IOO HORTICULTURE BY IRRIGATION. 



destroyed by frequent cutting of the crop infested. Sometimes, however, 

 if thoroughly established, says an authority, " nothing short of digging 

 up the crop infested and burning the whole will get rid of it." But the 

 best plan is to be sure that the seed sown is free from this pest. Alfalfa 

 seed is about two lines long and one and one-fourth wide ; while dodder 

 seeds are not more than half the size ; hence, if alfalfa or clover seed is well 

 sifted before sowing, the dodder will be easily separated. Here again is 

 another forcible illustration of the importance of obtaining clean, pure 

 seed for sowing. 



