Seasonal variation of dust deposition on plant leaves and its impact on various photochemical yields of plants

•Dust interferes in photosynthetic yield of plant species.•Effects of dust on plants leaves can be assessed using chlorophyll fluorometer.•Chlorophyll fluorometer measures dust stress of leaves quickly.•Dust deposition and photosynthetic yield shows seasonal pattern. The aim of the present study was to assess the impacts of dust on leaf photosynthetic parameters with the help of MINI‐PAM, Chlorophyll Fluorometer, Heinz Walz GmbH, Germany. Coal fired thermal power plants generates a considerable amount of dust (fly ash) responsible for particulate pollution. The dust was intercepted by plant leaves that helped in reducing the dust load of the environment. The dust holding capacity of leaves was depending on various morphological features, and therefore, different plants have different dust holding capacity. The dust deposited on leaves showed seasonal variations among different species. The dust interfered in normal photosynthetic processes of leaves because of stomatal closures and its constituents. So, it can be said that dust has adverse effects on various photosynthetic parameters of plant species.