Black cutworm damage is still occurring in a few late-planted cornfields. Insecti- 

 cide control may be warranted in these fields to prevent further stand reduction, 

 since replanting is no longer feasible. 



LIVESTOCK 



Face flies have continued to increase and dairy and beef cattle in some areas are 

 suffering from these high infestations. Eye problems are apparent in cattle where 

 large numbers are found. Counts last week averaged 20 face flies or more per animal, 

 the highest observed since 1962. Cattle plagued by face flies usually develop eye 

 problems such as pink eye, which is transmitted by this pest. For control on dairy 

 cattle, apply a 2-percent, ciodrin oil-base spray at 1 to 2 ounces per animal as often 

 as once a day, if needed. A 1-percent, ciodrin water-base spray- -applied at 1 pint 

 per animal per week- -may be used in place of the oil-base spray. Dust bag treatments 

 with insecticides like ciodrin or coral do not give effective control of face flies . 



For pastured beef cattle, the ciodrin water-base spray (as suggested for dairy cattle) 

 should be considered. Otherwise, use a head- or back-oiler, wrapped with canvas or 

 burlap and saturated with a 5-percent solution of toxaphene in oil. This will afford 

 partial relief from face flies. Keep the oiler in good repair and well saturated. Do 

 not apply toxaphene to beef cattle within 28 days of slaughter. 



HOMEOWNER INSECT PROBLEMS 



Sod webworm moths are beginning to appear in increasing numbers, particularly in 

 southern and central sections. These buff-colored moths rest in shrubbery and tall 

 grass during the day and are seen flying in a zigzag pattern over the lawn near dusk. 

 These are the second- generation moths that are laying their eggs at this time. If 

 you find large numbers of these moths in your yard, plan to treat your lawn with an 

 insecticide about 2 weeks later. Usually target dates for treatment are late July in 

 southern sections, early to mid-August in the central section, and mid- to late Aug- 

 ust in the northern sections. 



The larvae of the webworm are gray worms with brown spots and black heads. They are 

 about an inch long when full grown and live for 3 to 4 weeks in the worm stage. The 

 worms live in silken- lined burrows in the thatch of the lawn, clipping off grass blades 

 at the base. Brown spots appear in the lawn and large numbers of robins will move in 

 to feed on the larvae. By this time, it is usually too late for control. 



For control of webworms, apply a spray or granules of 2 pounds of actual carbaryl 

 (Sevin) , 1 pound of actual diazinon, or 1-1/4 pounds of actual trichlorfon (Dylox) per 

 10,000 square feet. Use about 25 gallons of water to distribute the insecticide over 

 the 10,000 square feet when spraying. Do not water the lawn for at least 5 days after 

 treatment. If heavy rains occur within 3 days of application, a repeat treatment may 

 be needed. 



WEEDS 

 TOMATOES, GRAPES, AND 2,4-D 



Tomatoes have started ripening. And we have already seen the first samples of tomatoes 

 and grapes injured by 2,4-D. Tomatoes and grapes are two of the most sensitive plants 

 as far as foliar (leaf) symptoms . The leaves wrinkle and elongate into grotesque 

 shapes . 



