EFFECT OF NICKEL NITRATE SPRAYING ON GROWTH AND SOME TRACE ELEMENTS LEVELS OF TOMATO PLANT Lycopersicon esculantum Mill.

Abstract

The present work was conducted to study the effect of different concentrations of nickel nitrate(0-50 mg/L) on the growth and content of some trace elements (Cu,Zn,Fe,Mn,Co,Cd) of tomato plant. Results showed that treating tomato plants with (10mg/L) gave a significant increase in plant height and chlorophyll concentration, as well as the content of (Cu,Zn,Fe,Mn,Co,Cd),while the plants which treated with nickel nitrate(25mg/L) caused a significant reduce of plant height and chlorophyll concentration and some trace elements content. The plants which treated with(50mg/L) of nickel nitrate was highly toxic and caused the death of plants.