appears to be very little difference between the first and second cuts, both of root and cion, and further experiments are necessary to determine which is practically the best. The comparison of roots of different lengths shows that the experiments of 1872 give much more uniform and apparently reliable results. "We are probably safe in saying that, planted under the conditions given, the longest rooted plant would give the best results ; not so much in greater length of growth, however, as in the larger percentage of living plants. Mr. Vickroy observes that in 1872— and the same was probably true in 1871—that grafts planted at a shallow depth started sooner and made a better growth than when they were planted deeply. This observation, no doubt, explains the remarkable growth of cions on short roots. AVERAGES PROM GRAFTS OF 1871 CONTINUED THROUGII 1872. Growth, inches, 1871. Growth, inches, 1872. P e r cent. P e r cent, living, living, 187f. ' 1872. B u t , or first cion Collar, or first r o o t Collar, or f o u r t h r o o t 12.51 11.59 9.63 11.35 12.81 12.98 8.96 8.21 38.46 36 00 33.93 34.62 40.98 41.50 36.66 25.33 52.00 63.00 53.00 40.00 72.00 6000 45 00 30.00 30 30 26 25 50 15 26 10 00 00 66 00 00 00 66 00 These figures go to show, as the same grafts did in 1871, and as those of 1872, that the nearer the collar of the root and the but of the cion, the better the graft; but with hardly any differencebetween the first and second cuts of either. The averages of the roots of different lengths of the grafts set in 1871, give the following report for their first and second year:
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