Effects of biochar amendment on wheat production, mycorrhizal status, soil microbial community, and properties of an Andisol in Southern Chile

Microgranular biochar improves soil fertility and mycorrhization in crop systems

“…Notably, the increase was detectable even after the rapid crop growth and nutrient uptake phase, indicating that the reservoir of nutrients enhanced by the biochar materials was not exhausted by the demands of plant growth. These findings are in agreement with earlier empirical observations (El-Naggar et al, 2015; Kamran et al, 2018;Karimi et al, 2020) and are driven by the nutrient contents of amended biochars, which are typically higher than those of the soils (Table 1; Chintala et al, 2014;Curaqueo et al, 2021). Furthermore, our results underscore the sustained efficacy of biochar-based amendments, particularly in their microgranule form.…”

“…While it did not lead to a significant increase in biomass production, its addition enhanced the nutritional status of the crops. Numerous studies have highlighted the capacity of biochar to improve crop growth (Curaqueo et al., 2021; Gonzaga et al., 2021; Sun et al., 2021). This improvement can be attributed to the alteration of soil physicochemical properties, including a reduction in bulk density (Liang et al., 2019), increased water retention (Lebrun et al., 2022) and nutrient availability (Curaqueo et al., 2021; Khan et al., 2020).…”

“…Firstly, by elevating nutrient availability, biochar not only expands the nutrient reservoir accessible to plants but also enriches the nutrient pool available to other macro‐ and microorganisms residing in the soil (de Figueiredo et al., 2019). Secondly, the porous structure of biochar serves as a conducive habitat and sanctuary for the fungal hyphae, promoting their growth and development (Curaqueo et al., 2021). Lastly, previous studies have demonstrated biochar's ability to reduce bulk density and enhance soil aeration, which is highly beneficial to microorganisms (dos Santos Trentin et al., 2022).…”

“…Numerous studies have highlighted the capacity of biochar to improve crop growth (Curaqueo et al, 2021;Gonzaga et al, 2021;Sun et al, 2021). This improvement can be attributed to the alteration of soil physicochemical properties, including a reduction in bulk density (Liang et al, 2019), increased water retention (Lebrun et al, 2022) and nutrient availability (Curaqueo et al, 2021;Khan et al, 2020). Seyedsadr et al (2022) pointed out that the high porosity, especially the volume of mesopores, and very high Brunauer-Emmett-Teller (BET) surface area result in a substantial ability of biochar to hold and slowly release pore water together with dissolved elements.…”

Influence of mycorrhizal fungi and biochar on nitrogen use efficiency correlated with yield and yield components of wheat

“…Application of 20 Mg ha−1 of OBC and PBC increased AM spore density and root colonization relative to control treatment. In the same way, the BC application significantly affects the AM mycelium density (10). Since the global approach and the use of management methods such as the use of biological fertilizers tend to reduce the use of chemical fertilizers, this study aims to identify the effects of mycorrhiza and biochar on wheat to increase nitrogen uptake efficiency due to the importance of its production as one It became one of the most important sources of human food.…”