The Iron-chlorophyll Relateonship in Young Hass Avocado Leaves
نویسندگان
چکیده
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 chlorophyll concentrations in spring cycle leaves whereas summer cycle leaves gave a more random distribution. It is concluded that the use of leaf analysis for diagnosing Fe status of Hass avocados provides more useful information when spring cycle leaves are collected in September than when summer cycle leaves are collected in September.
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