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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
11/08/2025 |
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Data da última atualização: |
11/08/2025 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
INACIO, C. de T.; URQUIAGA, S.; CHALK, P. M. |
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Afiliação: |
CAIO DE TEVES INACIO, CNPAB; SEGUNDO SACRAMENTO URQUIAGA CABALLERO, CNPAB; PHILLIP MICHAEL CHALK, UNIVERSITY OF MELBOURNE. |
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Título: |
Using the 15N natural abundance for a quantitative approach to N recovery from organic fertilizers. |
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Ano de publicação: |
2025 |
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Fonte/Imprenta: |
Revista Brasileira de Ciência do Solo, v. 49, e0240182, 2025. |
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ISSN: |
1806-9657 |
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DOI: |
10.36783/18069657rbcs20240182 |
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Idioma: |
Inglês |
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Conteúdo: |
The influence of organic inputs, such as manure and compost, on the 15N values of growing plants suggests it may be possible to use of 15N natural abundance (NA) as a nitrogen (N) tracer. This study aimed to verify the feasibility of using the TM15N values to estimate compost-N recovery by plants. A field experiment was carried out by growing head lettuce, carrots and broccoli in sequence under increasing levels of compost (randomized complete blocks, six doses, four replicates). The compost was produced on-farm using horse bedding manure and vegetable waste. We found a positive and significant correlation between vegetables yield × TM15N-plant as well as between N-harvested × TM15N-plant, alongside the response to the increasing levels of compost. Positive and significant (α = 0.05) correlations were found for carrots (R = 0.91 and 0.95) meanwhile, no significant correlations were found for broccoli (R = 0.60 and 0.66). Lettuce did not respond to compost levels. We applied an equation to estimate compost-N recovery by carrots based on the variation pattern that was found in TM15N-plant. A positive and significant correlation between TM15N-plant and plant yield (or N harvested) is the first condition to obtain valid estimates. The estimated compost-N recovery for carrots was from 4.7 to 9.1 %, respectively, at 0.5 and 2.0 kg m-2 of compost (dry basis). Sources of uncertainty are also discussed, and include intra-plant 15N fractionation, which might require further studies of sampling strategies. This study shows the theoretical and experimental basis of using compost (dry basis). Sources of uncertainty are also discussed, and include intra-plantN to estimate organic fertilizer-N recovery by crops. MenosThe influence of organic inputs, such as manure and compost, on the 15N values of growing plants suggests it may be possible to use of 15N natural abundance (NA) as a nitrogen (N) tracer. This study aimed to verify the feasibility of using the TM15N values to estimate compost-N recovery by plants. A field experiment was carried out by growing head lettuce, carrots and broccoli in sequence under increasing levels of compost (randomized complete blocks, six doses, four replicates). The compost was produced on-farm using horse bedding manure and vegetable waste. We found a positive and significant correlation between vegetables yield × TM15N-plant as well as between N-harvested × TM15N-plant, alongside the response to the increasing levels of compost. Positive and significant (α = 0.05) correlations were found for carrots (R = 0.91 and 0.95) meanwhile, no significant correlations were found for broccoli (R = 0.60 and 0.66). Lettuce did not respond to compost levels. We applied an equation to estimate compost-N recovery by carrots based on the variation pattern that was found in TM15N-plant. A positive and significant correlation between TM15N-plant and plant yield (or N harvested) is the first condition to obtain valid estimates. The estimated compost-N recovery for carrots was from 4.7 to 9.1 %, respectively, at 0.5 and 2.0 kg m-2 of compost (dry basis). Sources of uncertainty are also discussed, and include intra-plant 15N fractionation, which might require further studies of... Mostrar Tudo |
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Thesaurus Nal: |
Animal manures; Composts; Nutrient management; Plant nutrition; Vegetables. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02426naa a2200229 a 4500
001 2177909
005 2025-08-11
008 2025 bl uuuu u00u1 u #d
022 $a1806-9657
024 7 $a10.36783/18069657rbcs20240182$2DOI
100 1 $aINACIO, C. de T.
245 $aUsing the 15N natural abundance for a quantitative approach to N recovery from organic fertilizers.$h[electronic resource]
260 $c2025
520 $aThe influence of organic inputs, such as manure and compost, on the 15N values of growing plants suggests it may be possible to use of 15N natural abundance (NA) as a nitrogen (N) tracer. This study aimed to verify the feasibility of using the TM15N values to estimate compost-N recovery by plants. A field experiment was carried out by growing head lettuce, carrots and broccoli in sequence under increasing levels of compost (randomized complete blocks, six doses, four replicates). The compost was produced on-farm using horse bedding manure and vegetable waste. We found a positive and significant correlation between vegetables yield × TM15N-plant as well as between N-harvested × TM15N-plant, alongside the response to the increasing levels of compost. Positive and significant (α = 0.05) correlations were found for carrots (R = 0.91 and 0.95) meanwhile, no significant correlations were found for broccoli (R = 0.60 and 0.66). Lettuce did not respond to compost levels. We applied an equation to estimate compost-N recovery by carrots based on the variation pattern that was found in TM15N-plant. A positive and significant correlation between TM15N-plant and plant yield (or N harvested) is the first condition to obtain valid estimates. The estimated compost-N recovery for carrots was from 4.7 to 9.1 %, respectively, at 0.5 and 2.0 kg m-2 of compost (dry basis). Sources of uncertainty are also discussed, and include intra-plant 15N fractionation, which might require further studies of sampling strategies. This study shows the theoretical and experimental basis of using compost (dry basis). Sources of uncertainty are also discussed, and include intra-plantN to estimate organic fertilizer-N recovery by crops.
650 $aAnimal manures
650 $aComposts
650 $aNutrient management
650 $aPlant nutrition
650 $aVegetables
700 1 $aURQUIAGA, S.
700 1 $aCHALK, P. M.
773 $tRevista Brasileira de Ciência do Solo$gv. 49, e0240182, 2025.
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