. Agricultural news. Agriculture -- West Indies; Plant diseases -- West Indies. 142 THE AGRICULTURAL NEWS. May 3, PLANT DISEASES. THE SUSCEPTIBILITY OF RUTAOEOUS PLANTS TO CITRUS CANKER. Some important data cf the results of field observations knd iooculations witli citrus canker {/^sew/omonus citri) upon plants belonging to genera more or less related to citrus are ^iven in a paper published in the Journal of Agrkultuial Meumch, Vol. XV, No. 12. The author, Mr. H. Atherton Lee, Pathologii^t, Bureau of Plant Industry, United States Department of Agriculture, shows from these
. Agricultural news. Agriculture -- West Indies; Plant diseases -- West Indies. 142 THE AGRICULTURAL NEWS. May 3, PLANT DISEASES. THE SUSCEPTIBILITY OF RUTAOEOUS PLANTS TO CITRUS CANKER. Some important data cf the results of field observations knd iooculations witli citrus canker {/^sew/omonus citri) upon plants belonging to genera more or less related to citrus are ^iven in a paper published in the Journal of Agrkultuial Meumch, Vol. XV, No. 12. The author, Mr. H. Atherton Lee, Pathologii^t, Bureau of Plant Industry, United States Department of Agriculture, shows from these observa- tions that a wide range of hosts exists for citrus canker, and that the po.«sibility of lesions upon plants other than Citrvs spp. serving sources of new infection becomes emphasized in the work of citrus caokfr eradication. Over 2,000 inoculations were made in the course of the investigation on twenty-four species representing twenty genera of the Rutaceae. In making the inoculations, an infusion of the citrus canker organism was painted upon the leaf blade, midrib, jiptiole, or stem, as the case might be, with a small hair brush, and then the was punctured through the coating of infusion with a needle. The inocu- lated twig was maintained in a; moist condition by wrapping it ia parafin paper containing a small piece of mi listened eottoD. Tlie investigations were carried on largely at the Lamao IRxperiment Station of the, Philippine Bureau of Agriculture. Many of the plants studied, related to citros, grow wild in the Philippine Islands. It may be noticed that two of the plants investigated are widely known in these West Indian islands, namely i/urraj/a {Vhn\caa)e.\otica, grown an ornamental shrub, and locally called 'cilronella', and Triphasic trijoliata ene of the best hedge plants in these , locally called 'sweet or myrtle lime'. Another genus experimented with (Xan- thoxylum) several West Indian representatives, although the
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