نهمین کنفرانس ملی و اولین کنفرانس بین المللی فیزیولوژی گیاهی

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کد مقاله 1089

عنوان Evaluation of the Effects of Different Biochar Concentrations on Growth, Germination, Nutrient Uptake, and Potential Toxicity in Wheat (Triticum aestivum L.)

نویسندگان Amin Janinejad - Naser Karimi - Shahryar Sasani

چکیده Biochar, as a biological soil amendment, plays a crucial role in improving the physical, chemical, and biological properties of soil. However, excessive application or high concentrations may lead to toxicity and reduced plant growth. This study was conducted to evaluate the effects of different concentrations of wheat straw biochar on the growth and germination of wheat cultivar ‘Amin’ under greenhouse conditions. The experimental treatments included six biochar levels (0, 1, 3, 5, 7, and 10% w/w soil) arranged in a completely randomized design with three replications. The measured parameters were germination percentage, root and shoot length and dry weight, nutrient uptake (NPK), soil pH and EC, and visible toxicity symptoms. Results indicated that biochar levels of 1–3% significantly enhanced germination percentage (10%), root length (31%), and root dry weight (49%), whereas higher concentrations (7 and 10%) increased soil salinity and altered pH, thereby restricting plant growth and causing chlorosis and reduced dry biomass. Accordingly, the optimal application of biochar is recommended within the range of 1–3%, while higher concentrations require more detailed evaluation of soil properties and biochar origin.

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