. Annual report. Entomological Society of Ontario; Insect pests; Insects. 57 " When needed for use, the butter will mix readily with any proportion of water, if first thinned with a small quantity of the ; In using the emulsion for killing plant lice, or other insects, care should be taken to dilute it at least twelve or sixteen times with water and then try the effect on a small portion of the infested plant; if it is found to injure the foliage, then dilute still further. One pint of the butter will usually suffice for two gallons of water. Dilute only as needed for immediat
. Annual report. Entomological Society of Ontario; Insect pests; Insects. 57 " When needed for use, the butter will mix readily with any proportion of water, if first thinned with a small quantity of the ; In using the emulsion for killing plant lice, or other insects, care should be taken to dilute it at least twelve or sixteen times with water and then try the effect on a small portion of the infested plant; if it is found to injure the foliage, then dilute still further. One pint of the butter will usually suffice for two gallons of water. Dilute only as needed for immediate use. The cost of this article, which is very effective, is exceedingly trifling. Another emulsion is made with coal oil and soap instead of milk. When a moderate quantity is required, take two gallons of coal oil, half a pound of common bar soap, soft soap, or whale-oil soap, and one gallon of water. Dissolve the soap in the water, and add it boiling hot to the coal oil. Churn the mixture, as before, by means of force-pump and spray nozzle, for five or ten minutes. The emulsion, if perfect, forms a cream, which thickens on cooling, and should adhere without oiliness to the surface of glass. Dilute before using, one part of the emulsion to nine parts of cold water. The three gallons of emulsion thus made produce, when diluted, thirty gallons of wash at a cost of about one cent per gallon. These emulsions have been found thoroughly effective remedies, not only for plant lice, but also for many other insects. They can be used in the field, hop-yard or orchard on a large scale, and in the garden with equal efficiency. In England, similar washes have been applied to hop-yards for the destruction of the Aphis by the aid of steam power. Apple Tree Borers. There are two beetles whose larva? are especially injurious to young apple trees; they are familarly known as the flat-headed and round-headed borers, from the shape of the grubs. The former belongs to the family Buprestida?, and i
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectinsects, bookyear1872
