Soil biological properties under different tree based traditional agroforestry systems in a semi-arid region of Rajasthan,India |
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| Authors: | R S Yadav B L Yadav B R Chhipa S K Dhyani Munna Ram |
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| Institution: | (1) National Research Centre for Agroforestry, Near Pahuj Dam, Gwalior Road, Jhansi, 284 003, Uttar Pradesh, India;(2) Department of Soil Science and Agricultural Chemistry, S.K.N. College of Agriculture, Rajasthan Agricultural University, Jobner, Jaipur, 303 329, Rajasthan, India |
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| Abstract: | An investigation was carried out in an Entisol at farmers’ field in Jaipur district, Rajasthan, India during 2002–2004 to evaluate the effect of traditionally grown trees
on soil biological characteristics. Traditionally grown trees in farm lands for study consisted of Prosopis cineraria (L.), Dalbergia sissoo (Roxb.) ex DC, Acacia leucophloea (Roxb.) and Acacia nilotica (L.) Del. having a canopy diameter of 8 m. Results revealed significant and substantial improvement in soil biological activity
in terms of microbial biomass C, N and P, dehydrogenase and alkaline phosphatase activity under different tree based agroforestry
systems as compared to a no tree control (cropping alone). Soil microbial biomass C, N and P under agroforestry varied between
262–320, 32.1–42.4 and 11.6–15.6 μg g−1 soil, respectively, with corresponding microbial biomass C, N and P of 186, 23.2 and 8.4 μg g−1 soil under a no tree control. Fluxes of C, N and P through microbial biomass were also significantly higher in P. cineraria based land use system followed by D. sissoo, A. leucophloea and Acacia nilotica in comparison to a no tree control. Thus, it is concluded that agroforestry system at farmers’ field enhance soil biological
activity and amongst trees, P. cineraria based system brought maximum and significant improvement in soil biological activity. |
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