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Effects of preceding scented rice varieties in combination with organic inputs on soil microbial properties in scented rice (Oryza sativa)-Lathyrus (Lathyrus sativus L.) relay cropping under organic system

A field experiment was conducted during Kharif and Rabi seasons 2016-17 to evaluate the effects of preceding scented rice varieties and carry-over nutrients on soil microbial properties (microbial biomass carbon, microbial population and dehydrogenase activity) in scented rice-lathyrus relay cropping under organic system. The nine treatments included three scented rice varieties and five organic inputs and one control which were laid out in factorial RBD with 3 replications. Among the three preceding scented rice varieties, the highest microbial biomass carbon (912.91µg TPF/g/day) and dehydrogenase activity (58.11μg TPF/g/day) was found in CR-Dhan-909 and the highest microbial population was found in kola joha [soil bacteria (37.81log cfu/g) and fungi (4.32log cfu/g)]. In case of carry-over nutrients, enriched compost recorded highest microbial biomass carbon (935.24µg TPF/g/day), dehydrogenase activity (60.96μg TPF/g/day), soil bacteria (4.3log cfu/g) and fungi (4.54log cfu/g). | Effects of preceding scented rice varieties in combination with organic inputs on soil microbial properties in scented rice (Oryza sativa)-Lathyrus (Lathyrus sativus L.) relay cropping under organic system