. Annual report of the Commissioner of Agriculture ... Agriculture -- New York (State). ISTew York Agricultural Experiment Station. 945. control as there is an intermingling of all stages of the insect, and some of them are resistant to any spraying mixtures which can safely be used on foliage. Moreover the leaves, especially i}i§k *$$&- ^ tne Srowth is heavy, seriously f|f |I;t\ ^JnT interfere with thorough treatment, ^'??'Pslll f^ an<^ there is also danger that it^plif M$fe$? foliage injured by the psylla may be further damaged by the appli- cations of the sprays. Frequent and thoroug
. Annual report of the Commissioner of Agriculture ... Agriculture -- New York (State). ISTew York Agricultural Experiment Station. 945. control as there is an intermingling of all stages of the insect, and some of them are resistant to any spraying mixtures which can safely be used on foliage. Moreover the leaves, especially i}i§k *$$&- ^ tne Srowth is heavy, seriously f|f |I;t\ ^JnT interfere with thorough treatment, ^'??'Pslll f^ an<^ there is also danger that it^plif M$fe$? foliage injured by the psylla may be further damaged by the appli- cations of the sprays. Frequent and thorough spray- ^Mf ing with the tobacco extract *plF" ^^^a^^lillk. (Formula 1), on the first dis- W 4^3d^U^ covery of injurious numbers of Sk. the insects is the most satis- factory means of affording pro- H,t- ^C°ndltlonsfof bloSn°m dusuers tection to the trees, during the spraying for psylla nymphs. SPRAYING MIXTURES AND FORMULAS. Formula 1. Tobacco Extract. Tobacco extract (40 per ct. nicotine) f pt. Water 100 gals. Soap 3 to 5 lbs. Formula 2. Fish-oil Soap. Fish-oil soap 20 lbs. Water 100 gals. These are recommended for fall or spring spraying to destroy the " ; Formula 3. Miscible Oil. Miscible oil 7-8 gals. Water 100 gals. This is a rather dangerous spray and should be used only in the spring as buds are swelling and never after buds begin to show green ar the tips. Formula 4. Lime-Sulphur Mixture. Lime-sulphur solution (32°-34° B.) 1 gal. Water 8 to 9 gals. To be applied just as the blossom cluster-buds separate at the tips to destroy psylla eggs about to hatch and newly-emerged nymphs. 60. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original New York (State). Dept. of Agriculture; New York State Agricultural Experiment Station; Cornell University. Agricultural Experiment Station. Alban
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