Comparison of biochar effect on chemical and microbiological factors in a pot experiment on lettuce and tomato
| العنوان: | Comparison of biochar effect on chemical and microbiological factors in a pot experiment on lettuce and tomato |
|---|---|
| المؤلفون: | Trupiano D., Cocozza C., Baronti S., Amendola C., Di Lonardo S., Vaccari F.P., Iorizzi M., De Felice V., Oliva F., Tognetti R., Ranalli G., Scippa S. |
| المصدر: | International Biochar Symphosium: biochar contribution to sustainable agricolture, pp. 38–39, 2015 info:cnr-pdr/source/autori:Trupiano D., Cocozza C., Baronti S., Amendola C., Di Lonardo S., Vaccari F.P., Iorizzi M., De Felice V., Oliva F., Tognetti R., Ranalli G., Scippa S./congresso_nome:International Biochar Symphosium: biochar contribution to sustainable agricolture/congresso_luogo:/congresso_data:2015/anno:2015/pagina_da:38/pagina_a:39/intervallo_pagine:38–39 |
| بيانات النشر: | Institut für Agrartechnik Bornim e.V.., Potsdam-Bornim , Germania, 2015. |
| سنة النشر: | 2015 |
| مصطلحات موضوعية: | agronomic improvement, food and beverages, toxicity, black carbon |
| الوصف: | The beneficial effects of biochar, obtained from the carbonization of orchard pruning residues were analyzed on lettuce (Lactuca sativa L.) and tomato (Solanum lycopersicum Mil.) in a pot experiment with four substrates. Lettuce plants were grown in poor soil (PS), poor soil plus biochar (PSB), poor soil plus compost (PSC) and poor soil ((in term of carbon content and nitrogen content) plus compost and biochar (PSCB). Tomato plants were grown in poor soil (PS), poor soil plus biochar (PSB), rich soil (in term of carbon content and nitrogen content) (RS) and rich soil plus biochar (RSB). The effects of different substrates were assessed by chemical, physical and microbiological analysis of soil. Additionally, a first screening was done on the potential toxicity of biochar on plant seeds, using Lepidium sativum as model species, and earthworm (Lombricus terrestris) as bioindicator of the soil quality (Standard methods: ISO 17512-1:2008). To accomplish this aim, the main chemical parameters of the substrates were analyzed: moisture, pH, electrical conductivity (EC), ash, organic matter (OM), cation exchange capacity (CEC), total nitrogen (N), total and available phosphorus (P) and organic carbon (Corg). The main nutritional traits (free sugar, phenols, protein content, etc) were determined in plants. The amounts of toxic elements were assessed in plants and substrates. In detail, sixteen polycyclic aromatic hydrocarbons and main polychlorinated biphenyls were analyzed after automated Soxhlet extraction using 1:1 (v/v) acetone/hexane (EPA methods 3541) and quantified by GC-MS. The heavy metal concentrations were analyzed by using atomic absorption spectrophotometer (ISO 11466). For microbiological analysis, the activity of 19 hydrolytic enzymes was assessed by API-ZYM system together with the analysis of total aerobic viable, cellulolytic and spore-forming bacteria. Experimental results showed that biochar was not toxic to biotic soil communities (seeds and earthworms). The chemical analysis of PS lettuce plants indicated that biochar increased EC, OM, total N, Corg, total and available P in PSB and PSCB. However, the highest increments were obtained in PSBC. The chemical analysis of soil growing tomato plants demonstrated that the biochar addition increased EC, OM, Corg, total N and moisture in PSB and RSB; whereas total and available P increased in PSB and RSB, respectively. Again, the highest increments were obtained in RSB. No variations were recorded in Cd, Cr, Co and Pb content between the different treatments. Microbiological analysis confirmed that biochar increased the microbe biomass and the enzymatic activities. Analyses of substrate-microbe-plant system provide an experimental framework that help defining the benefit and toxicity of biochar addition on physical and chemical properties of PS and RS, as well as the interactions with microbial communities. |
| اللغة: | English |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=cnr_________::b38cd5bae638f3b6ee9e92b0a120ce4f https://publications.cnr.it/doc/344739 |
| رقم الأكسشن: | edsair.cnr...........b38cd5bae638f3b6ee9e92b0a120ce4f |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |