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Home → Publications → Tree Planters' Notes → Tree Planters' Notes Issue 31 (1958) → Water Sealing of Vapam for Nursery Fumigation

Water Sealing of Vapam for Nursery Fumigation

During tests of rate of application of Vapam in the LSU School of Forestry nursery in 1955-56 1/, it was noted that although both applications of the Chemical were sealed by 0. 33 inches of water, the autumn treatments were much more effective than the spring treatments at all levels. The most obvious difference in treatments was that a heavy rain had fallen the night following the autumn treatment. Therefore, tests were run in the spring of 1957 to explore the results of varying the amount of water sealer. The tests were run in the LSU School of Forestry nursery, on a silt loam soil. Vapam 2/ was mixed with water and applied to the beds at the rate of two quarts of Vapam in 12 gallons of water per 100 square feet of bed surface. Following application, the chemical was sealed in by varied amounts of water.


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Author(s): Charles B. Briscoe

Publication: Tree Planters' Notes - Issue 31 (1958)