. Plant propagation; greenhouse and nursery practice. fif with asudden jerk rather than a steady pull. Those who usewaxed thread merely cross the last turn or two over theprevious turns and break without tying or passingthrough the notch. The least possible quantity of thread MliTUODS OF 235 of, say, No. 18 or 20 size should be used—just enough tokeep the parts in place until the grafts are planted. Inorder that the thread may decay quickly, it should not bewaxed. Indeed, some propagators contend that bindingis a disadvantage because they claim that as the callusforms and the stem ex
. Plant propagation; greenhouse and nursery practice. fif with asudden jerk rather than a steady pull. Those who usewaxed thread merely cross the last turn or two over theprevious turns and break without tying or passingthrough the notch. The least possible quantity of thread MliTUODS OF 235 of, say, No. 18 or 20 size should be used—just enough tokeep the parts in place until the grafts are planted. Inorder that the thread may decay quickly, it should not bewaxed. Indeed, some propagators contend that bindingis a disadvantage because they claim that as the callusforms and the stem expands the cord cuts the soft tissuesand thus favors the entrance of crown gall and hairyroot (Fig. 182). Therefore, they leave the grafts un-wrapped, but use extra care in fitting the parts Graft wrapping machines are coming into use insome of the larger nurseries because they economizetime and cost and do work said to be superior to handwrapping. In a circular describing the Reed-Bellmachine the following passage (condensed) occurs:. FIG. 191~WH1P GRAFTS WITH TOO MUGH CALLUS An account carefully kept during several weeks of agrafting season shows the machine-wrapped grafts cost,on an average, five cents a thousand for twine, 11 centsfor wrapping, a total of 16 cents a thousand; a saving of34 cents a thousand over calico wrai)ping. But what isof ini])ortanrc, the tension of the thread may beadjusted to wrap the graft so tightly that it may be takenby the root, thrown or shaken without risk of loosening. 236 PLANT PROPAGATION oz^rciD In many tests, either root or cion has broken, rather thanloosen or break at the splice. Hence in planting, graftsmay be handled almost like cuttings without fear ofbreakage, resulting in the saving of thousands of trees. 307. Root graft storage is the same as storage of cut-tings (176, 177), the grafts being tied in bundles of 100,each bundle being correctly labeled with the name of thevariety before being placed in damp, gre
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