Olives, oranges, peaches, pears--if it grew in the Sacramento Valley, it had a predator or pest partial to it. The State Printing Co. published A TREATISE ON THE INSECTS INJURIOUS TO FRUIT AND FRUIT TREES OF THE STATE OF CALIFORNIA to enable growers to identify and eradicate the bugs that threatened the growth and marketing of crops. Remedies included washing with soda soap, kerosene emulsions or whale oil as well as tenting and spraying with various gases.
