| Liberty Hyde Bailey - 1889 - 264 sider
...flour or any light and fine powder. The poison may be used in the proportion of 1 part to from 6 to 3o of the diluent. 4. In fumigation. It may be scattered...upon coals, or made into small balls by wetting and molding with the hands and then set upon coals. This is a desirable way of dealing with mosquitoes... | |
| Liberty Hyde Bailey - 1892 - 238 sider
...fumigation. It may be scattered directly upon coals, or made into small balls by wetting and molding with the hands and then set upon coals. This is a...with mosquitoes and flies. 5 : In alcohol. (1 ) Put one part of pyrethrum (buhach) and four parts alcohol, by weight, in any tight vessel. Shako occasionally,... | |
| Liberty Hyde Bailey - 1895 - 336 sider
...flour or any light and fine powder. The poison may be used in the proportion of 1 part to from 0 to 30 of the diluent. 4. In fumigation. It may be scattered...in any tight vessel. Shake occasionally, and after 8 days filter. Apply with an atomizer. Excellent for greenhouse pests. For some plants it needs to... | |
| West Virginia University. Agricultural Experiment Station - 1898 - 982 sider
...by dusting u]x>nor beneath the plants. In Alcohol: — Put one part of pyrethrum ( buhach ) and four parts alcohol, by weight, in any tight vessel. Shake...occasionally, and after eight days filter. Apply with an automizer. Excellent for green house pests. For some plants it needs to be diluted a little. Another... | |
| British Columbia. Dept. of Agriculture - 1901 - 316 sider
...proportion of 1 part to from 6 to 30 of the diluent. 4. In fumigation : It may be scattered direct!}' upon coals, or made into small balls by wetting and...flies. 5. In alcohol : (1.) Put 1 part of pyrethrum (buchach) and 4 parts alcohol, by weight, in any tight vessel. Shake occasionally, and after S days... | |
| Marcus Benjamin, Arthur Elmore Bostwick, Gerald Van Casteel, George Jotham Hagar - 1910 - 546 sider
...flower heads of species of pyrcthrum. This may be used in solution in water, dry, without dilution, or in fumigation. It may be scattered directly upon coals, or made into small balls by wetting, and then set upon coals. This is a desirable way of dealing with mosquitoes and flies. (6) Tobacco, used... | |
| Marcus Benjamin, Arthur Elmore Bostwick, Gerald Van Casteel, George Jotham Hagar - 1910 - 546 sider
...dilution, or in fumigation. It may be scattered directly upon coals, or made into small balls by wetting, and then set upon coals. This is a desirable way of dealing with mosquitoes and flies. (6) Tobacco, used with whale-oil soap as tobacco water, in form of dust, or as fumes. (7) White hellebore,... | |
| Liberty Hyde Bailey - 1911 - 634 sider
...fumigation. It may be scattered directly upon coals, or made into small balls by wetting and molding with the hands and then set upon coals. This is a...with mosquitoes and flies. 5. In alcohol. (1) Put a part of pyrethrum (buhach) and 4 parts alcohol, by weight, in any tight vessel. Shake occasionally,... | |
| Liberty Hyde Bailey - 1911 - 624 sider
...flour or any light and fine powder. The poison may be used in the proportion of 1 part to from 6 to 30 of the diluent. 4. In fumigation. It may be scattered...upon coals, or made into small balls by wetting and molding with the hands and then set upon coals. This is a desirable way of dealing with mosquitoes... | |
| Washington (State) - 1893 - 1616 sider
...Hour or any light and tine powder. The poison may be used in the proportion of 1 part to from (i to 30 of the diluent. 4. In fumigation. It may be scattered...desirable way of dealing with mosquitoes and flies. Quassia. — Boil 4 ounces of quassia chips 10 minutes in a gallon of water; strain off the chips and... | |
| |