2$ 



Idaho Studies on the Ecology and Propagation of St, Johnswort 

 Insects in IdahoT To (1) determine if 3 recently introduced 

 species of St. Johnswort feeding insects can become established 

 in Idaho ; (2) conduct ecological and life history studies on all 

 introduced St. Johnswort feeding insects; and (3) determine role 

 of each St. Johnswort insect in control of this weed in Idaho. 

 Ent. 231 Coop. ARS, FS 



Ky. Yield, Seasonal Activity, and Persistence in the Soil of 



Different Types of Bulbs of Wild Garlic, Allium vine ale , L., in 

 the Northern Range of its Adaptation . To learn (1) relative 

 yield in numbers of different types of reproductive bulbs of wild 

 garlic, (2) seasonal rate of germination and time when new dor- 

 mant bulbs in soil. 



Agron. 173 (S-18) 



Minn. Ecology and Control of Brush and Other Forest Vegetation . 



(1) Study life history and successional ecology of major brush 

 species basic to development of control measures. (2) Develop 

 techniques for controlling forest vegetation leading to desired 

 management goals for forestry, wildlife, or agricultural purposes. 

 (3) Predict trends in forest succession as an aid in planning use 

 of forest and wildlife resources. 



For. 1918 Coop. ARS 



Minn. Weed Studies. 1. Taxonomy of Weeds. 2. Ecology and Physiology 

 of Weeds . To (1) elucidate pertinent phases of the weed problem, 



(2) formulate control measures, (3) evaluate control measures, and 

 (h) make recommendations through proper channels to put findings 

 into practice. 



Agron., Bot., For., Hort., PI. Path. 2201-1 & 2 



Miss. Studies of the Physiology and Life Cycles of Weeds in Relation 

 to Chemical Weed Control^ (1) Study life cycle of major weeds of 

 state as Allium canadense , Cyperus rotundus , Solanum carolinense , 

 Convolvulus spp., Rumex, spp., Amaranthus spp., Digitaria spp., 

 etc.; factors involved in various developmental stages to include: 

 time of developmental stages of plant, seed germination and 

 vitality; studies of effects of depth of seed, rhizomes, etc. (2) 

 Investigate some physiological functions as: respiration, trans- 

 location, chlorophill synthesis, use of food reserves, studies of 

 auxin and anti-auxin activity. (3) Develop ways to grow named 

 weeds in greenhouse, with emphasis on liquid and sand culture. 

 PI. Path. HL-19 



N. Mex. Ecology of Creosote Bush (Larrea divaricata) on Desert Grass- 

 land Range . To determine (1) influence of good and poor cover of 

 perennial grasses on establishment of creosote bush; (2) influence 

 of grazing by domestic livestock and range rodents, and competition 

 by creosote bush on restoration of desirable forage grasses to de- 

 teriorate range; and (3) certain autecological and life history 

 characteristics of creosote bush. 



Anim. Husb. $1 (See W-25 in Part 10) 



