Potentiality of Bat Guano as Organic Manure for Improvement of Growth and Photosynthetic Response in Crop Plants
2021
Palita, Sharat Kumar | Panigrahi, Roopali | Panda, Debabrata
Potentiality of guano of Black-bearded Tomb bat (Taphozous melanopogon) on the growth and physiological response in two crops, i.e., finger millet (Eleusine coracana) and black gram (Vigna mungo) was assessed in the pot experiments. Plants are grown in different treatments prepared by mixing garden soil with fresh and deposited bat guano, farmyard manure and chemical fertilizer. Addition of fresh and deposited guano in garden soil improves the soil pH, EC, OC, N, P and K. The growth parameters of finger millet and black gram seedlings were significantly (p < 0.05) higher in garden soil amended with fresh and deposited guano compared to other treatments. The leaf photosynthetic rate (PN), transpiration rate (E), stomatal conductance (gₛ), water use efficiency and carboxylation efficiency were significantly higher (p < 0.05) in both the crops grown on fresh and deposited guano treatments. In addition, minimum fluorescence (Fo) and maximum fluorescence (Fm) were significantly higher in both millet and black gram seedlings grown on fresh and deposited guano treatments but the maximum photochemical efficiency of PSII (Fv/Fm) was not significantly (p < 0.05) different among the treatments. Based on the results, fresh and deposited guano in soil amendments has a promoting effect on growth biomass and photosynthesis of both the crops. Taken together, the present study suggests that guano of microchiropteran bat Taphozous melanopogon can be used as a substitute of organic manure for better plant growth and crop productivity.
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