Under some conditions, AAtrex-oil -water emulsions have resulted in corn injury. Do not use 

 oil in AAtrex sprays when the corn is under stress or when it is wet and succulent. Do not 

 treat breeding stock or inbred lines with sprays of AAtrex-oil. Do not add 2,4-D to the 

 AAtrex -oil -emulsion. 



If AAtrex is applied postemergence at higher than 2-1/2 pounds per acre of 80W, or if it 

 is applied later than mid- June, plan to plant corn in the field again next year. Do not 

 graze treated areas or feed treated forage to livestock for 21 days following applica- 

 tion. 



PLANT DISEASES 

 WHEAT 



There is less disease in wheat this year than in any of the past 10 or 15 years. 



Septoria leaf blotch has not spread upward from the lowest leaves. Losses from this diseas 

 should be very minor this year. 



Powdery mildew is abundant in scattered fields and will cause lodging and yield reduction. 



Leaf rust should start appearing during the next week or ten days. Trace amounts are now 

 present in Arkansas and Missouri . Leaf rust development is later than normal in these 

 states, and we anticipate that it will be late in Illinois. 



Loose smut will be evident as the heads emerge from the boot. 



ALFALFA 



Leaf spot diseases are causing defoliation of alfalfa and clovers. Early harvest will 

 prevent some leaf loss for this and future cuttings . . 



LAWNS 



Leaf spot and melting -out are common problems, ones that are now serious in some lawns. 

 Brown or purple spots are evident on the leaves. Later, the centers become light brown 

 and the dark-purple borders are quite distinct. Leaf sheaths are turning brown, causing 

 death of the leaf blades and giving diseased lawns a brownish undercast. Later, the crowns 

 rhizomes, and roots will turn brown. During hot weather, the plants will die in large 

 irregular areas . 



Cultural control practices help keep this disease complex in check. Fungicides such as 

 Ortho Lawn and Turf Fungicide, Daconil 2787, Dyrene, defolatan, folpet (Phaltan) , maneb 

 (Fore), or zineb are effective when applied on a regular, protective schedule. But they 

 will do little good now if leaf spot and melting-out are severe. 



Stripe smut is prevalent and is serious in scattered turf areas. Look for pale-green to 

 yellowed plants occurring in patches. Infected plants are stunted and have curled or 

 shredded leaves with black stripes. Such plants will probably die during the hot, dry 

 weather. 



At present, about all we can suggest is to water and fertilize heavily infected lawns. 

 These practices promote vigor and help keep smutted plants aliveT If smut is a minor 

 problem (only a few scattered plants that are difficult to see), let the lawn dry out. 

 The smutted plants will die and healthy plants will then replace them. 



IP 



