Carbon and nitrogen distribution in water-stable aggregates under two tillage techniques in Fluvisols of Owerri area, southeastern Nigeria

Onweremadu, E. U.; Onyia, V. N.; Anikwe, M. A. N.

doi:10.1016/j.still.2007.09.011

Cited by 65 publications

(42 citation statements)

References 25 publications

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“…De maneira geral, sistemas que mobilizam menos o solo, como o cultivo mínimo e o plantio direto, promovem a elevação do carbono orgânico na superfície do solo sendo que esta condição, por sua vez, propicia um aumento da estabilidade dos agregados de tamanho maior (Melissa et al, 2006;Onweremadu et al, 2007;Razafimbelo et al, 2008;Simansky et al, 2008;Aratani et al, 2009;Jacobs et al, 2009;Veiga et al, 2009). …”

Section: Introductionunclassified

Fatores relacionados à suscetibilidade da erosão em entressulcos sob condições de uso e manejo do solo

Oliveira

Buarque

Viero

et al. 2012

Rev. bras. eng. agríc. ambient.

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R ESU M ONeste trabalho foram avaliados fatores relacionados com a suscetibilidade a erosão em entressulcos de um Neossolo Litólico submetido a diferentes intensidades de uso e manejo do solo. O experimento foi realizado em condições de laboratório, utilizando-se amostras deformadas de solo colocadas em parcelas experimentais (0,23 m . O delineamento experimental utilizado foi em blocos casualizados, em que foram aplicadas chuvas simuladas com intensidade de 100 mm h -1 para os seguintes tratamentos: (I) solo cultivado com fumo sob preparo convencional (PC); (II) solo cultivado com fumo sob plantio direto (PD) e (III) solo sob mata nativa (MN). Para avaliar a suscetibilidade a erosão em entressulcos utilizaram-se índices referentes à relação energia cinética total (chuva e escoamento) sobre perda de solo, taxa média de desagregação e índice de estabilidade de agregados, cujos resultados mostraram que os fatores relacionados com a suscetibilidade a erosão em entressulcos estão associados não apenas com características e propriedades que conferem coesividade ao solo, mas, também, com condicionantes que afetam a hidráulica do escoamento e, consequentemente, a fase de transporte dos sedimentos. . The experimental design was in randomized blocks. Simulated rainfall intensity of 100 mm h -1 was applied to the following treatments: (I) conventionally tilled soil; (II) no-till soil; and (III) native forest soil. Total kinetic energy (rainfall and runoff) to soil loss, average rate of detachment, and aggregate stability indexes were used to assess susceptibility to interrill erosion. Results show that the factors related with the susceptibility to interrill erosion are associated not just to the characteristics and properties that confer cohesivity to soil, but also to those factors that affect runoff hydraulics and therefore the sediment transport phase as well.

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Section: Introductionunclassified

Fatores relacionados à suscetibilidade da erosão em entressulcos sob condições de uso e manejo do solo

Oliveira

Buarque

Viero

et al. 2012

Rev. bras. eng. agríc. ambient.

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“…One of the most important binding agents for forming stable aggregates is soil organic matter (Tisdall & Oades 1982;Polláková 2012;Šimanský 2013b). Organic matter affects soil aggregates stability by reducing their 'wettability' , and by influencing their mechanical strength (Onweremadu et al 2007;Krol et al 2013).…”

mentioning

confidence: 99%

Stability of soil aggregates and their ability of carbon sequestration

Šimanský¹,

Bajčan²

2014

Soil & Water Res.

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AbstractŠimanský V., Bajčan D. (2014): Stability of soil aggregates and their ability of carbon sequestration. Soil & Water Res., 9: 111-118.One of the most important binding agents for forming stable aggregates is a soil organic matter (SOM), which can be retained in various size fractions of aggregates. If aggregates are water-resistant, they retain more carbon. Therefore, the aim of this study was to evaluate the stability of aggregates and their ability of carbon sequestration in different soil types and soil management systems in Slovakian vineyards. The highest content of water-stable macro-aggregates (WSA ma ) was determined in Cambisols, and the lowest in Fluvisols. The highest content of WSA ma (size fraction 0.5-3 mm) was determined in Chernozems, decreasing within the following sequence: Fluvisols > Leptosols > Cambisols > Luvisols. The soil type had a statistically significant influence on the re-distribution of soil organic matter in size fractions of water-stable aggregates. The highest content of SOM in water-stable aggregates of the vineyards was determined in grassy strips in-between the vineyard rows in comparison to intensively cultivated rows of vineyard. The highest values of carbon sequestration capacity (CSC) in WSA ma were found in Cambisols > Leptosols and the lowest values of CSC were in Fluvisols. The microaggregates represented a significant carbon reservoir for the intensively cultivated soils (rows of vineyard). On the other hand, increasing of macro-aggregates (size fraction 0.5-3 mm) was characteristic for grassland soils (between the rows of vineyard).

