This section is from the book "The Standard Cyclopedia Of Horticulture Vol2", by L. H. Bailey. See also: Western Garden Book: More than 8,000 Plants - The Right Plants for Your Climate - Tips from Western Garden Experts.
Fumigation with full dosage schedule. On deciduous trees lime-sulfur solution, one part in nine parts of water; or distillate emulsion.
A minute, elongate four-legged yellow mite causing russeting of the orange and silvering of the lemon.
Same as for Citrus Red Spider, which see.
Oval, yellowish brown, flat, soft scale, sometimes with darker markings, Va. inch in length.
Same as for Black Scale, which see.
The immature stages are found on the under side of the leaves and are scalelike in form. The adults are minute white-winged flies.
Fumigation. Fungous parasites.
Similar to the red scale but yellowish in color.
Same as for Red Scale, which see.
Whitish to creamy transparent scales often abundant on under side of leaves and fruit.
When occurring on young trees spray with whale-oil soap; on older trees it is advisable to remove and burn badly infested leaves.
Large black beetles attacking young trees near the "collar." One beetle will destroy a tree if not removed in time.
Dig out and destroy.
Similar to the citrus white fly.
Contact insecticides. Destroy wild food plants.
Shining black snout beetles, the larvae of which live in young palm trees reducing the interior tissues to a mass of pulp.
Dress all wounds with tar or similar preparations. Avoid all unnecessary pruning. Destroy all felled trees and stumps not used as traps. The beetles may be attracted by the use of injured palm cabbages and trapped under rubbish.
A large beetle about 1 1/2 inches long, attacking and burrowing through the crown and stem.
Destroy all breeding-places, such as old coconut trees, stump, and cocao pods.
A small caterpillar about 1/8 inch long, mines in the leaves producing small brownish areas. Badly infested leaves drop.
No satisfactory treatment known.