Catch crop diversity increases rhizosphere carbon input and soil microbial biomass

Abstract

Catch crops increase plant species richness in crop rotations, but are most often grown as pure stands. Here, we investigate...

Results

Plant biomass and net ecosystem exchange

The NEE decreased significantly with increasing catch crop diversity (Fig. 1), suggesting increasing -C uptake from the atmosphere.

Figure 1

 

Discussion

NEE is linked to plant diversity

... The NEE in our study showed a remarkably strong negative gradient from mustard to mix 4 to mix 12 (Fig. 1), which suggested higher photosynthetic -C fixation rates with increasing catch crop diversity.