The use of fenugreek, spinach, coriander and mint extracts may help in
controlling the infection of phyto-pathogenic microorganisms (Aspergillus niger and
Pseudomonas aeruginosa) and reduce the use of fungicides. However, before use of
allelochemicals as natural fungicides, laboratory and field studies are needed to study their
allelochmeicals interactions with various biological and physicochemical properties of
soil, movement of allelochemicals, mode of action, selectivity etc and the impact of use of
allelochemicals from agronomic and environmental point of view.