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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
23/09/2025 |
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Data da última atualização: |
23/09/2025 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
TOMAZ, A. R.; SILVA, W. R. da; INAGAKI, T. M.; SANTOS, E. O.; FRACETTO, G. G. M.; FRACETTO, F. J. C.; FREITAS, V. da S.; BABOS, D. V.; MILORI, D. M. B. P.; MONTENEGRO, A. A. de A.; FERREIRA, A. de O. |
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Afiliação: |
FEDERAL RURAL UNIVERSITY OF PERNAMBUCO; FEDERAL RURAL UNIVERSITY OF PERNAMBUCO; NORWEGIAN INSTITUTE OF BIOECONOMY RESEARCH (NIBIO), DEPARTMENT OF BIOGEOCHEMISTRY AND SOIL QUALITY, HØGSKOLEVEIEN; FEDERAL RURAL UNIVERSITY OF PERNAMBUCO; FEDERAL RURAL UNIVERSITY OF PERNAMBUCO; FEDERAL RURAL UNIVERSITY OF PERNAMBUCO; DEBORA MARCONDES BASTOS PEREIRA, CNPDIA; FEDERAL RURAL UNIVERSITY OF PERNAMBUCO; FEDERAL RURAL UNIVERSITY OF PERNAMBUCO. |
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Título: |
Impacts of reclaimed water irrigation on mulch decomposition, microbial activity, and soil nutrient availability in the Brazilian semi-arid. |
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Ano de publicação: |
2025 |
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Fonte/Imprenta: |
Geoderma Regional, v. 42, e00978, 2025. |
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Páginas: |
11 p. |
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ISSN: |
2352-0094 |
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DOI: |
https://doi.org/10.1016/j.geodrs.2025.e00978 |
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Idioma: |
Inglês |
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Conteúdo: |
Knowledge gaps persist regarding mulch decomposition, nutrient dynamics, and microbial responses in semi-arid soils under reclaimed water irrigation. This is a critical issue for water-scarce regions like the Brazilian semi-arid. This study evaluated these processes in cactus-sorghum intercropping systems with mulch under irrigation depths with reclaimed water. The study employed a randomized block design with four replicates, testing irrigation depths of 0 %, 80 %, 100 %, and 120 % of sorghum ETc. Mulch decomposition was monitored for 165 days using litter bags, with subsequent C/N analysis of residual biomass. Soils at 0–0.10 m and 0.10–0.20 m depths were sampled to determine the contents of NO₃ − , NH₄ +, P, and microbial biomass C (MB-C), basal soil respiration, and aromatization index (ALIFS). Decomposition revealed the highest rates at 10 days (16 %) under 80 % ETc and at 25 days (24 %, 22 %, and 21 %) under 80 %, 100 %, and 120 % ETc, surpassing non-irrigated soils. Residue half-life was 182–196 days. Mulch N content declined most sharply at 10 days (1.2–1.8 g kg− 1 in irrigated treatments). Soil NH₄ + and NO₃ − peaked in the 0–0.10 m layer, but nitrate decreased by 15–62 % at 65 days, signaling microbial disruption from water excess. MB-C dropped >90 % at 65 days but recovered by 165 days, with the 80 % and 100 % treatments showing the highest MB-C in surface soils. These treatments also increased available P₂O₅ by 46–216 mg kg− 1 versus 0 % and 120 % ETc. The ALIFS was higher in irrigated soils, especially at 120 % ETc (0–0.10 m). Reclaimed water irrigation enhanced nutrient supply, decomposition, and microbial activity, reducing synthetic fertilizer dependency while improving soil health in semi-arid agroecosystems. MenosKnowledge gaps persist regarding mulch decomposition, nutrient dynamics, and microbial responses in semi-arid soils under reclaimed water irrigation. This is a critical issue for water-scarce regions like the Brazilian semi-arid. This study evaluated these processes in cactus-sorghum intercropping systems with mulch under irrigation depths with reclaimed water. The study employed a randomized block