Young summer leaves of uniform size on a single tree were tagged and then picked at intervals as they matured. Prior to the time of maximum leaf expansion, the relation between Fe and chlorophyll concentrations changed rapidly in the direction of increased chlorophyll per unit of Fe. Samples from three orchards taken in September revealed a correlation coefficient of .70 between Fe and chloroph...

The Mediterranean fruit fly, Ceratitis capitata (Wiedemann), is one of the most important quarantine pests in the world. Host commodities shipped from infested parts of the world to non-infested parts that might be susceptible to infestation should undergo a phytosanitary measure to render negligible the risk of shipping viable flies. Ionizing irradiation is a promising phytosanitary treatment ...

relationship exists and that, concomitantly, NO may be employed as a post-harvest senescence retarding agent Employing non-invasive photoacoustic spectrometry, (Leshem and Wills, 1998; Leshem et al., 1998). This emissions of nitric oxide (NO) and ethylene in postcriticism particularly pertains to endogenous plant NO harvest strawberries and avocados were monitored. emissions which, in the above...