Sprays and Spraying. 75 



buds open in spring. Personally. 1 jirefer the latter, l)ut attention 

 should be called to the danger of unfavorable weather conditions 

 at that time and to the consequent inadvisability of delaying the 

 work too long. 



All other sprayings are for special purposes and can best be con- 

 sidered in connection wiili particular pests. 



APPLE. 



Apple Scab. 



Spraj- with Bordeaux or with lime-sulphur (1-2U):, first, when the blos- 

 soms are beginning to unfold; second, immediately after the blossoms fall; 

 third, ten days or two weeks later. (If the trees were sprayed with winter 

 strengtii iime-sulphur solution before the buds started, the first of the above 

 applications may be omitted. If prolonged rainy weather follows the third 

 spraying, a fourth two weeks later may be profitable.) 



Codling Moth. 



Add arsenate of lead or paris green to the second scab spray. Endeavor 

 at this time, by the most thorough work, to fill the blossom end of every 

 apple with the spray. If this be well done, and if the fruit be again thor- 

 oughly sprayed late in June, fairly good results may be obtained without 

 further applications. It is our experience, however, that in the Willamette 

 Valley at least, it usually pays to spray once or twice for the second brood. 

 The first of these applications should be about August 1; the second some 

 three or four weeks later. While thorough work should be done at all times 

 particular emphasis should be placed upon the two first sprayings. If all 

 of the first brood larvae could be killed there would be none of the second. 



San Jose Scale. 



Spray in winter with lime-sulphur, either immediately after the leaves 

 fall or before the buds start in spring. Do thorough work. Soak every 

 part of the tree. 



Aphids or Plant Lice. 



(Woolly-aphis, Green-aphis, Brown-aphis, Black-aphis.) 



The plant lice rarely if ever become troublesome in orchards which re- 

 ceive an annual winter spraying with lime-sulphur. Dilute kerosene emul- 

 sion or black-leaf sheep dip applied just after the leaf buds start or at any 

 time the aphids become troublesome, is also effective. 



Apple Tingis. 



Practice clean culture, clean up and burn all rubbish about the orchard. 

 Spray when eggs are hatching in late May or early June with kerosene 

 emulsion or black-leaf sheep dip. 



Apple Tree Anthracnose. 



Spray with Bordeaux or lime-sulphur soon after fall rains begin or at 

 least as soon as fruit is picked. Spray again with lime-sulphur as soon as 

 leaves have fallen. 



CHEREY. 



Shot-hole Fungus. 



Spray with Bordeaux or lime-sulphur when blossoms are opening, and 

 again when petals have fallen. 



Cherry Slugs. 



Spray with arsenate of lead whenever they become troublesome. 



