20 - 



Cultural Control 



Mechanical control methods include mowing, disking, and cultivating. 

 Mowing is very effective in controlling large crabgrass because of its 

 annual growth habit. However, this method must be repeated to control late 

 germinating crabgrass and other weeds. 



Chemical Control 



A good weed management system includes both knock-down herbicides and 

 residual herbicides. The knock-down herbicides include PARAQUAT CL^ 

 (paraquat) and ROUNDUP" (g 1 yphosa te) . Paraquat is a contact type herbicide. 

 It- requires uniform application for best results. On the other hand, 

 glyphosate is a systemic or translocated type herbicide. It can provide 

 effective control of perennial weeds under orchard situations. Do not apply 

 to trees less than two-years old. Prehavest interval is 14 days. Do not 

 allow spray to drift to green foliage, green bark, or suckers. 



The residual herbicides are those that provide weed control over a 

 period of time. These include DOWPON M^ (dalapon), KARMEX^ (diuron), 

 PRINCEP^ (simazine), CASORON^^ (d i ch loben i 1 ) , and SINBAR^ (terbacil). The 

 purpose of combining knock-down herbicides and residual herbicides is to 

 provide season-long control of annual weeds (grass and broadleaf species) 

 and perennial weeds. 



For more information regarding rates of herbicide application, com- 

 binations of herbicides, and specific comments on safety and precautions, 

 consult the latest edition of New England Chemical Weed Control for tree 

 f ru its. 



***** 



THE 1985 ALAr"^ SURVEY 



Wes ley R. Aut io 



Department of Plant and Soil Sciences 



University of Massachusetts 



As many of you know I conducted a survey of Massachusetts apple growers 



as to their use of Alar". The questionnaire was sent to all of the people 



on the tree fruit mailing lists of the regional fruit agents. It included 

 the following questions: 



1. Total acreage in apples? 



2. Acreage of bearing apples? 



3. Total acreage of Mcintosh? 

 '♦. Acreage of bearing Mcintosh? 



5. Percent bearing Mcintosh receiving Alar^ 



6. Percent of other cultivars receiving Alar^ 



7. How would the loss of Alar"^ affect you? 



