22 



Nebr . Development of Weed Control Principles and Methods for 

 Western" Nebraska Agriculture . (1) Establish principles and 

 develop methods for control or eradication of: bur ragweed 

 ( Franseria tomentosa ) and (F. discolor ); field bindweed 

 ( Convolvulus arvensis ) ; leafy spurge ( Euphorbia esula) ; and 

 Russian knapweed ( Centaurea repens ). ( 2 ) Study and devise 

 economical methods for control of undesirable vegetation 

 associated with irrigation and irrigated crops, (3) establish 

 rotation studies for testing and comparing various crop se- 

 quences, tillage methods, and chemical treatments alone and in 

 combination for their value in weed control on fallow land. 

 Agron. 5l6 Coop. ARS 



N. Y. Control of Nutgrass in Agricultural Regions . To control 

 (Cornell) nutgrass with chemicals to make it possible to again grow row 



crops or to continue to grow them with less reduction in yields 



and less cost of weed control. 

 Veg. Crops 165 



N. C. Weed Control in Corn, Sorghum, Tobacco, Small Grain, Horti- 

 cultural Crops, and the Specific Control of Bermuda Grass and 

 Wild Garlic . To develop (1) field production practices to better 

 control weeds in corn, sorghum, tobacco, small grain, and horti- 

 cultural crops, and better control methods for Bermuda grass and 

 wild garlic; and (2) basic principles and practices involved in 

 satisfactory farm use of above methods, to learn facts needed to 

 understand failures, if and when they occur, and methods of pre- 

 venting such failures. 

 Farm Crops 5>9 



N. C. The Development of Principles and Practices for the Control 

 of Weeds in Cotton, Peanuts, Soybeans, Forage Crops, Turf and 

 for the Control of Nutsedge, Johnson Grass and Woody PlantsT " To 

 develop (1) for North Carolina reliable, practical and economical 

 practices for solution of above weed problems; and (2) principles 

 of weed control particularly as related to weed control practices 

 in North Carolina. 



Agron., Field Crops 61 



N. Dak. Control of Quackgrass, Field Bindweed, Leafy -Spurge, Peren- 

 nial Sow Thistle and Canada Thistle by Means of Competitive Crops 

 Supplemented by Selective Herbicides . To determine the ability 

 of various grasses to suppress, control or eradicate serious 

 perennial weeds of North Dakota. 

 Agron., Bot. 9-1 Coop. US DA 



Okla. Control of Weeds in Cultivated Crops . Develop more efficient 

 methods for control of annual weeds in cultivated crops. (2) 

 Learn effect of various herbicides on growth, yield and quality of 

 field crops. (3) Develop more efficient and economical methods 

 for control of perennial noxious weeds. 

 Agron. 933 (NC-10) 



