35$ Diseases of Truck Crops 



Wild Carrot (Daucus carsta) , wild parsnip (Pastinaca 

 sativa), and poison hemlock (Cornium maculatum) . 

 All of these weeds should be eradicated by clean cul- 

 ture. The first two especially help to carry the 

 fungus of early blight, Cercospora apii. 



