1922.] 



Lime-Sulphur as a Fungicide. 



995 



records should be an integral part of the Milk Recording 

 Scheme. In Denmark, a country one-third the size of England 

 and Wales but with four times as many milk-recorded cows, 

 the milk recorders not only weigh but also analyse the milk of 

 each individual cow at every visit — and the cows are milked 

 three and occasionally four times a day — and still find time 

 to take the food records. There are no surprise visits, so that 

 the transport by the farmer of the milk-testing apparatus can 

 be more easily arranged, but there seems no reason why in this 

 country the usefulness of a milk-recording society should not 

 be increased by utilising the services of the milk recorder when 

 he arrives on a farm in taking the weights of the foods as well 

 3s of the milk at every visit. 



****** 



LIME-SULPHUR AND CALCIUM 

 CASEINATE AS A FUNGICIDE, 



E. S. Salmon and E. Horton, 

 Research Department, S.E. Agricultural College, Wye, Kent. 



About the year 1910 lime-sulphur as a summer-wash was 

 being confidently advocated in the United States. In this country 

 fruit growers first turned to this new fungicide in the expectation 

 that it might prove superior to Bordeaux mixture for the control 

 of apple " scab," and, later, as the best wash available for 

 ■fighting the recently introduced American gooseberry-mildew. 



The history of the early use of lime-sulphur is largely recorded 

 in the pages of this Journal. In 1910 and 1911 articles appeared 

 (1) (2)* giving instructions for making the best lime-sulphur 

 wash and for the standardisation of its strength, as well as the 

 results of the first spraying experiments on apples and on goose- 

 berries. It soon became apparent, in further experiments (3) 

 (4) (5) that serious injury — in the form of defoliation — is caused 

 to certain varieties of gooseberries by lime -sulphur at the stan- 

 dard " summer strength." Further, owing to the fact that the 

 lime-sulphur wash when used alone does not " run " well, but 

 dries in blotches which are remarkably adhesive and are not 

 washed off by rain, serious disfigurement of dessert gooseberries 

 results if the berries are sprayed during the later stages of 

 ripening. 



* These and subsequent numbers are references to the Bibliography at the 

 end of this article. 