design with four replicates, testing irrigation depths of 0 %, 80 %, 100 %, and 120 % of sorghum ETc. Mulch decomposition was monitored for 165 days using litter bags, with subsequent C/N analysis of residual biomass. Soils at 0–0.10 m and 0.10–0.20 m depths were sampled to determine the contents of NO₃ − , NH₄ +, P, and microbial biomass C (MB-C), basal soil respiration, and aromatization index (ALIFS). Decomposition revealed the highest rates at 10 days (16 %) under 80 % ETc and at 25 days (24 %, 22 %, and 21 %) under 80 %, 100 %, and 120 % ETc, surpassing non-irrigated soils. Residue half-life was 182–196 days. Mulch N content declined most sharply at 10 days (1.2–1.8 g kg− 1 in irrigated treatments). Soil NH₄ + and NO₃ − peaked in the 0–0.10 m layer, but nitrate decreased by 15–62 % at 65 days, signaling microbial disruption from water excess. MB-C dropped >90 % at 65 days but recovered by 165 days, with the 80 % and 100 % treatments showing the highest MB-C in surface soils. These treatments also increased available P₂O₅ by 46–216 mg kg− 1 versus 0 % and 120 % ETc. The ALIFS ... Mostrar Tudo |
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Palavras-Chave: |
Aromatization index; Decomposition rate; Fluorescence spectroscopy; Intercropping system. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02819naa a2200325 a 4500
001 2179040
005 2025-09-23
008 2025 bl uuuu u00u1 u #d
022 $a2352-0094
024 7 $ahttps://doi.org/10.1016/j.geodrs.2025.e00978$2DOI
100 1 $aTOMAZ, A. R.
245 $aImpacts of reclaimed water irrigation on mulch decomposition, microbial activity, and soil nutrient availability in the Brazilian semi-arid.$h[electronic resource]
260 $c2025
300 $a11 p.
520 $aKnowledge gaps persist regarding mulch decomposition, nutrient dynamics, and microbial responses in semi-arid soils under reclaimed water irrigation. This is a critical issue for water-scarce regions like the Brazilian semi-arid. This study evaluated these processes in cactus-sorghum intercropping systems with mulch under irrigation depths with reclaimed water. The study employed a randomized block design with four replicates, testing irrigation depths of 0 %, 80 %, 100 %, and 120 % of sorghum ETc. Mulch decomposition was monitored for 165 days using litter bags, with subsequent C/N analysis of residual biomass. Soils at 0–0.10 m and 0.10–0.20 m depths were sampled to determine the contents of NO₃ − , NH₄ +, P, and microbial biomass C (MB-C), basal soil respiration, and aromatization index (ALIFS). Decomposition revealed the highest rates at 10 days (16 %) under 80 % ETc and at 25 days (24 %, 22 %, and 21 %) under 80 %, 100 %, and 120 % ETc, surpassing non-irrigated soils. Residue half-life was 182–196 days. Mulch N content declined most sharply at 10 days (1.2–1.8 g kg− 1 in irrigated treatments). Soil NH₄ + and NO₃ − peaked in the 0–0.10 m layer, but nitrate decreased by 15–62 % at 65 days, signaling microbial disruption from water excess. MB-C dropped >90 % at 65 days but recovered by 165 days, with the 80 % and 100 % treatments showing the highest MB-C in surface soils. These treatments also increased available P₂O₅ by 46–216 mg kg− 1 versus 0 % and 120 % ETc. The ALIFS was higher in irrigated soils, especially at 120 % ETc (0–0.10 m). Reclaimed water irrigation enhanced nutrient supply, decomposition, and microbial activity, reducing synthetic fertilizer dependency while improving soil health in semi-arid agroecosystems.
653 $aAromatization index
653 $aDecomposition rate
653 $aFluorescence spectroscopy
653 $aIntercropping system
700 1 $aSILVA, W. R. da
700 1 $aINAGAKI, T. M.
700 1 $aSANTOS, E. O.
700 1 $aFRACETTO, G. G. M.
700 1 $aFRACETTO, F. J. C.
700 1 $aFREITAS, V. da S.
700 1 $aBABOS, D. V.
700 1 $aMILORI, D. M. B. P.
700 1 $aMONTENEGRO, A. A. de A.
700 1 $aFERREIRA, A. de O.
773 $tGeoderma Regional$gv. 42, e00978, 2025.
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