TABLE 1.
Physico-chemical and biological properties of the experimental field (initial value).
| SN | Particulars | Values | References | |
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| 2016 | 2017 | |||
| I | Mechanical analysis | |||
| Sand (%) | 63.28 | 63.40 | Bouyoucos, 1962 | |
| Silt (%) | 12.24 | 12.26 | ||
| Clay (%) | 24.48 | 24.34 | ||
| Textural class | Sandy clay loam | |||
| II | Physical Properties | |||
| Bulk density (Mg m–3) | 1.58 | 1.56 | Piper, 1966 | |
| Water stable aggregates (%) | 11.5 | 11.0 | Yoder, 1936; Bouyoucos, 1962 | |
| III | Chemical properties | |||
| Soil organic carbon (%) | 0.39 | 0.40 | Jackson, 1973 | |
| Available N (kg ha–1) | 164.5 | 166.5 | Subbiah and Asija, 1956 | |
| Available P (kg ha–1) | 14.5 | 14.8 | Olsen et al., 1954 | |
| Available K (kg ha–1) | 292.0 | 292.0 | Jackson, 1973 | |
| pH (1:2.5, soil: water) | 7.8 | 7.8 | Jackson, 1973 | |
| Electrical conductivity (EC, dsm–1) | 0.40 | 0.39 | Jackson, 1973 | |
| IV | Biological properties | |||
| Microbial biomass carbon (MBC, mg kg–1 soil) |
102.5 | 112.0 | Nunan et al., 1998 | |
| Dehydrogenase activity (DHA, μg TPF g–1 soil day–1) |
105.5 | 118.0 | Casida et al., 1964 | |
| Alkaline phosphatase activity (APA, μg PNP g–1 soil hr–1) |
46.2 | 50.3 | Tabatabai and Bremner, 1969 | |
| Acetylene reduction activity (ARA, n moles ethylene gram–1 soil hr–1) |
13.5 | 16.8 | Rakshit et al., 2018 | |
| Total polysaccharides (mg kg–1 soil) | 266.5 | 270.8 | Acton et al., 1963 | |