The Impact of Biochar on Crop Lodging and Yield: A Meta-Analysis

A meta-analysis found that biochar improves crop yield and lodging resistance, especially when produced at high pyrolysis temperatures. Straw and wood-based biochar increased plant biomass and strengthened cell walls, while soils rich in organic matter further enhanced crop productivity and structural resilience.

August 27, 2024

1–2 minutes

Ghorbani & Amirahmadi (2024) BiocharBiochar is a carbon-rich material created from biomass decomposition in low-oxygen conditions. It has important applications in environmental remediation, soil improvement, agriculture, carbon sequestration, energy storage, and sustainable materials, promoting efficiency and reducing waste in various contexts while addressing climate change challenges. More and soil contributions to crop lodging and yield performance – A meta-analysis. *Plant Physiology and Biochemistry*. https://doi.org/10.1016/j.plaphy.2024.109053

A recent study, published in Plant Physiology and Biochemistry, examines the relationship between biochar application and soil conditions in influencing crop lodging resistance and yield. Conducted by Ghorbani and Amirahmadi, this meta-analysis analyzed 33 studies to evaluate the effects of biochar on crop productivity and lodging resilience in cereals.

Key findings indicate that biochar, particularly from straw and wood feedstockFeedstock refers to the raw organic material used to produce biochar. This can include a wide range of materials, such as wood chips, agricultural residues, and animal manure. More, plays a significant role in improving both plant yield and structural integrity. Biochar produced at higher pyrolysisPyrolysis is a thermochemical process that converts waste biomass into bio-char, bio-oil, and pyro-gas. It offers significant advantages in waste valorization, turning low-value materials into economically valuable resources. Its versatility allows for tailored products based on operational conditions, presenting itself as a cost-effective and efficient More temperatures (>550°C) was found to increase grain yield by 32.7%. Furthermore, soils rich in organic matter and fine-textured soils were shown to enhance plant biomassBiomass is a complex biological organic or non-organic solid product derived from living or recently living organism and available naturally. Various types of wastes such as animal manure, waste paper, sludge and many industrial wastes are also treated as biomass because like natural biomass these More and strengthen cell walls, improving lodging resistance. Biochar application, especially at higher rates, significantly increased cellulose and lignin content in crops, further contributing to structural resilience.

The study highlights that the positive effects of biochar are contingent on several factors, including soil pHpH is a measure of how acidic or alkaline a substance is. A pH of 7 is neutral, while lower pH values indicate acidity and higher values indicate alkalinity. Biochars are normally alkaline and can influence soil pH, often increasing it, which can be beneficial More, available nitrogen and phosphorus, and biochar’s physical properties. Soils with more than 20g/kg of organic matter demonstrated significant gains in crop yield and plant height.

Overall, the findings underscore the potential of biochar to enhance crop productivity and lodging resistance through improvements in soil quality and plant structure. This meta-analysis offers valuable insights for optimizing biochar use in agriculture to address issues related to crop lodging and resource efficiency.