EXPERIMENT STATION REPORT. 619 



a heavy bloom was promised, and no injury from the severe 

 winter apparent. But on the 26th. while the leaf buds made 

 great advances, tlie blossoms were yet undeveloped, and, on 

 Alay 7th, half a dozen clusters only represented the promise 

 of the buds. 



June 27th, the presence of living scales was noted, and at 

 each examination during the summer larvie and recent sets in 

 small numbers were recoided. No treatments were deeined 

 necessary, howe\er, and, on No\'ember 2d. the tree was yet 

 in full leaf. It now forms a complete screen, 8 feet high and 

 10 feet in leng'th, with new shoots extending above the line from 

 5 to 6 feet. There is some scale on the trunk and branches ; 

 more, indeed, to all appearance, than ever before in the history 

 of the tree, but wdiere it is most plentiful on last year's wood, 

 the insects beneath it are dead as a rule. There remains, never- 

 theless, Cjuite a little living scale. 



Without any treatment, summer or winter, since the early 

 spring of 1903, there has Ijeen very little increase of the scale 

 infestation. The tree feels the injury of those that occur on 

 it, deep pits forming in the bark, especially when the rapidly 

 growing shoots are in.fested, but somehow little de\xlopment 

 takes place in the insects. 



Tree 26 — Nectarine. ]March 9th, though the tree was only 

 a little infected, sprayed thoroughly with the caustic soda solu- 

 tion, lyl pounds in 2 gallons of water. Leaf buds beg'an to 

 start April 7th, and developed normally until May 17th, when 

 the tree was in full leaf, but without having developed a single 

 blossom. The wood had a polished appearance from the soda, 

 and many scales on it were dead. Early in June the foliage 

 became a little ragged, and there was an appearance oi leaf curl, 

 w'hich soon disappeared. 



June 27th. the examination developed breeding- scales, with 

 larV'Se and recent sets in some numbers ; hence, on July 8th, 

 sprayed with the horticultural compound, 2 ounces in i gallon 

 of water. This checked development to^ such an extent that 

 re-spraying was not necessary until August 29th, when the 

 previous application was duplicated. This last treatment had 

 very little effect, and by the latter part oi September the infes- 

 tation had become pretty serious. On the 26th, sprayed with 

 I part of soluble petroleum to 4 parts of w^ater, and on the 28th 

 a good efifect was noticeable, though some oi the leav-es 'wef-ei 

 more or less burned. • -^ " "' 



November 2d, the foliage was more than half off, riie tree was 



