IRRIGATION/LEACHING EXPERIMENT- BIKINI ISLAND (CONTINUED~ PHASE I 3 to 5 percent of inventory was moved to the groundwater. Approximately results for the 2.5 acres cleared of vegetation Preliminary uptake of 137CS, by plants grown subsequent show a reduced to irrigation. Results from February and May 1985 collections.. - 137Cs Ratio, Control Site/IrritgiitiOnSite Plant Species pCi/g Wet Weight Control/pCig 256 Grass Glory 26 Messerschmidia 20 Corn 27 Morning Interpretation Duration? - Exchangeable Time dependent; Pool of 137CS. one year evaluation the uptake in various plants in the irrigation processing Wet Weight Irrigation so far. We will need to evaluate plot (i.e., collect samples for and analysis) over the next 2-3 years. The duration of the effect will dictate the usefulness cleanup-option and the need for N, P, K application subsequent to irrigation. Additional field and laboratory experiments of the observed effect and for predicting next 3 years. 28 of this method as a as the continuing treatment are required to establish the basis the possible duration beyond the