. The American florist : a weekly journal for the trade. Floriculture; Florists. leaves to rot and fall off. In appearance it resembles the drop somewhat hut as the treatment for drop, rot and rhizocto- nia is the same, the precaution of steril- izing the soil before using to a depth of three inches will keep away trouble. The maturing plants are subject to the drop and botrytis if grown in unsteril- ized soil, causing the under or inner leaves to decay, and also to a downy mildew, and to top burn. The mildew Perono- spora gangliformis is in appearance a white pubescence, on the lower surface
. The American florist : a weekly journal for the trade. Floriculture; Florists. leaves to rot and fall off. In appearance it resembles the drop somewhat hut as the treatment for drop, rot and rhizocto- nia is the same, the precaution of steril- izing the soil before using to a depth of three inches will keep away trouble. The maturing plants are subject to the drop and botrytis if grown in unsteril- ized soil, causing the under or inner leaves to decay, and also to a downy mildew, and to top burn. The mildew Perono- spora gangliformis is in appearance a white pubescence, on the lower surface of the leaf, causing it to turn yellow and flabby, finally decomposing it. It may be brought on by several things, as too high a temperature at night, 40° being sufficiently high; lack of proper food, too much moisture, sudden changes of tem- perature, no change from night to day temperature, or too little light, a cold wet soil or, in fact such conditions as prevent a vigorous, rapid, healthy growth. It can be destroyed by evaporating sulphur in the house. Top burn or leaf burn is characterized by a wilting or deadening of the outer parts of the leaves. It is caused by a too high temperature, too dry air, or lack of water. It is a drying up of the cells of the leaf from too rapid evaporation ot water. Rot and drop in older plants is facilitated by too warm or close air, heavy compact soil, too much water, or from heavy top-dressings of manure. It is obvious, therefore, that the treat- ment should be in the nature of preven- tion. This means giving the crop the environment best adapted to a vigorous and unchecked growth. Francis Canning. Trade Notes. In a recent decision on protest of H. Bayersdorfer & Company against the assessment of duty on natural leaves, dyed or painted, and wreaths made up from such leaves, the board of general appraisers decided that the goods has been properly classified as manufactures of grass. A. Robichon, Fils, Olivet, Orleans, France, was awar
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectfloriculture, bookyea
