. Department bulletin. COMPARATIVE DEVELOl'MKNT OF FKUIT IJUDS AND SITKS. 101 diu'liiti* th('s(^ fruit spurs lor (lie followinjjf ycMir. wliilc tlio uns])riiy(Hl troos lijid l)()iMu* l>ut i'('W pcai'lics. 'l\n\ i'jicls lie re, cliscusstnl are sliown in tlio tji))lo (hat follows. T.\HLK 20.—(rain In iiKmlur (if s/mr liiah on sprdijcd urcr unsjirayed trees. Trees. lic'i' Lenjrtli of old wood, mejisured in inches, on sprayed and tinsprayctl Total mnnbor of spurs ." Number of sjtur buds, estimated at 3 buds per spur Averajje numbiT of spurs per inch AveraKi' number of spur b
. Department bulletin. COMPARATIVE DEVELOl'MKNT OF FKUIT IJUDS AND SITKS. 101 diu'liiti* th('s(^ fruit spurs lor (lie followinjjf ycMir. wliilc tlio uns])riiy(Hl troos lijid l)()iMu* l>ut i'('W pcai'lics. 'l\n\ i'jicls lie re, cliscusstnl are sliown in tlio tji))lo (hat follows. T.\HLK 20.—(rain In iiKmlur (if s/mr liiah on sprdijcd urcr unsjirayed trees. Trees. lic'i' Lenjrtli of old wood, mejisured in inches, on sprayed and tinsprayctl Total mnnbor of spurs ." Number of sjtur buds, estimated at 3 buds per spur Averajje numbiT of spurs per inch AveraKi' number of spur buds per inch Gain in favor oi sprayed trees per cent. Besides conipariug the number of fruit buds produced in 1893 by the sprayed and unsprayed trees, it is desirable to contrast the bud- producing al)ilities of the upper and lower })ortions of these trees. It is generally conceded as desirable that the crop of a peach tree should be borne as largely as possible upon the lower limbs, and an}^thing tending to this result ma}^ prove of value. Peach leaf curl, being due to a fungous parasite, has a tendency to do more injur}^ to the lower than to the upper portions of the trees affected. The atmospheric con- ditions are more favorable for the germination of spores and to fungous growth in the lower and more shaded portions of the tree, and the lower branches accumulate greater numbers of fungous spores than the upper branches. In the following table it is shown that the total number of fruit buds produced by the lower limbs of the sprayed trees was 7 per cent greater than the number produced b}^ the upper limbs, com- paring equal lengths of new wood in each case. On the unspraved trees, however, the upper limbs produced 5 per cent more fruit buds per linear unit of new wood than the lower limbs. This shows a difference of 12 per cent in favor of the sprayed trees. The tabulated tiofures are as follows: Table 21.—Gain in total number of fruit buds' on lower limbs of sprayed tre
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