Senna siamea trees recycle Ca from a Ca-rich subsoil and increase the topsoil pH in agroforestry systems in the West African derived savanna zone

Vanlauwe, Bernard; Aihou, K.; Tossah, B.K.; Diels, Jan; Sanginga, N.; Merckx, Roel

doi:10.1007/s11104-004-0599-3

Cited by 31 publications

(20 citation statements)

References 22 publications

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“…For certain constraints, however, organic resource application and improved germplasm are not a suitable solution and other amendments or practices are required (Table 1). For instance, removing a hardpan that restricts crop root growth will require deep ploughing in most cases (though in some cases, the use of deep-rooting trees or grasses could be a solution) (Amézquita et al, 2004;Vanlauwe et al, 2005). For instance, alleviating soil acidity constraints beyond a single season can only be achieved through the incorporation of the right amount and quality of lime.…”

Section: Limitations Of Improved Germplasm and Organic Resources To Mmentioning

confidence: 99%

Integrated soil fertility management in sub-Saharan Africa: unravelling local adaptation

Vanlauwe

Descheemaeker

Giller

et al. 2015

SOIL

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309

144

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Abstract. Intensification of smallholder agriculture in sub-Saharan Africa is necessary to address rural poverty and natural resource degradation. Integrated soil fertility management (ISFM) is a means to enhance crop productivity while maximizing the agronomic efficiency (AE) of applied inputs, and can thus contribute to sustainable intensification. ISFM consists of a set of best practices, preferably used in combination, including the use of appropriate germplasm, the appropriate use of fertilizer and of organic resources, and good agronomic practices. The large variability in soil fertility conditions within smallholder farms is also recognized within ISFM, including soils with constraints beyond those addressed by fertilizer and organic inputs. The variable biophysical environments that characterize smallholder farming systems have profound effects on crop productivity and AE, and targeted application of agro-inputs and management practices is necessary to enhance AE. Further, management decisions depend on the farmer's resource endowments and production objectives. In this paper we discuss the "local adaptation" component of ISFM and how this can be conceptualized within an ISFM framework, backstopped by analysis of AE at plot and farm level. At plot level, a set of four constraints to maximum AE is discussed in relation to "local adaptation": soil acidity, secondary nutrient and micronutrient (SMN) deficiencies, physical constraints, and drought stress. In each of these cases, examples are presented whereby amendments and/or practices addressing these have a significantly positive impact on fertilizer AE, including mechanistic principles underlying these effects. While the impact of such amendments and/or practices is easily understood for some practices (e.g. the application of SMNs where these are limiting), for others, more complex processes influence AE (e.g. water harvesting under varying rainfall conditions). At farm scale, adjusting fertilizer applications to within-farm soil fertility gradients has the potential to increase AE compared with blanket recommendations, in particular where fertility gradients are strong. In the final section, "local adaption" is discussed in relation to scale issues and decision support tools are evaluated as a means to create a better understanding of complexity at farm level and to communicate appropriate scenarios for allocating agro-inputs and management practices within heterogeneous farming environments.

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Section: Limitations Of Improved Germplasm and Organic Resources To Mmentioning

confidence: 99%

Integrated soil fertility management in sub-Saharan Africa: unravelling local adaptation

Vanlauwe

Descheemaeker

Giller

et al. 2015

SOIL

Self Cite

309

144

View full text Add to dashboard Cite

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“…O cálcio é considerado um elemento pouco móvel nos vegetais por estar fixado nas estruturas, provavelmente essa é a explicação para os elevados valores encontrados no material aportado. Segundo Vanlauwe et al (2005), o retorno de Ca é importante tanto para o incremento do Ca trocável do solo, como na manutenção do pH na superfície do solo. Para os teores de P não foram verificadas diferenças significativas, sendo esse o nutriente que se apresentou em menores valores quando comparado aos demais.…”

