Some factors influencing the efficiency of Bordeaux mixture

Pickering sprays /

“…Various settling tests with Bordeaux prepared in different ways have been made, and numerous adhesives have been tried. Hawkins (12), who gives a detailed description of such tests, states that…”

Bordeaux-oil emulsion /

“…In order to present the problem in graphic form Figure 1 has been drawn to show the approximate periods of activity of the principal fungi in a bearing grove in Florida and also the relative abundance of adult white flies, 1 scale insects, and rust mites. 2 The dates when insecticidal applications are usually made are also shown.…”

The increase in lethal action of some fungicides to the spores of species of Phytophthora due to changes in chemical potential

“…Copper was more toxic than cobalt, zinc, iron, the mineral acids, and ethyl alcohol but was surpassed by nickel. Its superiority as a fungicide lay, he said, in its t cheapness and the tenacity v/ith v;hich its hydroxide adheres to foliage, since these experiments were carried on at the ; end of the last century, Butler (8), Hawkins (24), Maclnnes (35), and otliers have rsj orted the results of tbeir investiga tions either to explain the nature of the toxicity or to find the 1:thai concentr.tions of copper salts for the various groups of plant parasites.…”