Effect of applied selenate on ryegrass and on larvae of solider fly,Inopus rubricepsMacquart

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Abstract
Selenate was applied at 11 rates increasing logarithmically from 1 to 105 g Se/ha to the surface of soil in pots containing ryegrass plants and soldier fly larvae. After 11 weeks the ryegrass plants had absorbed selenate to a maximum concentration of 2500 μg/g, and growth was diminished at 104 g Se/ha. Mortality of soldier fly larvae also increased above this rate from selenium poisoning and/or starvation. The concentration of selenium in larvae was intermediate between ryegrass roots and shoots to a maximum of 200 μg/g.