“…In the growth stage studies,ryegrass,white
clover and yellow-flowered lucerne were cut once 30,60 or 90 days after sowing or three times at intervals of 30 days.In the one-cut system, at 90 d,the activity concentration of 134 Cs in ryegrass and
clover was higher and that in lucerne lower than in the three-cut system.In both treatments,the activity concentration in ryegrass decreased and that in legumes,generally,tended to increase with time.In the N fertilization studies,ryegrass was grown at different levels of ammonium nitrate (100,200 and 400 mg N l -1 )and biotite (0,10,20 and 40 g l -1 ) application.The addition of N to soil increased and that of biotite decreased the 134 Cs activity con- centration in ryegrass. …”
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