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“…Organic matter influences soil structure and stability by binding soil mineral particles and influencing the mechanical strength of soil aggregates (Onweremadu et al, 2007). Work by Cercioglu et al (2013) has explained that some sources of organic matter (poultry manure, bio-humus and composted tobacco waste) has an important contribution on the soil physical properties in sandy loam texture class.…”

Section: Introductionmentioning

confidence: 99%

Farklı Bitki Yönetimi Altındaki Toprakların Strüktürel Ölçütlerindeki Değişimler

Hacımüftüoğlu¹,

Öztaş²

2017

Atatürk Üniversitesi Ziraat Fakültesi Dergisi

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Soil structure is one of the most important soil physical characteristics affecting on soil productivity. Structural development of soil is under the control of many inside and outside factors. It is expected that soil structural characteristics change with changes in plant pattern because of differentiations in agronomic properties, root system and amounts of organic matter incorporated into the soil. The objective of this study was to evaluate changes in structural behaviors of soils under different crop management systems. Soil samples collected from long-term (+10 years) experimental fields under different crop management systems; sun flower, wheat, bean, corn, potato and alfalfa, were analyzed for physical, chemical and mechanical properties and structural characteristics were evaluated. The results indicated that soil structural characteristics significantly changed depending on plant patterns. Structural conditions and aggregate stability were the highest in soils under alfalfa crops, but the worst in soils under potatoes and corn production.Keywords: Aggregate stability, cropping pattern, soil structure Farklı Bitki Yönetimi Altındaki Toprakların Strüktürel Ölçütlerindeki DeğişimlerÖZET: Toprak strüktürü, toprağın üretim potansiyelini belirleyen en önemli fiziksel ortam özelliklerinden biridir. Toprakta strüktürel gelişim birçok iç ve dış faktörün kontrolü altındadır. Farklı bitki yönetim uygulamaları bitkinin agronomik özellikleri, kök sistemi ve toprağa organik madde döngüsü farklılıkları dahilinde toprağın strüktürel durumunu önemli ölçüde etkilemektedir. Farklı bitki yönetimi altında bulunan toprakların yapısal özelliklerinde meydana gelen değişimlerin değerlendirmesi amacıyla yürütülen bu çalışmada; uzun yıllardan (+10 yıl) beri farklı bitki yetiştiriciliği (ayçiçeği, buğday, fasulye, mısır, patates ve yonca) altında bulunan deneme alanlarından alınan toprak örneklerinde fiziksel, kimyasal ve mekaniksel özellikler incelenerek yetiştirilen bitkilerin, toprağın strüktürel parametreleri üzerindeki etkileri değerlendirilmiştir. Elde edilen bulgular toprağın strüktürel parametrelerinde, yetiştirilen bitki çeşitliliğine bağlı olarak önemli farklılıkların meydana geldiğini göstermektedir. Strüktürel gelişim derecesi ve agregat stabilitesinin yonca ekim alanlarından alınan toprak örneklerinde en yüksek, patates ve mısır ekim alanlarından alınan toprak örneklerinde ise en düşük değerlerde olduğu saptanmıştır.

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Carbon and nitrogen distribution in water-stable aggregates under two tillage techniques in Fluvisols of Owerri area, southeastern Nigeria

Cited by 65 publications

References 25 publications

Fatores relacionados à suscetibilidade da erosão em entressulcos sob condições de uso e manejo do solo

Fatores relacionados à suscetibilidade da erosão em entressulcos sob condições de uso e manejo do solo

Stability of soil aggregates and their ability of carbon sequestration

Farklı Bitki Yönetimi Altındaki Toprakların Strüktürel Ölçütlerindeki Değişimler

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