Table 5 Mean microbial biomass N (MBN) and C (MBC) contents, mean MBN and MBC percentages derived from rhizodeposition (dfR) in soil cropped with two pea varieties and triticale as intercrop after a 105-days greenhouse pot experiment; transfer paths: ADR = AMF, diffusion, and root contact between pea and intercrop; AD = AMF and diffusion; A = only AMF; CV = mean coefficient of variation between replicate pots (n = 6); probability values of a two-way ANOVA, using pea variety and transfer path treatment as factors, NS = not significant.
Plants | Transfer paths | MBN | MBC | Inorganic N | Extractable C | ||||
|---|---|---|---|---|---|---|---|---|---|
(µg g−1 soil) | dfR (%) | (µg g−1 soil) | dfR (%) | (µg g−1 soil) | dfR (%) | (µg g−1 soil) | dfR (%) | ||
Frisson + triticale | ADR | 30.7 | 0.44 | 205 | 1.09 | 40 | 0.017 | 104 | 1.01 |
Frisson | AD | 30.2 | 1.94 | 210 | 3.10 | 43 | 0.022 | 104 | 2.76 |
Frisson | A | 28.4 | 1.15 | 196 | 1.80 | 53 | 0.050 | 98 | 1.61 |
Triticale | AD | 31.3 | 0.14 | 210 | 0.08 | 38 | 0.002 | 107 | 0.09 |
Triticale | A | 28.1 | 0.06 | 196 | 0.38 | 34 | 0.000 | 102 | 0.34 |
P2 + triticale | ADR | 28.2 | 0.32 | 187 | 1.33 | 44 | 0.003 | 95 | 1.20 |
P2 | AD | 27.6 | 0.31 | 180 | 0.49 | 48 | 0.010 | 93 | 0.44 |
P2 | A | 27.9 | 0.33 | 186 | 0.50 | 58 | 0.006 | 93 | 0.45 |
Triticale | AD | 30.8 | 0.05 | 204 | 0.02 | 49 | 0.001 | 102 | 0.02 |
Triticale | A | 29.3 | 0.02 | 197 | 0.00 | 36 | 0.000 | 100 | 0.00 |
Probability values | |||||||||
Plant | NS | < 0.01 | < 0.01 | < 0.01 | NS | < 0.01 | < 0.01 | < 0.01 | |
Transfer paths | NS | NS | NS | < 0.01 | NS | NS | NS | < 0.01 | |
Plant × transfer path | NS | < 0.01 | NS | < 0.01 | NS | < 0.01 | NS | < 0.01 | |
CV (± %) | 9.6 | 80 | 7.0 | 96 | 32 | 92 | 6.8 | 89 | |
