Effects of novel bioorganic fertilizer application on soil enzymes and bacterial community in multi-site rice paddies in China

Abstract

Application of a novel bioorganic fertilizer (BIO) has been effectively used to inhibit weeds in rice paddies. To identify changes in soil bacterial community and enzymes in response to BIO treatments, field experiments were carried out in five major rice-growing areas in China. The dominant phylogenetic groups recorded included Proteobacteria, Actinobacteria, Bacteroidetes, Firmicutes and Acidobacteria. Anaeromyxobacter, Bacteroides, Bifidobacterium, Escherichia- Shigella, Geobacter and Haliangium were significantly different between BIO-treatment and untreated control and aided in general function (R), amino acid transport, metabolism (E) and transcription (K) clusters. The soil chemical properties and enzyme activities were less affected by BIO at these study sites. RDA analysis showed that soil bacterial community had a significant positive correlations among northern latitude, eastern longitude, exchangeable K, total K, total P, soil pH, and total N, except for organic matter, hydrolytic N and extractable P. Overall, our work showed that application of BIO does not alter the main community structure and functional diversity of soil bacteria in rice paddies and should be encouraged for use as a sustainable weed management strategy.

Organic amendments alleviate early defoliation and increase fruit yield by altering assembly patterns and of microbial communities and enzymatic activities in sandy pear (Pyrus pyrifolia)

“…It has been widely used in apple (Wang et al 2016 ), banana (Shen et al 2019 ), pepper (Yu et al 2019 ), and kiwi (Liu et al 2020c ) orchards to improve soil biological fertility, and restructure soil microflora. Soil microbes have an enormous impact on soil fertility, ecosystem sustainability, as well as plant health and growth (Gu et al 2019 ; Li et al 2021 ; Ma et al 2018 ; Zhang et al 2021 ). However, there is a lack of information on how BIO and HA affect the early defoliation rate, the soil microbial activities and community composition, and their relationships of sandy pear orchards in the red soil regions of southern China.…”

Effect of long-term application of bioorganic fertilizer on the soil property and bacteria in rice paddy

“…The organic substrates in the BIO were composed of kitchen garbage, maize straw, wood- destroying fungal dregs, rice straw, tobacco straw, plant ash, and chicken and sheep manure. The physical and chemical properties of the compost material measured were provided in our previous study (Li et al 2018 , 2021 ). The combined process of ZF-5.5 mechanical fertilizer preparation and pile fermentation was used to produce composting manure at a temperature range of 40-80 °C for 15 days.…”

“…The novel BIO was found to be effective in controlling grass and broad-leaved weeds in three rice fields (Huanan, Hainan, and Heilongjang, in China) for two years (2014 and 2015) with an average weed suppression rate of more than 80% (Li et al 2018 ). The application of BIO did not disturb the main community structure and functions of soil bacteria in multi-site field experiments (Li et al 2021 ). However, the BIO effects on soil bacteria in rice paddy in the long-term are not well-known.…”