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Enhanced growth of ginger plants by an eco‐ friendly nitrogen‐fixing Pseudomonas protegens inoculant in glasshouse fields
Author(s) -
Bian Zhilong,
Wang Mei,
Yang Yan,
Wu Yuxia,
Ni Haiping,
Yu Xu,
Shi Jing,
Chen Hanna,
Bian Xiaoying,
Pan Deng,
Li Tao,
Zhang Youming,
Yu Lei,
Jiang Lihua,
Tu Qiang
Publication year - 2022
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.11645
Subject(s) - microbial inoculant , agronomy , biology , rhizosphere , rhizobacteria , rhizome , biofertilizer , inoculation , population , horticulture , botany , bacteria , genetics , demography , sociology
BACKGROUND Excessive nitrogen (N) fertilization in glasshouse fields greatly increases N loss and fossil‐fuel energy consumption resulting in serious environmental risks. Microbial inoculants are strongly emerging as potential alternatives to agrochemicals and offer an eco‐friendly fertilization strategy to reduce our dependence on synthetic chemical fertilizers. Effects of a N‐fixing strain Pseudomonas protegens CHA0‐Δ retS ‐ nif on ginger plant growth, yield, and nutrient uptake, and on earthworm biomass and the microbial community were investigated in glasshouse fields in Shandong Province, northern China. RESULTS Application of CHA0‐Δ retS ‐ nif could promote ginger plant development, and significantly increased rhizome yields, by 12.93% and 7.09%, respectively, when compared to uninoculated plants and plants treated with the wild‐type bacterial strain. Inoculation of CHA0‐Δ retS ‐ nif had little impact on plant phosphorus (P) acquisition, whereas it was associated with enhanced N and potassium (K) acquisition by ginger plants. Moreover, inoculation of CHA0‐Δ retS ‐ nif had positive effects on the bacteria population size and the number of earthworms in the rhizosphere. Similar enhanced performances were also found in CHA0‐Δ retS ‐ nif ‐inoculated ginger plants even when the N‐fertilizer application rate was reduced by 15%. A chemical N input of 573.8 kg ha −1 with a ginger rhizome yield of 1.31 × 10 5 kg ha −1 was feasible. CONCLUSIONS The combined application of CHA0‐Δ retS ‐ nif and a reduced level of N‐fertilizers can be employed in glasshouse ginger production for the purpose of achieving high yields while at the same time reducing the inorganic‐N pollution from traditional farming practices. © 2021 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.