
Epa pore we Control 
MEALY BUGS 
Mealy bugs are small, sluggish, whitish, soft bodied insects, measuring up to '/4 inch long, found in 
clusters on the undersides of the leaves or in the leaf axils. ° 
INJURY. This pest sucks the juices frorn the stems and leaves, discoloring and deforming the foliage. 
CONTROL. Parathion is the most effective. Regular fumigations with Calcium Cyanide will aid in 
keeping mealy bugs in check. The combination of Greenhouse Volck 1-50 and Nicofume liquid 
1-400 when applied when temperatures are below 90 degrees will give good results. Loro 1-800 
and DuPont Spreader Sticker |-1200 if sprayed when temperatures are not too high is very effective. 
MITES 
Cyclamen mite and broad mite are often found on the same plants at the same time. Broad mite 
could pass through a complete generation in 4 to 5 days at 70 to 80 degrees while the Cyclamen 
mite will take 4 to 5 times longer. 
INJURY. Infested leaves become deformed, curl from the outside inward, and wrinkle so that pockets 
and pit-like depressions are formed. When the infestation is severe, the mites collect about the 
buds, causing them to blight. 
CONTROL. Fumigating with Parathion is very effective and easy to apply. Vapotone containing 
HETP has given good control. Thiocide 1-200 and DuPont Spreader Sticker 1-800 is an effective 
control measure. We recommend spraying every week or ten days during the growing season. 
Sodium Selenate is effective when applied in liquid form '!/, gram per square foot after plants 
are well established. P40 used at the rate of 3 pounds per hundred square feet is another way 
to use sodium selenate. 
RED SPIDERS 
There are several species of red spiders thot attack the chrysanthemum. They vary in color through 
yellow, orange and red. The body is oval in outline and bears eight well-developed legs. 
INJURY. Red spiders pierce the epidermis of the leaf and draw the liquid contents from the cells, 
causing the leaf to turn pale around the injured portion. They prefer to collect on the under 
surfaces of the leaves, which they cover with silken threads. 
CONTROL. Parathion or TEPP bombs are most effective and easiest to apply. HEPT or TEPP 
contained in insecticides such as Vapotone are by far the most effective on red spider. Spray 
thoroughly and heavily with Yamtox or some rotenone sprays as NNOR, L333, OPTOX at in- 
tervals of five days until the spider is cleaned up. Moisture is detrimental to the development 
of the red spiders and frequent syringing washes them and their eggs off the plants. Loro 1-800 
plus DuPont Spreader Sticker 1-1200 has given good control but should be applied with caution 
as it will injure foliage when temperatures are high. Sodium selenate is effective when applied 
in liquid form !/4 gram per square foot or P40 at 3 pounds per 100 sq. ft. after plants are well 
established. 
SYMPHYLIDS 
Symphylids are small white creatures about Ys to %6 inches long. About 40-60 days are necessary 
for the completion of the life cycle. 
INJURY. Symphylids destroy the fine root hairs and small rootlets, thus stunting the plants and often 
killing them outright. 
CONTROL. If possible construct raised bench. Steam. sterilization has given fair control. Dowfume G 
and the new Greenhouse Isotox Dust are giving excellent control of this pest. 

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Red Spider Injury Mealy Bugs Symphylids Enlarged 10x 


