摘要:

The effect on the free-living stages of sclerostomes of some non-nitrogenous artificial fertilizers, containing potash, phosphoric acid or calcium, is discussed. Of these fertilizers kainit has most practical advantages. Under the conditions of the experiments, which are otherwise ideal for the survival of the larvae, one part of kainit to 23 parts of fresh horse feces is necessary to sterilize them. The proportions in which the other fertilizers must be mixed are:—Muriate of potash 1:17, (potassium chloride, one of the main constituents of the previous fertilizer, is rather more lethal); carbonate of potash 1:13; sulphate of potash 1:5. Superphosphate (20%) sterilized when mixed at 1:5, and 16% superphosphate required 2:5. Basic slag and raw rock phosphate (Florida) had no sterilizing value. Lime, in spite of its reputation as a sterilizing agent for many pests has, when mixed with fresh feces, little effect on the free-living stages of sclerostomes.

ISSN:1923-4287    

DOI:10.1139/cjr38d-006

出版商:NRC Research Press    

年代:1938

数据来源: NRC

摘要:

In a preliminary survey during 1937, 729 hogs from eastern Canada were examined by both digestion and compression techniques. Fifteen or 2.06% were found to be infected with living encysted larvae ofTrichinella spiralis.

ISSN:1923-4287    

DOI:10.1139/cjr38d-007

出版商:NRC Research Press    

年代:1938

数据来源: NRC