481 



infestation was noted. Peaks were not related to rainfall or to ground-litter 

 temperatures. During 1967, dispersal of the summer generation began in late 

 June and increased as the summer progressed. The greatest dispersal during 1967, 

 1968, and 1969 occurred from mid-August until well into September. Dispersal 

 also was nonitored during 1968 and 1969 using traps baited with male boll wee- 

 vils. Findings were similar to data recorded in the plots. Observations of 

 dissected overwintered weevils collected in the plots showed that diapause had 

 been terminated by the time of collection. Mature eggs appeared as the first 

 squares formed. Observations of dissected summer- and fall-generation weevils 

 from plots and traps indicated that both reproductive and diapausing individuals 

 disperse. 



950. ; Frisbie, R. E.; and Niles, G. A. 1978. A changing perspective: 

 Heliotihis in short-season cottons in Texas. Bull. Entomol. Soc. Am. 

 24: 385-391. 

 The foregoing paragraphs describe what is followed in Texas - rapidly fruiting 

 cottons, early-season control, "diapause weevil control", willingness to accept 

 outbreaks of Heliothis before blooming, a restrained approach in reacting to 

 later infestations of Heliothis - but it should be underscored that the success 

 of this strategy for cotton grown outside of the Plains country hinges oA early 

 planting. For cotton planted 30-45 days after optimum dates in eastern or 

 southern Texas, there is no greater assurance of production unassailed by Helio- 

 this (or boll weevils) than there was in the time of Mally or Qualntance or Brues. 

 A functioning short-season scheme with its inherent insect escape characteristics 

 means a crop planted early; a substantial delay in planting neutralizes the 

 benefits. 



