A field experiment was conducted in 2007-2008 winter season to study the effect of humic
(HA) and amino acids (AA) and their interactions on growth, chemical composition, chlorophyll content
and chocolate spot and rust diseases of faba bean plants. All morphological (plant height, no of branches
and leaves plant-1 ) and yield components (no of pods/plant and weight of 100 seed) as well as
macronutrients content (N, P, K in seeds and straw) and chlorophyll content significantly increased by
the application of HA (2000 ppm) interacted with AA (2000 ppm). On the other hand, number of seeds
pod-1 did not significant effected. The maximum reduction of disease severity of chocolate spot at 55 days
from planting was recorded with the interaction between HA at1000 ppm + AA at 1000 ppm then HA
at 1000 ppm, while, at 75 days the maximum reduction in both disease severity and disease incidence
occurred by AA at 3000 ppm followed by the treatment of HA at 1000 ppm. HA at 3000 ppm followed
by the interaction between HA 1000 and AA 1000 ppm then the treatment with HA 2000 ppm were the
most effective in reducing rust disease severity of faba bean plant. The study under these application
recommended using HA and AA as foliar application to improve growth and mineral content as well as
decreasing the damage of chocolate spot and rust diseases of faba bean, in addition the advantages as
environmental safety and coast effective.