Section: Fatorunclassified

Aporte de Serapilheira e Nutrientes em Área de Restauração Florestal com Diferentes Espaçamentos de Plantio

et al. 2016

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RESUMOOs objetivos deste estudo foram avaliar a deposição de serapilheira ao longo de dois anos e a qualidade nutricional da serapilheira, em função do espaçamento de plantio visando à restauração florestal. Os espaçamentos de plantio 1 × 1; 1,5 × 1,5; 2 × 2 e 3 × 2 m, constituem as unidades amostrais dos tratamentos. No espaçamento 1 × 1 m foi observada a maior deposição de serapilheira, não havendo diferenças entre as unidades dos demais espaçamentos. A fração folha mostrou, em todos os espaçamentos, maior aporte de serapilheira (77%). O maior conteúdo de nutrientes foi observado no espaçamento 1 × 1 m. Em geral, constatou-se a seguinte ordem quanto o conteúdo de nutrientes da serapilheira N > Ca > K > Mg > P.Palavras-chave: nutrição florestal, ciclagem de nutrientes, material decíduo. Litter Production and Forest Nutrients in Forest Restoration Area with Different Planting Spacing ABSTRACTThe objectives of this study were to evaluate the deposition of litter over two years and the nutritional quality of the litter, depending on the planting space aimed at forest restoration. The planting space 1 × 1, 1.5 × 1.5, 2 × 2 and 3 × 2 m, are the sampling units of the treatments. In 1 × 1 m spacing greater deposition of litter, with no differences between the units other spacings was observed. Leaf fraction showed, in all spacings, greater intake of litter (77%). The higher nutrient content was observed in the 1 × 1 m spacing. In general, was observed the following order as the nutrient content of litter N> Ca> K> Mg> P.

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“…No entanto, a deposição de liteira, assim como de nutrientes, pode variar consideravelmente de um ano para o outro, e os fatores climáticos afetam diretamente esse padrão, principalmente a temperatura do ar e a precipitação pluviométrica (LUIZÃO, 2007 (VILLA et al, 2016). O retorno do Ca para o solo é importante como regulador do pH da superfície do perfil, proporcionando condições adequadas para o crescimento vegetal (VANLAUWE et al, 2005).…”

Section: Figuraunclassified

Dinâmica da massa seca e propriedades químicas da liteira em Virola surinamensis e floresta sucessional na Amazônia oriental

Costa¹,

Suzuki²,

Martins³

et al. 2017

Revista Verde

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Resumo: Com a expansão das atividades antrópicas, a floresta tropical amazônica tem sofrido intensas transformações. Após a retirada da vegetação há o abandono desses ecossistemas possibilitando a resiliência natural. Com o intuito de acelerar este processo, é realizado o plantio de diversas espécies nativas para favorecer a ciclagem de nutrientes, com o acúmulo de liteira. Portanto, objetivou-se comparar a deposição de massa seca e as propriedades químicas em floresta em estágio sucessional de desenvolvimento (FSU) Abstract:With the expansion of anthropogenic activities, the Amazon Rain Forest has suffered sweep changes. After the removing of vegetation, there is an abandonment of the ecosystems, allowing a natural resilience. In order to accelerating this process, it is performed the planting of several native species, to promote the nutrient cycling with the deposition of litter fall. Therefore, the objective of this research is to compare the dry mass deposition and the chemical properties in a successional forest ecosystem (FSU) and in Virola surinamensis Rol. (Ward.) (VSU) ecosystem. The experiment was conducted in the coastal tableland of lower in eastern Amazon, and the litter samples taken every two weeks for three years. The study showed that the FSU forest floor were significantly higher (p < 0.05) than the VSU in the stock of litter. The results of forest floor accumulation was 7.94 Mg ha -1 yr -1 and 6.30 Mg ha -1 yr -1 to FSU and VSU, respectively. About chemical properties of litter, K and Mn concentration and content were higher than VSU. To Ca and Mg the concentration was superior in VSU, but the content was not different to two ecosystems. The content and concentration of Fe in FSU, were smaller, and to the same variables, Cu and Zn were not different in the forest and in the monoculture. The deposition of litter and great of elements content showed higher values to successional forest ecosystem because of structural and floristic diversity of species.

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Senna siamea trees recycle Ca from a Ca-rich subsoil and increase the topsoil pH in agroforestry systems in the West African derived savanna zone

Cited by 31 publications

References 22 publications

Integrated soil fertility management in sub-Saharan Africa: unravelling local adaptation

Integrated soil fertility management in sub-Saharan Africa: unravelling local adaptation

Aporte de Serapilheira e Nutrientes em Área de Restauração Florestal com Diferentes Espaçamentos de Plantio

Dinâmica da massa seca e propriedades químicas da liteira em Virola surinamensis e floresta sucessional na Amazônia oriental

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