Einfluß von Ammonium‐ und Nitratstickstoff, Eisenchelaten und CCC auf den Chlorophyll‐ und Gesamtzukerghalt der Blätter chlorotischer, immergrüner Pflanzen auf alkalischen Böden Isfahans

摘要

Effect of ammonium and nitrate nitrogen, iron chelates and CCC on the chlorophyll and carbohydrat content in leaves of chlorotic, periwinkle plants an alkaline soils in IsfahanIn pot experiments with periwinkle plants on alkaline soils the effect of nitrogen fertilization, iron chelats and cycocel in treating iron chlorosis was studied.High amounts of calcium nitrate produced chlorosis, followed by a general decrease in plant growth, while the same amount of ammonium sulfat prevent chlorosis and increased chlorophyll content and production of dry matter.In chlorotic plants both the chlorophyll and sugar content was increased by spraying with iron chelate, and with cycocel as well.