4.2. The potential mechanism of maize yield response to tillage
practices In this study, we hypothesized that tillage would affect maize yield through three pathways: (H1) the condition of soil nutrients (indicated by soil C/N); (H2) the potential of soil water retention (indicated by soil moisture); and (H3) the condition of soil temperature (Fig. 2). Any difference in these conditions could explain the variation in maize growth and ultimately, grain yield.