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Influence of Environmental Factors on the Efficacy of Preemergence Diuron Applications

Published online by Cambridge University Press:  12 June 2017

John E. Bowen
John E. Bowen*
Affiliation:
C. Brewer and Company, Limited, P. O. Box 1801, Hilo, Hawaii
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Abstract

Environmental and physical factors influencing the effectiveness of preemergence applications (4 lb/A) of 3-(3,4-dichlorophenyl)-1,1-dimethylurea (diuron) were evaluated under field conditions for 10 Hawaiian sugar cane (Saccharum officinarum L.) plantations. Rainfall, soil pH, organic composition, time lapse between field harvest and herbicide application, and maximum temperature had a significant effect on the resultant period of weed control. The data from 295 field tests conducted over a 10-year period then were subjected to multiple regression analysis. The prediction equation derived via these calculations was sufficiently accurate to justify its application to the Hawaiian sugar cane regions. The single most important factor adversely influencing the preemergence activity of diuron was the lapse of time between harvest and application, a factor within the control of the plantation personnel.

Type
Research Article
Information
Weeds , Volume 15 , Issue 4 , October 1967 , pp. 317 - 322
Copyright
Copyright © 1967 Weed Science Society of America 

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References

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