. Annual report of the Commissioner of Agriculture ... Agriculture -- New York (State). leaves of the opening buds where they are protected from applica- tions of spray mixtures. (Fig. 42.) The most satisfactory prepara- tion from the standpoint of safety to the buds and effectiveness against the insects is three-fourths of a pint of Black Leaf 40 to one hundred gallons of water to which are added from three to five pounds of dissolved soap (Formula 1). Many growers who are spraying at this time for the San Jose scale with the lime-sulphur solu- tion place the nic- otine in the dilute spray ma
. Annual report of the Commissioner of Agriculture ... Agriculture -- New York (State). leaves of the opening buds where they are protected from applica- tions of spray mixtures. (Fig. 42.) The most satisfactory prepara- tion from the standpoint of safety to the buds and effectiveness against the insects is three-fourths of a pint of Black Leaf 40 to one hundred gallons of water to which are added from three to five pounds of dissolved soap (Formula 1). Many growers who are spraying at this time for the San Jose scale with the lime-sulphur solu- tion place the nic- otine in the dilute spray material. This is a desirable practice and if it is done the soap may be omitted from the combination. Kerosene emulsion (For- mula 2) is also available for this treat- ment but may not be added to the lime-sulphur solution. 2. Spraying for adults of the first brood , 7 77-7 t 1 • • 1 i Fig. 43.— Aphis on cluster of unopened and second brood young.— Individuals blossoms; a good time to spray. of these stages are very susceptible to contact sprays. They are usually active upon the trees during the period extending from the ap- pearance of the color in the unopened blossoms (Fig. 43) to the dropping of the petals (Fig. 44). Very effective work may be done in spray- ^y ing for the lice at one or both of these times with Black Leaf 40 using three-fourths of a pint to one hundred gallons of water to which are added from three to five pounds of dissolved soap (For- mula 1) or kerosene emulsion (Formula 2). The Black Leaf 40 may be used in the dilute lime-sulphur spray for apple scab at either of the periods above mentioned. In such instances the soap should be Fig. 44.— Petals fallen; stage for very effective spraying. 24. 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
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