-57- 



La. A Study of a Species of Pythium in its Action on Sugar 



Cane * The effect of environment will be studied by growing 

 corn & cane under different conditions of temperature, mois- 

 ture &. acid, with Pythium both absent & present, & best tem- 

 peratures will be determined for infection by work with incu- 

 bators. 



PI. Path. 205 



La. To Develop New Varieties of Sugar Cane . To develop through 



the breeding of pedigreed sugar cane new varieties & strains 

 which will improve yields per acre. 

 Sugar Cane 370 Coop. ARS 



La. A Study of the Destructive and Beneficial Insects of Sugar- 



cane in Order to Develop Economical and Practical Measures of 

 Controlling the Harmful Species . To determine or further re- 

 fine & correlate control measures of the important insects 

 attacking sugarcane thru studies of biology of the pests & 

 their natural enemies & insecticidal, cultural, & biological 

 control practices for such insects as sugarcane borer, root- 

 stock weevil, aphids, wireworms, nematodes, springtails, sugar- 

 cane beetle, parasites & predators. 

 Ent. 581 Coop. ARS 



La. Utilizing Certain Properties of Agricultural Chemicals 



to Increase Yields of Sugarcane, or Sugar, per Acre . Learn 

 if sugarcane tonnage or sugar per acre yields can be increased 

 thru use of properties of Urea Form & Gibberellic acid. 

 Sugar Cane 681 



La. Studies on Sugarcane Diseases . To (1) study cause & con- 



trol of diseases of sugarcane with special emphasis on Phyto- 

 phthora rot, mosaic, red rot & root rot; (2) develop inform- 

 ation on resistance of cane varieties to major diseases of 

 sugarcane; & (3) investigate nature of seed cane failures & 

 stubble failures & develop methods of control. 

 PI. Path. 766 



La. The Ratoon Stun.ting Disease of Sugarcane . To determine 



(1) presence of ratoon stunting virus or a similar one in La. ; 



(2) role of virus in degeneration of varieties which apparently 

 are senescent; (3) if hot water treatment will permit develop- 

 ment of virus free seed stocks; (4) all modes of spread of the 

 disease to aid control; (5) a means other than inoculation to 

 identify virus in stalks either not obviously stunted or in area 

 where environment is not productive of good growth: (6) inherit- 

 ance of resistance to obtain production of new resistant varie- 

 ties; & (7) environmental factors responsible for severity of 

 the disease. 



PI. Path. 773 



