Root Activity Studies of Cashew Plants (Anacardium Occidentale L.) Using exp 32 P Radioisotope

摘要

In this preliminary study, we are looking at levels exp 32 P and depths of soil injections on uptake by plants using the injection techniques in root activity studies. exp 32 P activities can be detected in the leaves and flower parts of plants two weeks after injection in the soil. Reasonable count rate can be obtained by using lower level of exp 32 P (1.6 mCi/tree) than recommended (5 mCi/tree). exp 32 P counts were higher in younger than older leaves. Flowers had the least count. Differences in injection depths (5 and 15 cm) could not be detected. Differences in count rate were detected due to position of leaves and flowers (upper and lower canopy) in some of the sampling intervals. (Atomindex citation 14:767906)