Bronzing is associated with Fe levels greater than 300 ppm in the leaf blade of

Bronzing is associated with Fe levels greater than 300 ppm in the leaf blade of Rice at tillering. Iron toxicity is a syndrome disorder associated with a large concentration of reduced iron in the soil solution.
Bronzing is restricted to the upper leaf surface and appears as reddish-brown flecking that may uniformly cover the entire leaf surface or parts of it. Affected leaves eventually turn yellow and drop.