Academic Journal
Biochar decreases nutrient leaching in KCl-fertilized Podzols grown with black mucuna
| العنوان: | Biochar decreases nutrient leaching in KCl-fertilized Podzols grown with black mucuna |
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| المؤلفون: | Luciana Aparecida Rodrigues, Caroline Cândida Martins, Tainá Costa Araújo, Claudio Roberto Marciano, Júlia Gallon Barcelos, Rosely Menezes da Silva Ribeiro, Mauricio Gonçalves da Silva, Deborah Guerra Barroso |
| المصدر: | Revista Brasileira de Ciência do Solo, Vol 47 (2023) |
| بيانات النشر: | Sociedade Brasileira de Ciência do Solo |
| سنة النشر: | 2023 |
| المجموعة: | Directory of Open Access Journals: DOAJ Articles |
| مصطلحات موضوعية: | green manure, K accumulated, soil-plant system, nutrient loss, Agriculture (General), S1-972 |
| الوصف: | Podzols are highly sandy soils, in which elements, such as potassium, needed by crops, are easily leached. Studies have indicated that biochar can contribute to increasing cation exchange capacity of the soil, which can improve the retention of bases. This study aimed to evaluate the effect of the poultry litter biochar combined or not with increasing doses of KCl, on leaching and soil base content, on the production of green manure biomass, and on the distribution of K in the soil-water-plant system. A 2 × 3 factorial experiment was conducted in randomized blocks with 6 repetitions: without and with biochar (1% v / v, produced from poultry litter) × without K, with 53.65 and 107.30 mg dm-3 of K (as KCl). The experiment was carried out in four steps: Step 1) Soil incubation with the treatments (for 20 days) followed by chemical analysis of the soil; Step 2) First leaching: the containers (made with PVC with 0.30 m high) received the newly incubated soil in the surface layer and soil without treatment in the subsurface layer. The containers received water until saturation plus 50 % of the total pore volume and the leached water was collected and analyzed; Step 3) Cultivation of green manure (Mucuna aterrima) in the containers of Step 2 and harvest within 40 days (evaluation of biomass and K content); Step 4) after the mucuna harvest, the containers were subjected to second leaching. The leaching solution and the soil from the surface and subsurface layers were collected for chemical analysis. Biochar increased the pH, cationic exchange capacity, P, K, Ca, and Mg levels in the newly incubated soil, in the surface and subsurface layer. The increasing doses of KCl proportionally increased biomass production and K accumulation in green manure, and the biochar increased this response and reduces the need for potassium fertilization by 50 %. With biochar, the accumulation of total K in the soil-plant-water system increases by 125 % and, in the soil-plant system, by 145 %. Biochar changes the K ratio in the ... |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 1806-9657 |
| Relation: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832023000100501&lng=en&tlng=en; http://www.scielo.br/pdf/rbcs/v47/1806-9657-rbcs-47-e0220086.pdf; https://doaj.org/toc/1806-9657; https://doaj.org/article/76e2f58aae504650b2c21680ecf107e4 |
| DOI: | 10.36783/18069657rbcs20220086 |
| الاتاحة: | https://doi.org/10.36783/18069657rbcs20220086 https://doaj.org/article/76e2f58aae504650b2c21680ecf107e4 |
| رقم الانضمام: | edsbas.1E97183C |
| قاعدة البيانات: | BASE |
| تدمد: | 18069657 |
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| DOI: | 10.36783/18069657rbcs20220086 |