Soil nematode community and crop productivity in response to 5-year biochar and manure addition to yellow cinnamon soil

Abstract

Background: Manure and biochar soil amendments have shown many benefits to soil quality and crop productivity. This study aimed to reveal the effects of biochar and manure applications on soil fertility improvement and crop productivity in yellow cinnamon soil. Results: This study based on a 5-year field experiment. Four treatments were designed, included the control (CK), biochar amendment, manure amendment, and both biochar and manure amendment (BM). The results showed that: after five years, both biochar and manure treatment improved soil structure by increasing soil mean weight diameter (MWD), and soil water and nutrient supply was also increased by increasing the contents of water content, available potassium and available phosphorus. The productivity was also enhanced as wheat yield under the biochar, manure, and BM treatments increased by 3.59-11.32% compared with CK. In addition, biochar and manure treatment increased soil microbial biomass carbon (MBC) by > 15%, and soil total nematode abundance was significantly increased. Furthermore, the nematode community structure was significantly affected by biochar and manure treatment, dominant trophic group in CK was herbivores, but bacterivores were dominant in the biochar and manure treatments. The distribution of nematode genera was closely related to soil chemical properties and microbial biomass. Increases in the Shannon's diversity index, and decreases in the dominance index and summed maturity index after the 5-year treatment indicated a sustainable soil ecosystem after the biochar and manure applications. Conclusions: These findings indicate that biochar and manure result in better soil quality and increased productivity in yellow cinnamon soil.

Association of biochar properties with changes in soil bacterial, fungal and fauna communities and nutrient cycling processes

“…Biochar can change soil fauna communities and contribute greatly to soil nutrient cycling. For instance, biochar significantly increased the abundance of soil total nematodes and affected nematode community structure, with bacterivores dominant in the biochar treatments based on a 5-year field experiment (Liu et al 2020b). The altered nematode community by biochar contributed to the improvement of soil quality and the enhancement of productivity in yellow cinnamon soil (Liu et al 2020b).…”

“…For instance, biochar significantly increased the abundance of soil total nematodes and affected nematode community structure, with bacterivores dominant in the biochar treatments based on a 5-year field experiment (Liu et al 2020b). The altered nematode community by biochar contributed to the improvement of soil quality and the enhancement of productivity in yellow cinnamon soil (Liu et al 2020b). A farm case study indicated that straw biochar increased protist population, but had no effect on earthworms (Hansen et al 2017).…”

Using Nematode Community to Evaluate Banana Soil Food Web in Mekargalih, Cianjur, West Java

“…Manure application increases the abundance and richness of soil nematodes (X. Liu et al, 2020). Manure increased the abundance of nematodes in Agr1 by 36.46% compared to Agr2 and 28.67% against Agr3.…”

Rice Straw and Peanut Residues Biochars as Eco-Friendly Approaches for Controlling Root-Knot Nematode, Meloidogyne incognita Infecting Eggplant

“…Furthermore, it can enhance water holding capacity, pore size, aeration, and microbial activities. Biochar application improves organic matter contents in the soils and this leads to noteworthy promotion and accumulation in soil microbes, which may cause antagonistic influences on parasitic nematodes (Onkendi et al, 2014;Graber et al,2014;Bonanomi et al, 2015;Huang et al, 2015;George et al 2016;Frenkel et al 2017;Cao et al 2018;Arshad et al 2020;Liu et al, 2020). Many studies have been conducted to determine the influence of biochar as an amendment to improve soil properties and crops production but limited investigations have studied its effect on plant-parasitic nematodes Arshad et al 2020;Eche and Okafor 2020).…”