Soil chemical properties and microbial biomass after 16 years of no-tillage farming on the Loess Plateau, China

Wang, Qingjie; Bai, Yuhua; HuanWen, Gao; He, Jin; Chen, Hao; Chesney, R.C.; Kuhn, N. J.; Li, Hongwen

doi:10.1016/j.geoderma.2008.01.003

Cited by 107 publications

(67 citation statements)

References 28 publications

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“…Esse desempenho do plantio direto sobre a palhada em relação aos demais sistemas é baseada em vários princípios ecológicos, dentre eles, o favorecimento na estocagem de C (FREITAS et al, 2000;SOUZA & MELO, 2003), a diminuição da infestação de plantas espontâneas (DAROLT, 2002;MATEUS et al, 2004), a diminuição da temperatura do solo (SILVA et al, 2006), o aumento da biomassa microbiana (WANG et al, 2008) e a maior economia de água MOREIRA, 2000 que aumenta em solo sob plantio direto (FREITAS et al, 2000), sendo o principal responsável pela maior capacidade de troca, adsorção de água e melhoria da estrutura do solo (PRIMAVESI, 2002).…”

Section: Resultsunclassified

Cultivo orgânico de coentro em plantio direto utilizando cobertura viva e morta adubado com composto

Tavella¹,

Galvão²,

Ferreira³

et al. 2010

Rev. Ciênc. Agron.

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Cultivo orgânico de coentro em plantio direto utilizando cobertura viva e morta adubado com composto 1 Organic faming of coriander in no-tillage system fertilized with compost using dead and living mulching , respectivamente.Palavras-chave -Coentro. Agricultura orgânica. Amendoim forrageiro. Palhada-utilização na agricultura.Abstract -The objective of this work was to evaluate the agronomic behavior of the cilantro in organic no-tillage system under alive and dead mulching and fertilized with doses of compost. The experimental design was randomized blocks, in a split-plot arrangement with four replications. The plot corresponded to the planting system (no-tillage with live mulching of Arachis pintoi, with live mulching of native weed, with mulching of straw and conventional tillage). In each plot the splitplot were represented by the doses of organic compost 10; 20 e 30 t ha -1 of dry compost. The no-tillage system with straw and conventional tillage showed the best results in all variables in the plant compared with no-tillage systems with live mulching of peanut crop and native weed. Cilantro answered linearly to fertilization, with yields of 4,554 t ha -1 to 6,542 t ha -1 when fertilized with 10 to 30 t ha -1 , respectively.

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Section: Resultsunclassified

Cultivo orgânico de coentro em plantio direto utilizando cobertura viva e morta adubado com composto

Tavella¹,

Galvão²,

Ferreira³

et al. 2010

Rev. Ciênc. Agron.

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“…C is mainly derived from soil organic matter, which can stabilize soil structure against erosion and enhance soil nutrient availability (Wang et al, 2008). The C, N and P contents in the soil at anthesis were different among N treatments, which might caused by the different N fertilization and the absorption ability of wheat under the different N treatments.…”

Section: Discussionmentioning

confidence: 99%

Influence of Nitrogen Fertilization on Wheat, and Soil Carbon, Nitrogen and Phosphorus Stoichiometry Characteristics

Zhong¹,

Yan²,

Xu³

et al. 2015

IJAB

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Nitrogen fertilizer is the most commonly fertilizer for increasing grain yield of wheat, but its effects on wheat carbon (C), nitrogen (N) and phosphorus (P) availability are not clear yet. This field experiment was conducted to evaluate the C, N and P stoichiometry characteristics of winter wheat and soil and their relationship during the anthesis and harvest stages under nitrogen fertilization (0, 180, 360 kg ha -1 ) in Northwest China. We found that N fertilization could increase N contents, C: P and N: P ratios and decrease P contents, C: N ratio in wheat. During anthesis, the highest N and P contents were found in the flag leaf and culm, respectively and at harvest, N and P contents were higher in the grain. N and P contents in all tissues of wheat were related, and more importantly, a significant relationship with the soil N and P contents was found, these results could help us understand the nutritional balance regulation in wheat under nitrogen fertilization.

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“…However, a few studies have shown that conservation tillage enhances soil carbon sequestration, but these reports have described changes in microbial biomass and diversity in northern China that account for approximately 56 % of the Chinese land area, only using indirect techniques (Chen et al 2009;Wang et al 2008). These results do not clearly and accurately demonstrate how conservation tillage alters the soil microbial community.…”

Section: Introductionmentioning

confidence: 99%

Conservation tillage increases soil bacterial diversity in the dryland of northern China

Wang

Lü

Chen

et al. 2016

Agron. Sustain. Dev.

118

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Agricultural practices change soil's physical and chemical properties, therefore modifying soil microbial communities. Conservation tillage is widely used to improve the soil texture and nutrient status in the dryland regions of northern China. However, little is known about the influence of soil properties on microbes, in particular on the effect of conservation tillage on soil bacterial communities. Here, we studied the effect of a 5-year tillage treatment on soil properties and soil bacterial communities in the dryland regions of northern China using a high-throughput sequencing technology and quantitative PCR of 16S rRNA genes. We compared the changes in soil bacterial diversity, and composition was measured for conservation tillage, including zero plow or chisel plow, and for conventional tillage using plow. Our results show that conservation tillage increased the Simpson index by 378 % and exhibited significantly dissimilar polygenetic diversity, with r of 1, and taxonomic diversity, of r higher than 0.49, compared to conventional tillage. This finding demonstrates that conservation tillage modifies soil bacterial diversity. Chisel plow and zero tillage increase the abundance of the genus Bacillus, including 85 % of the phylum Firmicutes, and of Rhizobiales belonging to the Alphaproteobacteria. Overall conservation tillage increased the abundance of profitable functional bacteria species.

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Soil chemical properties and microbial biomass after 16 years of no-tillage farming on the Loess Plateau, China

Cited by 107 publications

References 28 publications

Cultivo orgânico de coentro em plantio direto utilizando cobertura viva e morta adubado com composto

Cultivo orgânico de coentro em plantio direto utilizando cobertura viva e morta adubado com composto

Influence of Nitrogen Fertilization on Wheat, and Soil Carbon, Nitrogen and Phosphorus Stoichiometry Characteristics

Conservation tillage increases soil bacterial diversity in the dryland of northern China

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