Calag Archive
Calag Archive
Aphid resistant to parathion: Strain of walnut aphid in Sun Jose area found to have developed definite resistance to parathion
Publication Information
California Agriculture 8(5):8-8.
Published May 01, 1954
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Abstract
A strain of walnut aphid–Chroma-phis juglandicola (Kltb.)–encountered in the San Jose area during insect investigations in 1953 exhibited definite resistance to parathion.