leaves and legumes are 2 to 3 inches high. Forage from the treated area must not be fed 

 j dairy animals or to animals being finished for slaughter. The first-year crop should 

 Dt be sold commercially or shipped interstate. 



4ALL GRAINS 



reck winter wheat now to determine the need for chemical weed control. You can control 

 Dst broadleaved weeds in winter wheat with 2,4-D. April is the time to do it. Wheat is 

 }St tolerant to 2,4-D after it has finished tillering in the spring and before it is in 

 le boot stage. 



f there is a legume underseeding , use no more than 1/4 pound of 2,4-D amine- -1/2 pint of 

 4-pound-per-gallon formulation. This rate will control most troublesome weeds, except 

 ild onion and garlic. 



o control wild onion and garlic, use 1/2 pound per acre of the 2,4-D ester . This rate 

 ill probably destroy legume underseedings and may damage wheat, but it will reduce aerial 

 ulblet formation of wild onion and garlic and will lessen the possibility of harvest-time 

 ockage . 



ead the label and follow all precautions. Federal regulations specify: "Do not forage 

 r graze treated grain fields for 2 weeks after treatment. Do not use treated straw for 

 ivestock feed." 



OME GARDEN 



Cultivation is the most-used and safest method of weed control for the home gardener. This 

 ust be done several times during the summer to be effective. Mulching is also quite effec- 

 ive, because it prevents light from reaching the weed seedlings. Such opaque materials as 

 raft papers, black polyethylene, ground corn cobs, weed-seed free straw, etc. are used, 

 n addition, mulching conserves moisture, makes for uniform soil temperatures, and keeps 

 he edible portions above ground clean. 



PLANT DISEASES 



MALL GRAINS 



outh of about Highway 50, Septoria leaf blotch has seriously infected or killed most of 

 he wheat leaves formed last fall. It is now moving onto the leaves formed this spring, 

 he wheat is about 8 inches tall in Johnson and surrounding counties. The dead fall leaves 

 erve as a source of inoculum for the newly formed leaves. 



o rust or powdery mildew is evident now on wheat in southern Illinois. 



here is some heaving damage. No serious loss is expected, since soil moisture is abundant 

 nd the injured wheat plants are starting to reroot themselves. Off-color leaves --reddish - 

 urple to purple- -are common, mostly because of the unseasonably cold weather. 



■arge yellow spots are also common in many wheat fields. This may be the result of overly 

 et soil and infection by Septoria. 



"or more information on Septoria Leaf Blotch and Glume Blotch of Wheat, write to the Depart - 

 ent of Plant Pathology, 218 Mumford Hall, University of Illinois Urbana-Champaign Campus, 

 ;, rbana, Illinois 61801. Ask for a copy of RPD No. 105 (Revised). 



