12 



Pa. Weed Control in Ornamental Plantings . Learn: (l) most satis- 



factory methods, materials, and techniques for control or eradica- 

 tion of weeds and other undesirable plant growth in ornamental 

 plantings; (2) tolerances of ornamental plants to various concen- 

 trations and kinds of herbicides. 

 Hort. 13U6-E 



Pa. Weed Control in Vegetable Crops . Learn: (1) most satisfactory- 



methods, materials, and techniques for control or eradication of 

 weeds and other undesirable plants in vegetable crops; (2) effects 

 of various concentrations of herbicides on vegetable crops; (3) 

 effect of climatic factors, soil moisture and stage of growth of 

 crops and weeds on the action of the herbicide. 

 Hort. 13U6-F 



R. I. Potato Culture. — a. Potato Breeding and Testing, b. Pre- 

 Harvest Weed Control in Potatoes, c. Sod Crops for Use in Crop 

 Rotations with Potatoes' ! To (1) test new potato varieties and 

 seedlings as they are developed in natural breeding program, in 

 order to determine value for local conditions; (2) determine rela- 

 tive value of different chemical preparations for use as a spray 

 on weedy potato fields, just previous to harvest, in order to 

 kill weeds and potato vines; and (3) test comparative value of 

 timothy, red top, timothy and red top, timothy and alsike, timothy 

 and red clover, and red top and alsike as sod crops to be grown in 

 a h-year rotation of 2 years of potatoes and 2 years of sod crops. 

 Agron., PI. Path. 201 



S. C. A Study of the Effect of Herbicides on Weeds in Some Orna- 

 mental Nursery Stock . To learn (1) herbicides most effective in 

 weed control and, [2~) which are least injurious to nursery stock. 

 Bot., Hort. 90 



Utah Control of Weeds in Horticultural Crops . (1) Screen promis- 

 ing herbicides for weed control in vegetable, fruit, flower, and 

 vegetable seed crops. (2) Learn effect of the more promising her- 

 bicides on yield and quality of horticultural crops. (3) Test and 

 develop equipment adaptable to applying herbicides to small acreage. 

 Agron., Hort. £05> 



W. Va. Effects of Herbicides on Tree Fruits and Small Fruits . To 



determine whether herbicides that are recommended for weed control 

 in orchards and small fruit plantings can be (1) safely used yearly 

 (or more frequently, if specified by recommendations) for several 

 seasons, (2) whether orchardist or home owner is likely to suffer 

 injury to his plants or fruit if excessive rates are applied. 

 Hort. 116 



Forage Crops 



Ariz. Shrub Invasion-Forage Production Inter-Relations on Arizona 

 Rangelands . Learn site characteristics affecting potential shrub 

 invasion and forage production. 



Agron., Range Management 292 Coop. FS 



