. The Gardeners' chronicle : a weekly illustrated journal of horticulture and allied subjects. eorge Wall, by fumigation). Moreover, thedetailed treatment of the trees in a large plantationby any remedy of the kind would be practicallyimpossible. I fear that the leaf disease is a [GarJeners Chronicle^ 1876, February 19, p. 246;March 4, p. 30S ; Grevillca, 1S76, vol. iv., pp. 116,134—135) From a report by Dr. Cooke, issued bythe India Office, it appears that the Pellicularia* makes its appearance about July, when the leavesof the trees affected by it get covered with a slimygelatinous matter, a
. The Gardeners' chronicle : a weekly illustrated journal of horticulture and allied subjects. eorge Wall, by fumigation). Moreover, thedetailed treatment of the trees in a large plantationby any remedy of the kind would be practicallyimpossible. I fear that the leaf disease is a [GarJeners Chronicle^ 1876, February 19, p. 246;March 4, p. 30S ; Grevillca, 1S76, vol. iv., pp. 116,134—135) From a report by Dr. Cooke, issued bythe India Office, it appears that the Pellicularia* makes its appearance about July, when the leavesof the trees affected by it get covered with a slimygelatinous matter, and, turning black, drop off; theberries likewise rot and fall in clusters. It is esti-mated that nearly one quarter of the crop each year islost by this plague. The collection and burning ofthe dead leaves will in this case also have to be per-severed with. As suggested by Dr. Cooke, the fungusbeing external in its growth, is likely to be materiallychecked by the application of sulphur. A somewhat similar disease to the Pellicularia, butdescribed in too vague a manner to speak definitely. Fig. 28.—MR. WARNERS PHAL^NOPSIS HOUSE. for such an enormous disturbance of natural conditionsai is implied in replacing a tropical forest of the mostvaried and mixed vegetation by a plantation of somesingle economic plant. In temperate countries exactlysimilar phenomena are exhibited by the rapid spreadof the Potato funguf, the Vine louse (Phylloxera), andIhe Potato beetle from the western side of America,first to the eastern, and then, at any rate in the case ofthe two former, and no doubt eventually in the caseof the latter, to the Old World. Mr. Berkeleys examination of the Hemileia wasmade from dried Coffee leaves transmitted to thiscountry. A first essential is a more adequate studyof tlie fungu?; than such specimens could afford,especially in all the details of its life history, fromgermination to fructification. Some progress in thislatter task has been made by Dr. Thwaites, with t
Size: 1776px × 1406px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bo, bookdecade1870, booksubjectgardening, booksubjecthorticulture
