SEEDBEDS AND TRANSPLANT BEDS 



Control of Most Annual and Perennial Weed s 



1. Use methyl bromide at 1 pound per 100 square feet, applied under an 

 airtight plastic cover as described on the chemical label. The cover may be 

 removed after 24 hours. Methyl bromide does not persist in the soil, and 

 plantings maybe made safely -within 72 hours after removing the plastic cover. 



2. Soil fumigants are no^w available for preplanting use as drenches -without 

 plastic covers. DMTT and SMDC are examples of these materials. Other soil 

 fumigants and steam sterilization also may be used effectively to control weeds 

 in seedbeds and transplant beds. 



Control of Most Weeds Germinating in Upper 4 Inches of Soil 



Use calcium cyanamide at 50 to 75 pounds per 1,000 square feet, applying 

 it to the surface and working it into the upper 2 to 3 inches of soil. Seeding 

 or transplanting after using calcium cyanamide should be delayed for 3 to 6 

 w^eeks to avoid residual toxic effects of the treatment. 



- 33 



