THE EFFECTS OF RADIATION IN PLANT NUTRITION EXPERIMENTS WITH RADIOPHOSPHORUS
In all tracer experiments with living plants using radioactive isotopes, it is essential for the validity of the experiments that the processes to be studied are not affected by the radiation. Results are reported from experiments on uptake of phosphorus in cereals from P/sup 32/labelled phosphates of different specific activities. The plants are examined for the radiation effects of importance in the study of fertilizer problems. The plants were grown in pots with sandy soil in a glasshouse. The labeled phosphate and the nutrient solutions supplied were thoroughly mixed into the soil. Two fertilizer levels of phosphate were used equivalent to about 40 and 80 lbs P/sub 2/O/sub 5/ per acre. The plants were mostly oats, but also some pots with barley were used. Twenty different dose levels were applied, ranging from zero to 200 mc/g P for oats and from zero to 100 mc/g P for barley. At the highest doses the plants displayed severe injuries. Data are tabulated on dry weight, ash, and total and fertilizer derived phosphorus. Straw and grnin were analyzed separately. Visual symptoms of radiation damage are described and discussed in the light of earlier data on P/ sup 32/ radiation effects in plants. (C.H.)
- Research Organization:
- Agricultural Coll. of Norway, Vollebekk
- NSA Number:
- NSA-13-006127
- OSTI ID:
- 4289262
- Report Number(s):
- A/CONF.15/P/562
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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