39 アルカリ土壌における作物の生長促進と養分吸収に及ぼす 5-ALA の効果

概要

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Alkaline soil(pH8.5), was prepared by an addition of natural calcium carbonate(Kaikaseki). When spinach or Komatsuna was grown in the alkaline soil, the growth and fresh yield decreased remarkably as compared with those in natural soil(control). However, this decreasing growth rate in alkaline soil was retard by the folial application of 5-aminolevulinic acid (5-ALA) solution (30ppm) alone. No the retardant effect was found in the combination of 5-ALA (30ppm) and chelating iron(55ppm). In the case of spinach, the content of nitrate per total nitrogen decreased in leaf tissues treated with 5-ALA solution alone. From these results obtained here, we would like to discuss about the plant growth regulating-activities of 5-ALA alone and of the combination of 5-ALA and chelating iron.
植物化学調節学会の論文
2002-10-31