their heads and anal segments in a characteristic alert pose. Fall 

 webworms also feed in colonies o£ many individuals, but enclose 



their feeding area in a web. The mature caternillar is about an inch 

 long and covered with white hairs. To control these worms, remove 

 the colony and destroy it. A heavy foot works well. Don't waste 

 insecticides on them. 



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



GETTING THE MOST OUT OF STRAWBERRY HERBICIDES 



Dominic A. Marini 

 Southeast Regional Fruit and Vegetable Specialist 



At the present time, Dacthal* and chloroxuron, (Norex* or 

 Tenoran*) are the most widely used materials for controlling weeds 

 in strawberries in Massachusetts. They are useful tools, but like 

 all tools, must be properly used to get the most out of them. 

 They are not cure-alls; they have their limitations, but when these 

 limitations are understood and when they are used properly, these 

 herbicides can greatly reduce the amount of hand labor required to 

 control weeds in strawberries. 



Dacthal* is a pre-emergence weed killer. It kills only ger- 

 minating weed seeds, and must come in contact with seeds as they 

 start to germinate. In order to come in contact with germinating 

 weed seeds, Dacthal* should be applied to soil that is moist and 

 it must be followed by about 1/2 inch of water from rain or irriga- 

 tion to move it down into the soil ivithin 4 or 5 days after appli- 

 cation. This is the reason Dacthal* is not effective in dry wea- 

 ther. 



To make certain that Dacthal* comes in contact with germinat- 

 ing weed seeds, some growers apply it before setting plants and in- 

 corporate it shallowly into the soil with a disc harrow, or spike- 

 tooth harrow, or finger weeder. 



Chloroxuron on the other hand, is both a pre-emergence and 

 post-emergence weed killer. It kills germinating weed seeds and 

 weeds that are already out of the ground. Most broadleaved weeds 

 up to 2 inches in height are controlled with post-emergence appli- 

 cation with the exception of galinsoga, which must be treated be- 

 fore it is 3/4 inches tall. 



Dacthal* is useful early in the season since it does not injure 

 newly set strawberry plants. It may be applied before or immedi- 

 ately after setting. Chloroxuron, however, may injure newly set 



*Trade name 



