FOREWORD 



Research in the field of weed control with chemicals is con- 

 ducted by the United States Departnnent of Agriculture, State 

 agricultural experiment stations, and industrial organiza- 

 tions. Representatives of these groups meet periodically 

 in four regional conferences to discuss research develop- 

 ments in the field of chemical weed control and to formulate 

 suggestions on control practices. Some of the suggested 

 weed-control practices of the conferences are summarized 

 in this report in order to make them generally available to 

 agricultural workers in the various States who advise with 

 farm people. 



The effectiveness of herbicides is influenced by soil type, 

 temperature, rainfall, and other soil and climatic factors. 

 Because of this, the suggestions in this report should be 

 evaluated in terms of local conditions and local experience. 

 In a specific State, the recommendations of the agricultural 

 experiment station and the agricultural extension service 

 should be followed. Where such recommendations are not 

 available, the suggestions in this report should be looked 

 upon as a general guide. 



All chemicals included in this report, especially when 

 used on raw agricultural crops as defined under Public 

 Law 518, should be applied in accordance with the directions 

 on the manufacturer's label, as registered under the Federal 

 Insecticide, Fungicide, and Rodenticide Act, as to the crop 

 specified, in the amounts specified, and at the times 

 specified. 



