. Bulletin. 1901-13. Agriculture; Agriculture. WORK IN I'KNNSYLVANIA. 15 EXPERIMENTS IN 1907. The work was continued in the same vineyard in 1907. The fol- lowing fungicides were used: 5-5-50 Bordeaux mixture; 4-4-50 Bor- deaux mixture; Burgundy mixture No. 1, plus 1 pound of resin-fishoil soap; Burgundy mixture No. 2, plus 1 pound of resin-fishoil soap; copper borate mixture No. 1; basic copper acetate solution, 5 ounces to 50 gallons of water; and copper chlorid mixture with 1 pound of resin-fishoil soap. The first applica- tions were made with a gasoline-engine out- fit, as illustrated in f
. Bulletin. 1901-13. Agriculture; Agriculture. WORK IN I'KNNSYLVANIA. 15 EXPERIMENTS IN 1907. The work was continued in the same vineyard in 1907. The fol- lowing fungicides were used: 5-5-50 Bordeaux mixture; 4-4-50 Bor- deaux mixture; Burgundy mixture No. 1, plus 1 pound of resin-fishoil soap; Burgundy mixture No. 2, plus 1 pound of resin-fishoil soap; copper borate mixture No. 1; basic copper acetate solution, 5 ounces to 50 gallons of water; and copper chlorid mixture with 1 pound of resin-fishoil soap. The first applica- tions were made with a gasoline-engine out- fit, as illustrated in figure 2. Subsequent aj) plications were made with geared trac- tion sprayers. The weather condi- tions during 1907 were also dry and un- favorable for the de- velopment of black- rot, so that there was no loss from this cause on the check plot. There, was, however, some i n j u r y from powdery mildew, as in 1906. Plot 4 was selected for comparison with the check plot. This plot had been sprayed wit!) 4-4-50 Bordeaux mixture, with 2 pounds of resin-fishoil soap added for the first four applications. From the check plot 1,024 8-pound baskets were picked, and 1,220 8-pound baskets from sprayed plot 4. This shows an increase of 15 per cent of fruit on the sprayed plot. The percentage of culls, according to the report of the packers, was the same from each plot, and the additional quan- tity of fruit on the sprayed plot could not perhaps be justly attrib- uted entirely to the effect of spraying. The same difference of productiveness of individual vines probably enters in this case as in that already referred to in 1906. 87023—Bui. 155—09 3. -Gasoline-engine outfit used in spraying at North East, Pa., in 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 United States. Bureau of Plant Industry, Soils, and
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