Agriculture

Effects of biochar and biofertilizer on cadmium-contaminated cotton growth and the antioxidative defense system

Y. Zhu, H. Wang, et al.

Discover how biochar and biofertilizer significantly boosted cotton growth while reducing cadmium accumulation, ensuring healthier plants in contaminated environments. This groundbreaking research was conducted by Yongqi Zhu, Haijiang Wang, Xin Lv, Yutong Zhang, and Weiju Wang from the College of Agriculture, Shihezi University.

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Abstract

This study investigated the effects of biochar (3%) and biofertilizer (1.5%) on cadmium (Cd)-contaminated cotton (*Gossypium hirsutum* L.) growth. Results showed that Cd negatively impacted chlorophyll, photosynthesis, and dry weight. However, biochar and biofertilizer significantly increased cotton dry weight (by 16.82% and 32.62%, respectively) and decreased Cd accumulation in cotton organs, particularly in bolls. Both amendments improved chlorophyll content, photosynthesis, stomatal conductance, transpiration rate, and intercellular CO2 concentration. Furthermore, they enhanced the activities of antioxidant enzymes (SOD and CAT) in leaves and roots, reducing MDA content and electrolyte leakage. Redundancy analysis confirmed the positive effects of biochar and biofertilizer on cotton growth by reducing Cd-induced oxidative stress.

Publisher

Scientific Reports

Published On

Nov 18, 2020

Authors

Yongqi Zhu, Haijiang Wang, Xin Lv, Yutong Zhang, Weiju Wang

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