Flanders, S.E. 1949c Cold weather stymied parasites of black scale.. California Citrograph 34(9): 406-407.
Notes: Metaphycus helvolus seems to be ineffective in controlling black scale, (Saissetia oleae), on citrus in perennial cold spots.
Flanders, S.E. 1949c Cold weather stymied parasites of black scale.. California Citrograph 34(9): 406-407.
Notes: Metaphycus helvolus seems to be ineffective in controlling black scale, (Saissetia oleae), on citrus in perennial cold spots.