EXPERIMENT STATION REPORT. (>n 



a few trees were tO' be treated and had the opportuniLy of tryhig 

 it in an infested apple orchard at South Branch. The trees 

 were all in bearing and of good size, about twelve trees in a row 

 and about seven rows in the orchard. The work was done with 

 a Gould Kero water barrel pump, the kerosene tank and pump 

 disconnected, and the spray rod was a ten-foot gas pipe, with 

 a triplet of Vermorel nozzles. The actual application began 

 March 17th, under the direction of Mr. E. L. Dickerso-n, who 

 made up the mixtures closely in accordance with the formula in 

 Bulletin No. 169, and sprayed the first series of trees until the 

 man in charge thoroughl}' imderstood the work to be done. 

 The trees were sprayed from two sides and, though the appli- 

 cation was not under supervision after the first day. there is 

 reason to- believe that it was faith fullv made. 



July iith, Mr. Dickerson inspected the results of his work, 

 and found consideral)le fresh scale and active larvre at the ends 

 of the twigs. Toward the center the trees were comparatively 

 clean; but toward the tips the stocy was otherwise. "This, I 

 think, was not due to poor spraying, but rather to the ineffi- 

 ciency of the material used, for on some of the young- shoots 

 growing at the center of the trees, where the application was 

 heaviest, were a number of fresh sets. However, the trees on 

 which I saw the numerous crawling larv<e and recent sets, 

 ha\e been ^•ery scaly. On three or four of the younger trees, 

 which, however, are good, large bearing" trees, there was little 

 or no signs of scale." 



Another orchard in the \icinity, si>rayed a little later l)y the 

 same man. with the same outfit and with material made up id 

 the same way, slKnved most of the trees comparati\'e!y free, and 

 only three or four, which had been \-ery badly infested, had active 

 larvie in any considerable numbers, .\fter midsummer the scale 

 increased in the first orchard, pei)pering the fruit badly and 

 bringing the trees at the end of the season into about the con- 

 dition in which they were in early spring-. Without an}- douljt 

 a large percentage of, scales was killed by the application made; 

 but it did not prevent the serious spotting of the fniit. and ab- 

 solutely no gain was made in cleaning the trees. They looked 

 better in midsummer than they had appeared the year before, 

 and something had been gained in that way ; and at the worst 

 no ground had been lost, while all around trees were dying. 



The worst news came from those places which were believed 

 to be esi>eciallv within the range of this form of linie-sulphur- 

 combination. Tn scMue of the gardens and grounds o-f cities and 



