Novel-integrated process for production of bio-organic fertilizer via swine manure composting

Abstract

The traditional method of producing bio-organic fertilizer contains two consecutive composting stages which, however, is time-consuming and requires high input of energy and cost. This study attempted to combine two consecutive stages into one single step. Paenibacillus polymyxa, as an antagonistic strain to control anthracnose in Chinese Pakchoi, was used as inoculum to obtain bio-organic fertilizers through two approaches: two consecutive stages (TCS) composting as control and the proposed one step through (OST) composting. The resulting two bio-organic fertilizers produced by TCS and OST were tested for the disease incidence and disease resistant index, and the fertility on growth of Chinese Pakchoi. The results of relative abundance of P. polymyxa showed no significant difference between two kinds of bio-organic fertilizers in phylum, family and genus. The disease incidence of bio-organic fertilizers produced by OST and TCS reduced by 61.40% and 68.42%, respectively, as compared to the control group, where the difference was not significant. The growth promoting effect was remarkable, although the difference in the fertility on the growth was not significant. Compared with the traditional TCS method, the novel OST method could improve efficiency of bio-organic fertilizer production by 42.86% per year according to this study.

Fertilizer reduction with bio-organic fertilizer to regulate the root soil microbial community structure to improve Baby Chinese cabbage yield

“…The production and integration of new bio-organic fertilizers with beneficial microorganisms and mature compost is an important way to increase crop yields and/or strengthen the control of soil-borne diseases (Zheng et al 2020, Chen et al 2021 . It is feasible but difficult to reduce fertilizer application without causing a loss of productivity (Da Costa et al 2013).…”

Influences of Different Ectopic Fermentation Bed Fillers of Human Excreta on the Soil Properties and Growth of Chinese Pakchoi

“…1, there was no signi cant difference in the plant height of pakchoi in each group at the early stage of growth (7 days), indicating that the llers had no effect on the growth of pakchoi at this time. This result may be related to the slow release of organic nutrients (Chen et al 2021b). As time passed, the nutrients in the llers were gradually released, and the pakchoi showed signi cant differences in plant height as it adapted to the different ller application amounts.…”

Dissipation Dynamics of Doxycycline and Gatifloxacin and Accumulation of Heavy Metals during Broiler Manure Aerobic Composting

“…However, their dissipation and persistence still remained unclear, especially the depletion and fate of GAT during the broiler composting process. Most of the studies were based on pig manure composting [ 20 , 21 ], and there was limited understanding of broiler manure composting. This study thus examined the accumulation of six metal elements and the fate and depletion of DOX and GAT during the composting process of broiler manure.…”