l62 THE CONNECTICUT POMOLOGICAL SOCIETY. 



Advantages of K-L Mixtures. 

 They are easily made without any heating of materials ; 

 are moderate in cost ; are not disagreeable to handle except 

 when caustic soda is used ; have no unpleasant odor ; can be 

 sprayed through the finest kind of nozzle without clogging 

 if foreign matter is kept out; do not necessarily require strain- 

 ing ; are effective and adhere well ; can be applied at any time 

 during the year; are absolutely uniform in percentage of ker- 

 osene ; can be used against all sucking insects, and we hope 

 against biting insects and fungous diseases also, all in one 

 application ; and can be distinctly seen on the trees so a care- 

 less nozzleman can not hide a poor job. Another special 

 advantage is the spreading of the spray on the bark like the 

 spreading of oil on paper. This is especially desirable on 

 fuzzy twigs like those of the apple. 



Suggestions and Conclusions. 



In only a few of the recent tests has the killing effect of 

 the mixtures become exhausted so the final determination of 

 results can be made. That some of them are at least as reli- 

 able as the lime-sulphur-salt wash there is no reasonable 

 doubt. From the results just given the following can be 

 suggested for trial during the dormant season. 



Twenty per cent, or 25 per cent. K-L-B (kerosene-lime- 

 Bordeaux) especially on peach trees to get the effect of the 

 Bordeaux mixture against leaf curl and brown rot, and on 

 apple where the scab and bitter or black rot are prevalent; 

 20 per cent, or 25 per cent. K-L with or without rosin soap 

 or the same strength with salt i pound to 5 gallons ; or 20 per 

 cent. K-L with caustic soda i pound to from 12 to 20 gallons. 

 The K-L-B is to be preferred above all other mixtures. 



Crude petroleum is not at all satisfactory in making K-L 

 and its use is not advocated. 



If there are portions of the dormant period more favor- 

 able for successful treatment than other portions, it certainly 

 seems that the very best ones are early in November and late 

 in the spring, because then the scales are not stuck to the 

 bark so closely as they are in the winter, and the remedies 

 will more readily get beneath their scaly protection. Our 

 tests have shown that early November and late spring treat- 



