Influence Of Spray Practices On Arsenical Residues

Autor: Mclean, Harry C., Weber, Albert L.
Zdroj: Journal of Economic Entomology; December 1928, Vol. 21 Issue: 6 p921-921, 1p
Abstrakt: Heavy spraying of winter apples in June in New Jersey during a season with more than normal rainfall means that later sprays cannot be applied without exceeding the new tolerance. Dusted fruit showed but traces. of arsenical residues. Spraying up to July 1st followed by dusting showed very low residues at harvest time. The heaviest residues occur on the lower parts of the trees.
Databáze: Supplemental Index