Can you still eat the tomatoes or grapes if they have been injured by 2,4-D? The 

 answer is "yes," if the fruits are still normal, even though the leaves are injured. 

 A tiny amount of 2,4-D is enough to cause foliar damage, but larger amounts are re- 

 quired to injure the fruit. The amount necessary to injure a human consumer is much 

 greater. 



But be a good neighbor, don't spray 2,4-D esters --especially high-volatile ester- - 

 near a man's vineyard or home garden. 



MARIHUANA 



Marihuana is now classified as a noxious weed in Illinois. It is against the law foi 

 landowners to have it growing on their property. If landowners take this obligation 

 seriously, we will have fewer pickers going to pot in Illinois. 



Our slogan is "Swat Pot." Early control is most effective, but better late than neve 

 Some plants are already producing seed. Pulling, mowing, or tillage is still an ef 

 fective way to prevent further seed production. 



Based on earlier research this year, 2,4-D ester, 2,4,5-T, silvex, Banvel, and amitro 

 T were effective and probably would still be helpful if applied soon. Although 2,4-D 

 can be effective if applied early, 2,4,5-T is a better choice now on the tougher plan 



Do not use 2,4,5-T around homes or on lakes, ponds, and ditch banks. Silvex does not 

 have these restrictions and may be slightly more effective than 2,4,5-T on marihuana.; 

 Banvel has been effective, but be careful to avoid injury to nearby susceptible plant 



If you use 2,4-D, 2,4,5-T, silvex, or Banvel use about 1 pound per acre. Amitrole-T ' 

 looked good earlier at a rate of 2 to 4 pounds [1 "to 2 gallon) per acre. Tordon give 

 good control of marihuana, but risk of injury from drift or soil residue to soybeans 

 or other susceptible plants discourages its use in many areas . 



i 



SOYBEANS 



* 



A lot of soybean fields look quite clean this year. The delayed planting, use of 

 herbicides, rotary -hoeing, and good cultivation have all contributed. 



Now is a good time to chop that volunteer corn out of soybeans . Relatively few field 

 have a serious problem. 



As the beans stop growing, some of the taller-growing weeds (like velvet- leaf) will 

 become more evident. Pulling these to prevent seed production will be well worth- 

 while in many fields. Pulling may not sound very "glamorous," but is still practical 

 and economical in many fields. (And it will give the kids something to tell their 

 grandchildren.) 



READ THE LABEL AND FOLLOW ALL PRECAUTIONS 



This weekly report was prepared as follows: 



INSECTS: H.B. Petty, Steve Moore, Roscoe Randell , Don Kuhlman, and Tim Cooley , Collet 

 of Agriculture, University of Illinois at Urbana-Champaign , and the Illinois Natural 

 History Survey, 



WEEDS: M.D. McGlamery and E.L. Knake , Department of Agronomy. 



AG COMMUNICATIONS: Del Dahl . 



The information for this report was gathered by these people, staff members, county 

 Extension advisers, and others, in cooperation with the USDA Agricultural Research 

 Service, Plant Pest Control Branch. 



