Soil properties
Soil carbon was significantly greater in SARS and LARS as compared to BS, whereas there was no significant increase with the fallow period (Fig 8 b). Soil carbon in the rhizosphere of rice was greater than in the rhizosphere of maize, with arahar having intermediate values (Fig 8 a). Soils from the 8-year fallow were least acidic, and arahar had less acidic rhizosphere soils than maize with rice intermediate. All rhizosphere soils were less acidic than the BS (Fig 8 c-e).