Sugar Beet Nematode 



How to Check Multiplication of Nematodes 

 Field Surveys 



All suspected fields should be thoroughly examined, so that the 

 exact location and extent of infested areas may be known. That such 

 surveys of suspected lands be made is of the greatest importance. 



Local Treatment 



If the infested areas are small, local treatment may be all that is 

 necessary. All plants on the area should be pulled, together with those 

 from a strip several feet wide all around it. These should be destroyed 

 by burning on the spot. 



A trench about one foot deep and one foot wide should then be dug 

 around the infested spot and this filled with quick-lime. The surface 

 of the infested area should be covered with lime an inch or two deep and 

 this thoroughly mixed with the soil. Frequent mixing of the limed soil 

 will add to the effectiveness of the treatment. 



Pasturing with Sheep 



Pasture the beet tops grown on infested land to sheep, rather than to 

 other stock, as the nematode in the tops eaten will thus be destroyed, and 

 will not be returned to the soil through the manure. 



Rotation 



The sugar beet nematode infests the roots of many weeds and cul- 

 tivated crops. The following list of plants known to be subject to attack 



is taken from Farmers' Bulletin No. 772 of the U. S. Department of 

 Agriculture. 



Alfalfa Dandelions Pinks 



Allseed Foxtail, Green Potatoes 



Barley Hemp Radishes 



Beans, Dwarf Pea Hops Rape 



Beans, Lima Kale Rutabaga 



Beets, Garden Kohl-rabi Rye 



Beets, Sugar Lentils Sorghum 



Cabbage Lupine, Yellow Spinach 



Cabbage, Chinese Meadow-grass, Annual Sunflower 



Cauliflower Meadow Oat-grass, Tall Timothy 



Celery Mustard Turnips 



Clover, Crimson Oats Vetch 



Clover, White Parsnips Wheat 



Corn Peas, Garden 



Cress Peas, Sweet 



In the above mentioned bulletin the author lists the following crops 

 as being available for Colorado and neighboring states for rotation on 

 infested land : 



Cow Peas 



Soy Beans 



Sweet Clover 



Rye 



The Millets 



Tomatoes 



Asparagus 



Lettuce 



Cantaloupe 



Barley 



Wheat 



Cucumbers 



Potatoes 

 Potatoes are often slightly injured. 



63 



