Most Plant Nutrient Elements Are Retained by Biochar in Soil
| Autor: | Tanawan Limwikran, Anchalee Suddhiprakarn, N. Prakongkep, Irb Kheoruenromne, Robert Gilkes |
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| Rok vydání: | 2019 |
| Předmět: |
dissolution
Soil Science 010501 environmental sciences engineering.material 01 natural sciences lcsh:Chemistry chemistry.chemical_compound Nutrient Biochar biochar microporosity lcsh:Physical geography 0105 earth and related environmental sciences Earth-Surface Processes Laboratory methods plant nutrients 04 agricultural and veterinary sciences Standard methods Phosphate Water soluble lcsh:QD1-999 Agronomy chemistry 040103 agronomy & agriculture engineering 0401 agriculture forestry and fisheries Fertilizer lcsh:GB3-5030 |
| Zdroj: | Soil Systems, Vol 3, Iss 4, p 75 (2019) Soil Systems Volume 3 Issue 4 |
| ISSN: | 2571-8789 |
| DOI: | 10.3390/soilsystems3040075 |
| Popis: | Biochar may contain substantial amounts of plant nutrient elements, and at typical rates of application, may supply luxury levels of K, Ca, P, and other plant nutrients. However, little is known of the agronomic effectiveness of these nutrients because they exist in diverse compounds and are located in the microporous matrix of biochar particles. We have identified the compounds and location of nutrient elements in three biochars and observed their release from biochar particles in soil. Much K was quickly released from biochar but little or no Ca, Mg, S, and P were released over eight months, which represents a very different behavior from chemical fertilizers that are mostly water soluble. There is clearly a need to determine the availability to plant nutrients in biochar. Appropriate laboratory methods should be developed for measuring the availability of plant nutrients as standard methods of fertilizer analysis are ineffective. |
| Databáze: | OpenAIRE |
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