GALINSOGA CONTROL IN STRAWBERRIES WITH CHLOROXURON 



Dominic A. Marini 

 Regional Fruit and Vegetable Specialist 



Galinsoga has become one of the most serious weed problems in 

 Massachusetts since most herbicides fail to control it. Two of the 

 herbicides used on strawberries, Dacthal* and diphenamid (Dymid* 

 or Enide*) , do not control it and are not of much value on farms 

 heavily infested with Galinsoga. 



Chloroxuron (Norex* or Tenoran*) , in pre-emergence or early 

 post-emergence applications, provided effective control in 1974 

 tests conducted in cooperation with Nor-am Chemical Co., manufac- 

 turer of Norex*. Tests were conducted in several Massachusetts lo- 

 cations. The results of one test are as follows: 



Galinsoga plants per square foot 



Treatment 1 2 3 Average 



Treatments were applied on May 26, when weeds were up to 3/4 

 inch in height. Weed counts were made on June 19. 



The results of this and other tests showed that chloroxuron 

 can control Galinsoga effectively in pre-emergence or post-emergence 

 applications up to 3/4 inch in height. Plants from 3/4 to 1-1/2 

 inches in height are stunted but outgrow it; the larger the plants 

 the less stunting occurs and the sooner they outgrow it. 



*Trade name 



*************** 



POMOLOGICAL PARAGRAPH 



Containers for strawberry shipment . -P.M. Porter and W.J. Tietjen, 

 of the U.S. Department of Agriculture, report that in simulated 

 shipping tests, clear polystyrene, foam polystyrene and paper pulp 

 pint baskets caused significantly less cutting and bruising of 

 strawberries than the widely used plastic mesh baskets (HortScience 

 8:August, 1973). The pressure and/or movement of berries against 

 the multiple cutting surfaces on the sides and bottoms of the plas- 

 tic mesh pint baskets caused many cuts. The type of basket had 



