Oil palm (Elaeis guineensis Jacq.) leaf K and Mg contents differ with progenies: implications and research needs (original) (raw)
Good management practice in oil palm rely on accurate predictions of fertiliser require-ments that respect the environment and are economically optimal. A study performed in Indonesia pointed out that K and Mg leaf contents greatly vary from one oil palm progeny to another for the same production level. Such differences in nutrient contents may lead to an incorrect assessment of the nutrient requirements, questioning the validity of leaf analysis as a diagnostic tool and raise several research questions: Do oil palm progenies with different leaf nutrient contents need to be fertilised with specifics fertilisation tables? Does the difference in leaf nutrient contents between progenies reflect different patterns for nutrient allocation within plant tissues? Do mineral absorption and fertiliser recovery eyciency differ according to oil palm progenies? and to what extend so far? Is there any progeny which can adapt itself to agronomic practices requiring less fertiliser for highest prod...
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