. Bulletin. Natural history; Natural history. II 384 Illinois Natural History Survey BuLLETiNr Vol. 31, Art. 9 widespread use of highly persistent organochlorine pesticides with little or no prior understanding of their fates in the total environment, has prompted both scientific and lay concern about a screening methodology which could serve as a simple early-warning system against potentially undesirable or haz- ardous effects of the large-scale use of new agricultiiral chemicals or com- binations of them. The wait-and-see system, followed in the use of aldrin, dieldrin, heptachlor, and chlo
. Bulletin. Natural history; Natural history. II 384 Illinois Natural History Survey BuLLETiNr Vol. 31, Art. 9 widespread use of highly persistent organochlorine pesticides with little or no prior understanding of their fates in the total environment, has prompted both scientific and lay concern about a screening methodology which could serve as a simple early-warning system against potentially undesirable or haz- ardous effects of the large-scale use of new agricultiiral chemicals or com- binations of them. The wait-and-see system, followed in the use of aldrin, dieldrin, heptachlor, and chlordane and requiring a generation or more to dis- tinguish serious environmental pollu- tion, is demonstrably inadequate and has resulted in such disasters as the widespread contamination and seizure of milk supplies, the destruction of mil- lions of contaminated chickens, and the devastation of valuable fishing in- dustries. A recent comprehensive study. Pesti- cide Use on the Nonirrigated Crop- lands of the Midwest ( EPA 1972a) recommended that "a massive, interdis- ciplinary research effort be mounted to clarify the environmental behavior of major pesticides which are expected to continue in use for the forseeable ; Information needed includes the fates of pesticides in the environ- ment after application; routes of me- tabolism, degradation, and disappear- ance; natures of the ultimate break- down products; effects of long-term exposure of ecosystems to low-level residues; and interactions with other chemicals in the environment. It will be necessary to establish an order of priority among products to be investi- gated in this fashion. The investigations reported here rep- resent an effort by the State of Illinois, through the Illinois Natural History Survey and the University of Illinois, to assume the responsibility for the comprehensive research so urgently needed on the total environmental fates of new pesticides. SORGHUM ESTIGMENE PHYSA. Fig. 1 .—
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Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectnaturalhistory
