- 36 - 



N. J. Action of Antibiotics on Plant Pathogens and Their Hosts . 

 To (l) investigate mode of action of antibiotics and additives 

 alone and in combination on plant pathogens and their hosts; 

 (2) develop additives designed to increase antibiotic activity. 

 PI. Path. 479 



N. Y. The Basic Requirements and Design Principles of Mechanical 

 (Cornell) Equipment for Control of Insects, Diseases, and Weeds . To study 



the requirement of mechanical equipment for pest control practices 

 with the objective of determining basic information necessary 

 to design new or to modify existing available equipment for 

 practical use. To design and construct equipment for experimental 

 use for the purpose of determining practical control measures 

 and suitable machinery. Assemble information necessary to 

 design sprayers for weed control in row crops, open fields, 

 and lawns. 



Agr. Engin., Veg. Crops, Ent., PI. Path., Hort., 



Farm Pract. 32 



N.Y. The Mist Concentrate Method for Applying Fungicides to Fruit 



(Cornell) Trees, with Consideration Given to Spray Formulations. Phyto- 



toxicity, and to Modification of Application Equipment . To (l) 

 gain more specific data on the formulation of the spray mixture 

 and its influence on both the efficiency of the methods for 

 disease control and on phytotoxicity, for instance as savings in 

 amount of toxicant materials required, and study of formulations 

 with respect to adjuvants added; (2) learn feasibility of con- 

 centrating newer fungicides as they become available, as many 

 have already proved effective but have not been adequately 

 tested in the mist concentrate method, nor has the method been 

 adequately tested on all fruit crops with the materials which 

 are effectively applied to a few; and (3) study needed modifi- 

 cations in the equipment, as growers are anxious that the fixed- 

 outlet machine developed under this project be constructed 

 so that the spray may be delivered to both sides of the machine 

 at once, which will require research to learn if it is feasible, 

 and if so, how best to accomplish it; also to reduce hydraulic 

 pressure on the spray and still obtain adequate atomization. 

 PI. Path., Agr. Engin., Ent., Pomol. 126 



N. Y. The Control of Fungous, Bacterial, and Virus Infections of 

 (State) Host Plants by the Absorption of a Chemotherapeutant into the 



Host Tissues, and by Translocation of the Chemotherapeutant to Other 

 Parts of the Plant* To discover non-phytotoxic materials that 

 will be taken up by the plant in sufficient quantities to 

 immunize or increase resistance of the plant to diseases incited 

 by fungi, bacteria and viruses. 

 PI. Path. 9 



