Influence of root zone nitrogen management and a summer catch crop on cucumber yield and soil mineral nitrogen dynamics in intensive production systems

Guo, Ruiying; Li, Xin; Christie, Peter; Chen, Qing; Jiang, Rongfeng; Zhang, Fusuo

doi:10.1007/s11104-008-9679-0

Cited by 65 publications

(70 citation statements)

References 39 publications

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“…During the three years, the relative frequencies of fungal diversity showed variable responses before and after rotation practices; mainly, the diversity of fungi increased after garlic planting, and it decreased after cucumber planting each year. However, no significant differences for the fungal α-diversity indices were found between the mono-cropping system (CK) and the cucumber/garlic (treatments T 5 , T 10 , T 15 , T 20 , and T 25 ) cropping system during the three year's experiment (Figure 4).…”

Section: Effects Of a Three-year Green Garlic/cucumber Crop Rotation mentioning

confidence: 95%

“…The garlic rotation was considered a sustainable rotation versus cucumber continuous mono-cropping (termed 'conventional' cropping system, as this was common commercial practice in the region). The sequence of the different numbers of garlic bulbs according to treatment was as follows: 5, 10, 15, 20, and 25 garlic bulbs (cucumber/green garlic ratios of 2:5, 2:10, 2:15, 2:20, and 2:25, presented as T 5 , T 10 , T 15 , T 20 , and T 25 , respectively). All the pots were organized in a randomized block design with five replications (one pot per replication), and each plastic pot (38 cm diameter × 33 cm height) received fifteen kilograms of soil.…”

Section: Site Description and Experimental Designmentioning

confidence: 99%

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Dynamics of a Soil Fungal Community in a Three-Year Green Garlic/Cucumber Crop Rotation System in Northwest China

2018

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Abstract:A decreased soil biological environment in terms of an unstable microbial population and diversity index is primarily caused by intensive continuous cropping systems. In this study, a crop rotation system was established to evaluate the soil fungal diversity using a pyrosequencing-based analysis during three successive growing seasons (2013, 2014, and 2015) under a field pot investigation. We found that overall green garlic/cucumber rotational effects increased cucumber productivity under these growing practices. Analysis of fungal communities in rhizosphere soils by high-throughput pyrosequencing showed that the estimated treatment effects were more obvious during the three-year trials, and OTU richness was much higher than the control in cucumber-planted soils. The relative frequencies of fungal diversity showed variable responses before and after rotation practices, and mainly α-diversity of fungi increased in garlic planted soil and again decreased after cucumber planted soil in each year. The phylogenetic classification illustrated that the fungal communities were dominated by the taxa Ascomycota, Basidiomycota, Chytridiomycota, Glomeromycota, and Zygomycota across all samples. Particularly, the relative abundance of the taxon Ascomycota was largely and predominantly enriched with the increasing number of garlic bulbs during the three years. Moreover, the majority of abundant taxa positively correlated with available P and K contents, while being highly negatively correlated with soil pH, EC, and SOC. These results indicate that garlic-cucumber-based crop rotations induce fungal richness and diversity and promote the sustainability of agricultural ecosystems, thus enhancing crop growth and production.

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Section: Effects Of a Three-year Green Garlic/cucumber Crop Rotation mentioning

confidence: 95%

Section: Site Description and Experimental Designmentioning

confidence: 99%

Dynamics of a Soil Fungal Community in a Three-Year Green Garlic/Cucumber Crop Rotation System in Northwest China

2018

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“…Cover crops can be incorporated in winter just before soil freezes, which can recycle nutrients for succeeding crops. Guo et al (2008) reported that total N uptake by sweet corn at harvest was 187 kg N ha In both years soil N min at 0.3-0.9 m depth was reduced by sweet corn cropping with root growth and N uptake occurring in contrast to the fallow period. At the sweet corn harvest less N min was retained in the top 1.8 m of the soil profile under sweet corn cropping compared with the fallow period (Fig.…”

Section: Crop Management Strategies 231 Introducing Cover Cropsmentioning

confidence: 96%

Strategies for Managing Soil Nitrogen to Prevent Nitrate-N Leaching in Intensive Agriculture System

Liu¹,

Song²,

Jiang³

et al. 2012

Soil Health and Land Use Management

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“…When the N target value method based on soil testing and side-dressings in the rootzone, some nitrogen loss is still evident (Guo, et al, 2008a;He et al, 2007;Ren et al, 2010). Using the technique of rootzone N management, the N fertilizer input could be reduced by 53% in a four-season greenhouse cucumber experiment (Guo et al, 2008b). However, significant losses of nitrate-N in drainage water continue to occur under a furrow irrigation regime because of excessive nutrient supply from long-term over application of organic manures and chemical fertilizers to the greenhouse.…”

Section: Introductionmentioning

confidence: 99%

Organic matter fractions and N mineralization in vegetable‐cropped sandy soils

Jegajeevagan

Sleutel

Ameloot

et al. 2013

Soil Use and Management

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Soil organic nitrogen mineralization rates and possible predictors thereof were investigated for vegetable‐growing soils in Belgium. Soil organic matter (SOM) was fractionated into sand (> 53 μm) and silt+clay (< 53 μm) fractions. The latter fraction was further separated into 6%NaOCl‐oxidation labile (6%NaOCl‐ox) and resistant N and C and subsequently into 10%HF‐extractable (mineral bound) and resistant (recalcitrant) N and C. The N mineralization turnover rate (% of soil N/year) correlated with several of the investigated N or C fractions and stepwise linear regression confirmed that the 6%NaOCl‐ox N was the best predictor. However, the small R² (0.42) of the regression model suggests that soil parameters other than the soil fractions isolated here would be required to explain the significant residual variation in N mineralization rate. A next step could be to look for alternative SOM fractionations capable of isolating bioavailable N. However, it would appear that the observed relationships between N fractions and N mineralization may not be causal but indirect. The number of vegetable crops per rotation did not influence N mineralization, but it did influence 6%NaOCl‐ox N, probably as an effect of differences in crop residues returned and organic manure supply. However, the nature of this relation between management, SOM quality and N mineralization is not clear. Explanation of correlations between N mineralization and presumed bioavailable N fractions, like the 6%NaOCl‐ox N, requires further mechanistic elucidation of the N mineralization process.

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Influence of root zone nitrogen management and a summer catch crop on cucumber yield and soil mineral nitrogen dynamics in intensive production systems

Cited by 65 publications

References 39 publications

Dynamics of a Soil Fungal Community in a Three-Year Green Garlic/Cucumber Crop Rotation System in Northwest China

Dynamics of a Soil Fungal Community in a Three-Year Green Garlic/Cucumber Crop Rotation System in Northwest China

Strategies for Managing Soil Nitrogen to Prevent Nitrate-N Leaching in Intensive Agriculture System

Organic matter fractions and N mineralization in vegetable‐cropped sandy soils

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