71 



equ.'.valent particle deposition within the plant, but the rotary disc device 

 gave more uniform coverage across the swath. •. -,. 



127. ; Smith, D. B.; and Lloyd, E. P. 1967. Efficiency of a flail-type 

 machine in destroying cotton squares deposited on soils varying in 

 surface moisture and roughness. U.S. Agric. Res. Serv. [Rep.] ARS 

 A2-129, 9 pp. 



Results of the tests allow us to draw the following conclusions: (1) The 

 efficiency of the flail machine in picking up fallen squares decreased as 

 the moisture in the surface of the soil or the roughness increased; (2) 

 moisture of soil surface affected efficiency of the machine in picking up 

 fallen squares more than roughness of the surface; (3) the flail-type machine 

 picked up enough of the fallen squares (88.1 percent) and killed enough 

 immature weevils (94.8 percent) to provide satisfactory control of boll 

 weevils. However, groundspeed should be increased to above the 3 m.p.h. used 

 in these tests. 



128. Byrd, T. 1969. Ancient weevil discovered in old cotton boll. N.C Agric. 

 Exp. Stn. Res. Farming 27 (winter-spring): 13. 



Would you believe a boll weevil - one thousand years old? It's true, say 

 entomologists with the U.S. Department of Agriculture. They are referring 

 to a boll weevil found in some old cotton from Mexico by Dr. S. G. Stephens, 

 a geneticist at N.C. State University. Dr. Stephens was examining cotton 

 fragments that USDA scientists had obtained from an archeological excavation 

 in Oaxaca, Mexico. And, lo and behold, there lay a boll weevil entombed in 

 an empty seed hull. Radioactive carbon 14 dating and the presence of Indian 

 pottery in the same location "firmly date the cotton" from about the year 

 A.D. 900. 



