Title |
Potato tillage method is associated with soil microbial communities, soil chemical properties, and potato yield |
Author |
Haiyan Ma1, Chen Xie1, Shunlin Zheng1,2*, Peihua Li3, Hafsa Nazir Cheema1, Jing Gong1, Zhuqing Xiang1, Juanjuan Liu1, and Jiahao Qin1 |
Address |
1Key Laboratory of Crop Physiology, Ecology and Cultivation in Southwest China, Ministry of Agriculture, Sichuan Agricultural University, Chengdu 611130, P. R. China, 2Key Laboratory of Potato Crop Genetics and Breeding, Ministry of Agriculture, Chengdu Joyson Agricultural Technology Co., Ltd, Xingu 610500, P. R. China, 3College of Agricultural Sciences, Xichang University, Xichang 615000, P. R. China |
Bibliography |
Journal of Microbiology, 60(2),156-166, 2022,
|
DOI |
10.1007/s12275-022-1060-0
|
Key Words |
potato-maize rotation, potato continuous cropping,
intensive potato continuous cropping, soil chemical
properties, soil microbial community structure |
Abstract |
Intensive potato continuous cropping (IPCC) results in low
potato yields compared with non-intensive potato continuous
cropping (PCC) and potato-maize rotation (PMRC). However,
it is still unclear whether the degree of potato continuous cropping
obstacle is related to the soil environment formed by the
previous crop. To investigate the effect of planting potatoes
and planting maize after harvesting the spring potatoes on
soil chemical properties and soil microbial community structure,
an experiment was carried out in the same origin soil
environment over a period of seven years: (a) PCC, i.e., spring
planting; (b) IPCC, i.e., autumn and spring planting (IPCC);
(c) PMRC, i.e., spring potatoes and summer maize (PMRC),
and (d) fallow (CK). We confirmed that the potato yield under
PMRC was significantly higher than that under PCC and
IPCC. Under IPCC, soil total phosphorus content was significantly
higher than other treatments, whereas ammonium
nitrogen content was the lowest. Compared with PCC and
IPCC, PMRC had a higher ammonium nitrogen content and
lower total phosphorus content. The significantly different
fungal taxa in IPCC (Glomerellales, Plectosphaerella, Thelebolales)
may threaten the health of the plant and positive correlated
with soil total phosphorus, while other microbial taxa
in PMRC (Bacillales, Polythrincium, Helotiales) can mainly
promotes plant nitrogen uptake and protects plants against
diseases. The PMRC-promoting taxa were positively correlated
with the ammonium nitrogen content and negative correlated
with soil total phosphorus content. In summary, the
cropping systems might have affected potato yields by changed
soil microorganism community structures – especially fungal
community structures – and by the chemical properties of the
soils that also depends on microbes. |