Date of this Version
Manglitz, G.R. and Hill, R.E. (1964) Seasonal population fluctuations and natural control of the sweetclover aphid (Research Bulletin: Bulletin of the Agricultural Experiment Station of Nebraska No. 217)
Because the potential of the sweetclover aphid for damaging sweetclover is well documented, yet damage occurs only occasionally under field conditions, it would appear that natural factors which depress midsummer populations are important in preventing greater damage and worthy of detailed study. Thus, this study was begun early in 1959 to investigate the natural factors which generally keep populations of this aphid below levels causing economic damage.