Table 3. Grass control and alfalfa establishment with pronamide and 



1 . a 

 paraquat at seven locations. 



Treatment 



Herbicide 



Rate 



Grass 

 control 



Alfalfa content, 

 first harvest 



Pronamide 



Pronamide 



Pronamide 



Pronamide 

 +Paraquat 



lbs/acre 



1.0 



2.0 - 2.2 



3.0 - 3.3 



2.0 - 2.2 

 0.25 - 0.50 



33 

 64 

 86 



86 



38 

 59 

 71 



78 



Grasses were yellow-green to green and at least 5 inches high when 

 treated. Ten seedings were made at five different locations. 



Table 4. Responses to spring-applied herbicides at seven locations, 



Treatment 



Herbicide 



Rate 



Grass percentage. Alfalfa percentage, 

 first harvest spring following seeding 



Avg. 



Range 



Ave. 



Range 



Glyphosate 



Glyphosate 



Glyphosate 



Glyphosate 



Paraquat 



Split paraquat 



Pronamide (fall) 

 + Paraquat (spring) 



lbs/acre 

 0.7 to 1.0 

 1.3 to 1.5 



2.0 



2.7 



0.5 



0.25 + 0.25 



2.0 

 0.25 



17 



7-26 



73 



64 - 82 



lbs/acre. Even 0.7 lbs/acre was often sufficient to cause injury to 

 nearly all grass topgrowth. However, considerable regeneration from 

 underground growing points occurred at rates under 1.0 lbs/acre. The 

 somewhat better grass control obtained with 2.0 lbs/acre of glyphosate 

 generally did not improve alfalfa establishment over that from rates 

 of 1.3 to 1.5 lbs/acre, although it did slightly increase the ratio of 



