. Florists' review [microform]. Floriculture. Sbptember 18, 1913. The Florists^ Review 13 bed should he covered for twelve hours or more with burlap or oil cloth. Cut- tings should not be placed in the sand until the formaldehyde has evaporated. Evaporation may be facilitated by fre- ([uent stirring. Great care should be exercised in lulling out any affected plants, discard- ing those showing lesions on the stem, black point or black bands on the roots. Other Means of Disinfection. The possibility of spreading infec- tion at the time of making the cuttings and when sorting out diseased plants
. Florists' review [microform]. Floriculture. Sbptember 18, 1913. The Florists^ Review 13 bed should he covered for twelve hours or more with burlap or oil cloth. Cut- tings should not be placed in the sand until the formaldehyde has evaporated. Evaporation may be facilitated by fre- ([uent stirring. Great care should be exercised in lulling out any affected plants, discard- ing those showing lesions on the stem, black point or black bands on the roots. Other Means of Disinfection. The possibility of spreading infec- tion at the time of making the cuttings and when sorting out diseased plants is great. There should be some method of protecting healthy cuttings or plants by dipping them in a fungicide. The difficulties experienced by the writer in making such treatments, however, lay in the fact that violets, particularly the cuttings, are extremely sensitive to chemicals. Bordeaux mixture and formaldehyde at various strengths were tried, but the number of plants killed was too great to warrant practical ap- plication of the method. Further tests are contemplated. A thorough disinfection of all soil in the houses should then be effected. The grower attempts to do this in a prac- tical way by changing his soil from year to year. This is a laborious and often a costly process, but yet practically necessary on account of disease. Many growers would like to use their soil at least two years if it were not for the occurrence of this disease. Soil is dis- infected easily with steam, but most violet houses are heated with hot water, so that steam sterilization is impracti- cable. With this in mind the writer has undertaken to disinfect the soil in violet houses by means of the formalde- hyde treatment. Just how satisfactory this treatment will be remains yet to be seen. Theoretically it should prove satisfactory, but quite often theory does not work out in practice. Acid and Alkaline Fertilizers. Fortunately, not many violet grow- ers have begun the use of lime. A;i alkalin
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Keywords: ., bookcentury1900, bookdecad, booksubjectfloriculture, bookyear1912
