Contribution of nitrification happened in rhizospheric soil growing with different rice cultivars to N nutrition

Li, Y. L.; Zhang, Yinglao; Hu, Jun; Shen, Qi

doi:10.1007/s00374-006-0119-0

Cited by 56 publications

(45 citation statements)

References 31 publications

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“…Arf et al (2001), Bordin et al (2003), Cazetta et al (2008) and Pacheco (2009) also obtained higher upland rice yield using millet as cover crop. This can be attributed to a better development of upland rice with low nitrate/ammonium ratio, in the first weeks of crop development (Lin et al, 2005;Li et al, 2007;Holzschuh et al, 2009;Poletto et al, 2011;Araújo et al, 2012). Millet provided the lowest amount of nitrate and the highest level of ammonium to the soil in almost all evaluations.…”

Section: Resultsmentioning

confidence: 91%

“…Millet provided the lowest amount of nitrate and the highest level of ammonium to the soil in almost all evaluations. The fact that rice plants came from a hydrophilic environment (Lin et al, 2005), where N-NH 4 + prevails (Schjoerring et al, 2002;Li et al, 2007), can explain this preference for low nitrate/ammonium ratio. Araújo et al (2012) reported that upland rice plants have difficulty in metabolizing nitrate in the early development, since the production of nitrate reductase enzyme by this crop takes time to begin.…”

Section: Resultsmentioning

confidence: 99%

“…However, Lin et al (2005), Li et al (2007), Holzschuh et al (2009), Poletto et al (2011 and Araújo et al (2012) showed that upland rice perform best when NH 4 + is predominant during the initial development of plants. However, these authors warn that the exclusive availability of ammonium can be detrimental for rice plants, and ranges around to 50-75% nitrate and 50-25% ammonium provide better upland rice performance.…”

Section: Introductionmentioning

confidence: 96%

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Ammonium and nitrate in soil and upland rice yield as affected by cover crops and their desiccation time

Nascente

Crusciol

Cobucci

2012

Pesq. agropec. bras.

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-The objective of this work was to evaluate the effect of cover crops and their desiccation times on upland rice yield and on the levels of nitrate and ammonium in a no-tillage soil. The experiment was carried out in a randomized blocks, with split plots and three replicates. Cover crops (plots) were sowed in the offseason (March 2009). In November 2009, at 30, 20, 10 and 0 days before rice sowing (split plots), herbicide was applied on the cover crops (fallow, Panicum maximum, Urochloa ruziziensis, U. brizantha and millet). Straw and soil were sampled (0-10 cm) at the sowing day, and after 7, 14, 21, 28 and 35 days. Straws from millet and fallow were degraded more rapidly and provided the lowest level of nitrate in the soil. Urochloa ruziziensis, U. brizantha and P. maximum produced higher amounts of dry matter, and provided the highest levels of nitrate in the soil. Millet provides the lowest nitrate/ammonium ratio and the highest upland rice yield. Desiccations carried out at 30 and 20 days before sowing had the largest levels of nitrate in the soil at the sowing date. Nitrogen content and forms in the soil are affected by cover crops and their desiccation times.Index terms: Oryza sativa, Panicum maximum, Urochloa brizantha, Urochloa ruziziensis, millet, nitrogen. Amônio e nitrato no solo e produtividade do arroz de terras altas influenciados por plantas de cobertura e suas épocas de dessecaçãoResumo -O objetivo deste trabalho foi avaliar o efeito de plantas de cobertura e de suas épocas de dessecação na produtividade do arroz de terras altas e nos níveis de nitrato e amônio de solo em plantio direto. O experimento foi realizado em blocos ao acaso, com parcelas subdivididas e três repetições. As plantas de cobertura (parcelas) foram semeadas na entressafra (março de 2009). Em novembro de 2009, aos 30, 20, 10 e 0 dias antes da semeadura do arroz (parcelas subdivididas), realizou-se o manejo químico das plantas de cobertura (pousio, Panicum maximum, Urochloa ruziziensis, U. brizantha e milheto). As palhadas e o solo (camada 0-10 cm) foram amostrados no dia da semeadura do arroz e após 7, 14, 21, 28 e 35 dias. As palhas do milheto e do pousio degradaram-se mais rapidamente e proporcionaram os menores níveis de nitrato ao solo. Urochloa ruziziensis, U. brizantha e P. maximum produziram mais matéria seca e proporcionaram os maiores níveis de nitrato no solo. O milheto proporciona menor relação nitrato/amônio no solo e maior produtividade do arroz. A dessecação aos 30 e 20 dias da semeadura do arroz proporciona os maiores níveis de nitrato no solo, na data de plantio. O conteúdo e a forma do nitrogênio no solo são afetados pelas plantas de cobertura e por suas épocas de dessecação.

