-2- 



If the plants are being seriously affected, we suggest an application of granular Dy- 

 fonate on a trial basis. Band 1 pound of actual Dyfonate per acre at the base of the 

 plants, and cover the granules by cultivation. Rain following the treatment will en- 

 hance the possibility for success. If corn is to be planted in this same field next 

 year, apply 1 pound of actual Dyfonate per acre as granules in a 7-inch wide band just 

 ahead of the press wheel. 



FORAGE CROP INSECTS 



Grasshoppers can be found in many fence rows and ditch banks . Although the number 

 varies greatly, some small grasshoppers can be found everywhere. Occasional fence 

 rows and ditch banks average twenty or more per square yard. If the growth in such 

 areas continues to be luxuriant, many of these grasshoppers will remain there until 

 they are mature. But as soon as all the foliage is consumed, they will migrate in 

 search of food. If it is dry in July, weed growth will be retarded and the grass- 

 hoppers will migrate earlier than usual. 



To avoid problems later, we recommend that areas where there are concentrations of 

 grasshoppers should be treated with toxaphene. However, do not do this next to 

 fish-bearing waters. Malathion or carbaryl would be preferred near such waters. 



One no-till corn field has been reported as heavily infested, and the grasshoppers 

 are feeding on the corn. This was in sod last year; undoubtedly, grasshoppers depos- 

 ited eggs throughout the field. A spray of toxaphene at this time would provide ex- 

 cellent control. 



LIVESTOCK INSECTS 



House flies and stable flies are increasing in and around livestock barns and sheds. 

 These flies will be nuisances until late September or early October. Both species 

 spend the majority of their time resting on walls, ceilings, support posts, fences, 

 feed bunks, and other places and only a short time on the animals. Stable flies re- 

 duce beef or milk production by attacking the legs and bellies of animals where they 

 siphon blood, usually twice each day. House flies have little or no effect on pro- 

 duction, but are a general nuisance. 



Start control programs now, before house flies become too numerous. 



1. Practice good sanitation . Eliminate fly-breeding materials- -such as manure, rot- 

 ting straw, wet hay, and feed- -as often as possible. Spreading this refuse where 

 it can dry makes it unsatisfactory for depositing eggs. When manure cannot be 

 spread frequently, cover the pile with black plastic sheets, held down with old 

 tires , sandbags , or other weights . 



2. Apply a barn spray to the point of run-off on the ceilings and walls of all live - 

 stock buildings . Also spot-spray outside around windows and doors and along fence; 

 in the lot. TKe insecticides on the following page are suggested for this purpose 



