will produce the first generation of worms. This generation is seldom numerous enough 

 to cause damage. But the second generation --that comes during late July, August, and 

 early September --often presents problems. Watch the lawn for damage. If control is 

 necessary, use carbaryl (Sevin) , diazinon, or trichlorfon (Dylox) as sprays or granules, 



Bagworms have hatched in the southern area of the state. Sprays should be applied im- 

 mediately. In the central section, the target date for spraying is after June 15; in 

 the northern portion, after June 50. 



For best results, spray while the worms are still small and easy to kill and before 

 damage is evident. Use carbaryl (Sevin), diazinon, or malathion. Malathion will also 

 provide fair control of any mites that may be present. Follow the recommendations on 

 the label and check carefully for the plants that could be injured by the insecticide 

 you use . 



Aphids are present on many trees and shrubs , and on some flowers such as roses . In 

 most instances, the plant will not be seriously damaged by aphids. However, if the 

 leaves begin to curl and dry, apply a spray using 2 teaspoons of 50- to 57-percent 

 malathion or 25-percent diazinon liquid concentrate per gallon of water. Do not use 

 malathion on African violets or cannaert red ceder. Do not use diazinon on ferns or 

 hibiscus plants . 



WEEDS 



DIRECTED POSTEMERGENCE APPLICATIONS FOR EMERGENCY USE IN CORN 



We have received several questions about grass -control materials, after it is too late 

 to use the atrazine-oil treatment. The cultivator is still a valuable weed-control 

 tool, and its use at the right time can take care of many of the weed problems. 



Directed sprays of Lorox and Dowpon can be used in emergency situations, when grass 

 weeds are too tall for control by cultivation. You must have a significant height dif- 

 ferential between the corn and the weeds in order for these treatments to be effective. 



Dowpon (dalapon) can be applied as a directed spray when corn is 8 to 20 inches tall, 

 from ground to whorl . Use leaf lifters to keep the spray off the corn leaves . Dowpon 

 will translocate into the corn plant, causing stunted and deformed plants. Do not 

 let the spray contact more than the lower half of the stalk, and do not direct the 

 spray more than 7 inches above the ground. The rate of use for Dowpon is 2 pounds 

 of actual chemical per acre (broadcast basis). Use proportionately less, depending 

 on the coverage. 2,4-D can also be added to the spray to control broadleaved weeds. 



Lorox (linuron) may be applied as a directed spray after the corn is at least 15 inches 

 high, but before weeds are 5 to 8 inches tall. Lorox will control both grasses and 

 broadleaved weeds --if you cover the weeds with the spray and keep it off the corn as 

 much as possible. Any corn leaves that are sprayed will be killed. Use 1-5/4 to 5 

 pounds per acre of 50 -percent Lorox, on a broadcast basis, or proportionately less 

 in a directed band. Surfactant WK should be added at the rate of 1 pint per 25 gal- 

 lons of the spray mixture. 



CLIMBING MILKWEED 



This is sometimes called bluevine. It is a deep-rooted perennial vine, not an early 

 emerging weed. Hence, it is necessary to control other weeds in the corn with pre- 

 emergence herbicides or cultivation, or both, in order to get good spray coverage on 



