Table 3 Relative abundance of ammonia oxidisers and nitrite oxidisers in bare fallow, peanut cropping and soybean cropping treatments. Data represent averages ± SE of four replicates.

Nitrosopumilus (Thaumarchaeota)

0.03 ± 0.02^a

0.00 ± 0.00^a

0.00 ± 0.00^a

Nitrososphaera (Thaumarchaeota)

0.48 ± 0.11^a

0.24 ± 0.07^b

0.14 ± 0.07^b

Nitrosomonadaceae (Proteobacteria)

0.03 ± 0.02^a

0.02 ± 0.01^a

0.06 ± 0.03^a

Sum

0.54 ± 0.15 ^a

0.26 ± 0.08 ^b

0.20 ± 0.10 ^b

Nitrospira (Nitrospirae)

0.28 ± 0.07^a

0.29 ± 0.06^a

0.25 ± 0.06^a

Nitrobacter (Proteobacteria)

0.04 ± 0.02^a

0.01 ± 0.01^a

0.00 ± 0.00^a

Sum

0.32 ± 0.09 ^a

0.30 ± 0.07 ^a

0.25 ± 0.06 ^a