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Water Lettuce: Nature, Problem, and Control

Lyle W. Weldon and Robert D. Blackburn
Weeds
Vol. 15, No. 1 (Jan., 1967), pp. 5-9
DOI: 10.2307/4041054
Stable URL: http://www.jstor.org/stable/4041054
Page Count: 5
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Water Lettuce: Nature, Problem, and Control
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Abstract

Water lettuce (Pistia stratiotes L.) was susceptible to applications of 6,7-dihydrodipyrido(1,2-a:2′,1′-c)pyrazidiinium salt (diquat). The most satisfactory rates of application were 1.0 to 1.5 lb/A of diquat. The addition of a surfactant did not increase the effectiveness of diquat. Several other chemicals gave unsatisfactory control of water lettuce.

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