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Effect of Tricalcium Arsenate Formulations on Control of Annual Bluegrass (Poa annua)

Published online by Cambridge University Press:  12 June 2017

R.N. Carrow  and
P.E. Rieke
R.N. Carrow
Affiliation:
Crop and Soil Sci. Dep., Mich. State Univ., E. Lansing 48824
P.E. Rieke
Affiliation:
Crop and Soil Sci. Dep., Mich. State Univ., E. Lansing 48824
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Abstract

The influence of calcium arsenate (48% w/w tricalcium arsenate) rate, physical form, time of application, and phosphorus (P) rate on the growth of annual bluegrass (Poa annua L.) and Bray P1 extractable arsenic (As) were investigated. Both powder and granular formulations reduced clipping yields and enhanced extractable As levels. Higher initial soil As activity and significantly better control were obtained in one study when the powder formulation was used. Similar levels of control were achieved whether the As was applied prior to germination or to the mature turf. Soil P-levels did not influence the effectiveness of either As formulation.

Type
Research Article
Information
Weed Science , Volume 25 , Issue 4 , July 1977 , pp. 364 - 367
Copyright
Copyright © 1977 by the Weed Science Society of America 

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References

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