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Herbicidal Interactions of Potassium Azide with Calcium Cyanamid

Published online by Cambridge University Press:  12 June 2017

S. R. Colby  and
R. W. Feeny
S. R. Colby
Affiliation:
Agronomy Department, University of Maryland, College Park
R. W. Feeny
Affiliation:
Agronomy Department, University of Maryland, College Park
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Abstract

The herbicidal activity of potassium azide and calcium cyanamid, applied singly and in combination, was evaluated in greenhouse and field experiments. In the greenhouse, the combinations were synergistic against several plant species including yellow nutsedge (Cyperus esculentus L.) and crabgrass (Digitaria sanguinalis (L.) Scop). The combinations also were synergistic in two field experiments at different locations. In the field, the combinations reduced the number of weed seeds germinating from treated soil over a 6-month period; potassium azide or calcium cyanamid applied singly were not effective. In the laboratory, calcium cyanamid reduced the rate of disappearance of potassium azide from the soil.

Type
Research Article
Information
Weeds , Volume 15 , Issue 2 , April 1967 , pp. 163 - 167
Copyright
Copyright © 1967 Weed Science Society of America 

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References

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