Effects of Biochar on Soil Properties and Tomato Growth

Author:

Calcan Suzana Ioana,Pârvulescu Oana Cristina,Ion Violeta Alexandra,Răducanu Cristian Eugen,Bădulescu LilianaORCID,Madjar RoxanaORCID,Dobre Tănase,Egri Diana,Moț Andrei,Iliescu Lavinia Mihaela,Jerca Ionuț Ovidiu

Abstract

The paper aimed at evaluating the effects of biochar (BC) produced by slow pyrolysis of vine pruning residue on soil physicochemical properties and tomato plant growth. A greenhouse experiment was conducted for 66 days, applying different treatments for 3 soil types, i.e., foliar fertilizer, BC (at a volumetric ratio between BC and soil of 20/80), BC + foliar fertilizer, and no treatments. Strongly alkaline BC (pH = 9.89 ± 0.01) had a significant beneficial effect on the growth performance of tomato plants sown in a strongly acidic soil (pH = 5.40 ± 0.02). The mean values of height, number of leaves, and collar diameter of plants grown in BC-amended soil without foliar treatment were up to 50% higher than those of plants grown in soil with the other treatments. This positive effect of BC on plant growth is due to the changes in the soil properties. The addition of BC led to increased values of electrical conductivity, pH, soluble and available nutrient concentration. Moreover, BC reduced soil bulk density by about 50%, resulting in improved plant root development and thus enhanced water and nutrient uptake. Accordingly, BC derived from vine pruning residues can improve soil quality and tomato plant growth, as well as reduce biomass residues.

Funder

Ministry of Education

Publisher

MDPI AG

Subject

Agronomy and Crop Science

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