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Section: Resultsmentioning

confidence: 91%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

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Ammonium and nitrate in soil and upland rice yield as affected by cover crops and their desiccation time

Nascente

Crusciol

Cobucci

2012

Pesq. agropec. bras.

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“…Embora os solos alagados sejam predominantemente anaeróbicos, as condições de aerobiose na rizosfera das plantas de arroz, frequentemente, ocasionam a oxidação do N-NH 4 + para N-NO 3 -e contribuem para que ocorram variações na proporção entre essas formas de N ao longo do ciclo de cultivo do arroz (Li et al, 2007).…”

Section: Introductionunclassified

“…Em trigo, o suprimento somente do N-NH 4 + reduziu a emissão e o desenvolvimento de afilhos (Wang e Below, 1996). Em arroz, estudos recentes apontam redução entre 15% e 60% no crescimento e desenvolvimento foliar (Lin et al, 2005;Li et al, 2007) e no rendimento final de grãos (Qian et al, 2004) (Miller et al, 1991e Fageria, 2007 o qual, por sua vez, é dependente da emissão e do desenvolvimento de afilhos durante o estádio vegetativo nessa cultura. Os afilhos primários são emitidos durante o início do crescimento vegetativo (Counce et al, 2000) e estes, depois de emitidos, podem ou não se tornar produtivos durante o ciclo de desenvolvimento do arroz (Nemoto, 1995).…”

Section: Introductionunclassified

Padrão de afilhamento em arroz afetado pela presença dos íons amônio e nitrato

Poletto

Mundstock²,

Grohs

et al. 2011

Bragantia

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ResumoO padrão de afilhamento do arroz é afetado pela nutrição nitrogenada, no início do desenvolvimento das plantas, sendo determinado pelo número de afilhos emitidos e pelo sincronismo de desenvolvimento entre afilhos e colmo principal. O objetivo deste trabalho foi estudar a emissão e o sincronismo de desenvolvimento de afilhos com o colmo principal na cultivar de arroz IRGA 417, cultivada em solução nutritiva com concentrações de N (1, 5 e 10 mmol L , a presença do N-NH 4 + (100 e 75%) prejudicou essas características. A presença de N-NO 3 -(em pelo menos 50% do suprimento do N) inibiu o efeito prejudicial. Em concentrações mais elevadas de N, é necessária a presença do nitrato, em pelo menos 50% do total de N suprido para que não ocorra inibição na emissão e no sincronismo dos afilhos.Palavras-chave: Oryza sativa, emissão de afilho, nitrogênio. Rice tillering pattern as affected by the presence of ammonium and nitrate ionsAbstract Rice development is affected by nitrogen, specially its tillering pattern which is determined by number of tillers. Tillers synchronism with main stem is related to leaves emission rate and both traits affect the number of productive culms potential. Tiller emission and synchronism of leaf development between main stem and tillers were studied in rice plants (cv IRGA 417) cultivated in a hydroponic solution (Hoagland) under three N concentrations (1, 5 e 10 mmol L -1 ), each with different proportion of 75:25; 50:50; 25:75). The different proportions under 1 mmol L -1 were similar for tiller number, synchronism, and productive culms. All traits (tiller number, synchronism and productive culms) were negatively affected when higher levels of N-NH 4 + ion (5 and 10 mmol L -1 -100 and 75% of N ions) were supplied to plants. Nevertheless, when N-NO 3 -ion was present in at least 50% of the solution, the detrimental effects were not found. When N was at 1 mmol L -1 , rice plants tolerate N-NH 4 + ion presence, independently of the presence of N-NO 3 -ion. At higher N concentrations, it is necessary at least 50% of N-NO 3 -ion in order to avoid detrimental effects on tillering.

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Rhizosphere soil nitrification ability controls nitrogen‐use efficiency in rice growth period

Zhang

Liao

et al. 2022

Food and Energy Security

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Contribution of nitrification happened in rhizospheric soil growing with different rice cultivars to N nutrition

Cited by 56 publications

References 31 publications

Ammonium and nitrate in soil and upland rice yield as affected by cover crops and their desiccation time

Ammonium and nitrate in soil and upland rice yield as affected by cover crops and their desiccation time

Padrão de afilhamento em arroz afetado pela presença dos íons amônio e nitrato

Rhizosphere soil nitrification ability controls nitrogen‐use efficiency in rice growth period

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