1 64 THE CONNECTICUT POMOLOGICAL SOCIETY. 



and that \y 2 to 50 is much safer and is about as strong as 

 one should risk in spraying a large orchard. 



The home-boiled solution, containing 5 lbs. sulphur 

 and 2y 2 lbs. of lime to 50 gals, of water, with 2 lbs. of ar- 

 senate of lead, caused very little or practically no injury. 

 It was made by boiling the sulphur and the lime with a 

 small quantity of water in a kettle over a fire for 45 

 minutes. Enough for 200 gallons of spray (20-10-200) 

 may be prepared in a 20 gallon kettle. 



The self-boiled lime-sulphur and arsenate of lead 

 caused no injury whatever; in fact, the foliage sprayed 

 with this mixture had a bright-green, vigorous appearance 

 throughout the season. The leaves were noticeably larger, 

 the buds were plumper, and the trees made more growth 

 than those sprayed with the other lime-sulphur prepara- 

 tions and with Bordeaux. 



The Bordeaux mixture caused considerable spotting 

 and yellowing of the leaves on York Imperial, Ben Davis 

 and Yellow Newtown, but very little on Winesap. Some 

 of the injured leaves dropped from time to time, so that 

 the foliage on some trees was somewhat thinned out to- 

 ward the end of the season, but the damage could not be 

 considered very serious. 



The weather was cloudy and rainy from early spring 

 up to July 1, so that the conditions were favorable to the 

 development of spray injury. It turned dry about mid- 

 summer, however, and practically no rain fell during the 

 remainder of the season. 



The Control of Diseases. 



In the orchards where these experiments were con- 

 ducted none of the apple diseases except leaf-spot devel- 

 oped to a serious extent, so that the test was not a severe 

 one. The apple leaf-spot, so common throughout Virginia, 

 was entirely controlled by all the mixtures used. The self- 

 boiled lime-sulphur made the best showing in this connec- 



