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AG RIC UL TURAL EXTENSION SERVICE Afr{ ,<"·<,'>·

, -> ',' "\, '. '' ~'¥) AGRICULTURAL CHEMICALS FACT SHEET No. 6-1978 Chemicals for'Weed Cop: GERALD R. MILLER . \~:::sr" This fact sheet is intended only as a summary of suggested Herbicide names and formulations alternative chemicals for weed control in corn. Label informa­ Common Trade Concentration and tion should be read and followed exactly. For further informa­ name name commercial formulation 1 tion, see Extension Bulletin 400, Cultural and Chemical Weed Control in Field Crops. Alachlor Lasso 4 lb/gal L Lasso 11 15% G Selection of an effective chemical or combination of chemicals Atrazine AAtrex, 80% WP, 4 lb/gal L should be based on consideration of the following factors: others 80%WP -Clearance status of the chemical Atrazine and propachlor AAtram 20% G -Use of the crop Bentazon Basagran 4 lb/gal L -Potential for soil residues that may affect following crops Butylate and protectant Sutan+ 6.7 lb/gal L -Kinds of weeds Cyanazine Bladex 80% WP, 15% G, 4 lb/gal L -Soil texture Dicamba Banvel 4 lb/gal L -pH of soil Dicamba and 2,4-D Banvel-K 1.25 lb/gal dicamba -Amount of organic matter in the soil 2.50 lb/gal 2,4-D -Formulation of the chemical EPTC and protectant Eradicane 6.7 lb/gal L -Application equipment available Linuron Lorox 50%WP -Potential for drift problems Metolachlor Dual 6 lb/gal L Propachlor Bexton, 65% WP, 20% G, 4 lb/gal L Ramrod 2,4-D Several Various 1 G = granular, L = liquid, WP= wettable powder Effectiveness of herbicides on weeds in corn 1 Preelantin9 Preemer9ence Postemer9ence c 0 "'I- ? +-' Cl) Cl) X _c _c Cl) I- +-' +-' I- I- al 0 Q) Cl) 0 0 0 Cl) Cl) _c C c_ _c 0 - c_ c_ CC w- ._, u'o C "Cl - <:t' >- ::, (/) >- +-'

DO NOT USE THIS FACT SHEET AFTER 1978

Issued in furtherance of cooperative extension work in agriculture and home economics, acts of May 8 and June 30, 1914, in cooperation with the U.S. Department of Agriculture. Roland H. Abraham, Director of Agricultural Extension Service, University of Minnesota, St. Pa'ul, Minnesota 55108. The University of Minnesota, including the Agricultural Extension Service, is committed to the policy that all persons shall have equal access to its programs, facilities, and employment without regard to race, creed, color, sex, national origin, or handicap.