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Relation of Triazine Residues to Fungal and Bacterial Colonies

Published online by Cambridge University Press:  12 June 2017

Rodney J. Fink ,
O. Hale Fletchall  and
Oscar H. Calvert
Rodney J. Fink
Affiliation:
Murray State University, Murray, Kentucky
O. Hale Fletchall
Affiliation:
University of Missouri, Columbia, Missouri
Oscar H. Calvert
Affiliation:
University of Missouri, Columbia, Missouri
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Abstract

Rates of 0 and 5 lb/A of 2-chloro-4-ethylamino-6-isopropylamino-s-triazine (atrazine) or 2-chloro-4,6-bis(ethylamino)–s-triazine (simazine) were combined with O and 200 lb/A of nitrogen fertilizer as preemergence applications on plots planted to corn (Zea mays L., var. Mo. 880) in May of 1964 and 1965. Soil samples collected in December, 1965, and again in February, 1966, were plated on Difco potato dextrose agar and nutrient agar to determine the growth of fungal and bacterial colonies. There was no difference in the total number of fungal colonies grown on media seeded with soils from the field studies, yet variation in individual species occurred. The number of bacterial colonies increased on plates seeded with soil from plots treated with 200 lb/A of nitrogen plus 5 lb/A of simazine but not from simazine-treated soil without nitrogen.

Type
Brief Papers:
Information
Weed Science , Volume 16 , Issue 1 , January 1968 , pp. 104 - 105
Copyright
Copyright © 1968 Weed Science Society of America 

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References

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