. Florists' review [microform]. Floriculture. SCALE ON CATTLEYAS. We notice in The Eeview many in- teresting articles on orchids. Last year we stocked a house with this precious plant and now notice that there are four different kinds of scales popping up in different places. One form is oval, with brown, hard shell; one is small, round and black and white; one is small, yellowish, and one is similar to mealy bug. Will cyanide be effec- tive in small doses, say one-fourth of an ounce to 1,000 cubic feet, once a week, or will fumigating with some nic- otine product do the work just as wellt We
. Florists' review [microform]. Floriculture. SCALE ON CATTLEYAS. We notice in The Eeview many in- teresting articles on orchids. Last year we stocked a house with this precious plant and now notice that there are four different kinds of scales popping up in different places. One form is oval, with brown, hard shell; one is small, round and black and white; one is small, yellowish, and one is similar to mealy bug. Will cyanide be effec- tive in small doses, say one-fourth of an ounce to 1,000 cubic feet, once a week, or will fumigating with some nic- otine product do the work just as wellt We have sprayed, but not with good results, as it is hard to get where they are located, having the plants close to- gether. We give plenty of air and do not carry the house over 60 degrees at night and about 70 degrees during the day. We have cyanide ninety-eight per cent pure and would like to try it, but do not know the quantity it will take for scale and still not injure the plants. Your best remedy for this will be much appreciated. K. B. The several scales referred to can all be overcome, but it will take a little time to accomplish this. I have found that Aphine as a spray will kill a large proportion of these scales. Plants which are badly encmsted with them can be dipped. To get the plants thor- oughly clean, however, I would advise you to go over them with a sponge or soft brush after applying the Aphine. Once your plants are tolerably clean, do not wait until they are again badly infested before using remedial meas- ures. Give a spray once a month and you will keep the scales down pretty well, at least where the spray is care- fully applied. Do not on any account use cyanide at even the weak strength you men- tion. You would probably kill the scales, but cattleyas, tough as they may appear, will not for some reason stand fumigation with cyanide. More than one prominent grower has proved this to his sorrow. Nicotine fumigation is of practically no value against scale. Th
Size: 1871px × 1335px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecad, booksubjectfloriculture, bookyear1912
