Effect of wheat crop fertilization on nitrogen dynamics and balance in the Humid Pampas, Argentina

Abril, Adriana; Baleani, D.; Casado-Murillo, N.; Noe, Laura

doi:10.1016/j.agee.2006.07.005

Cited by 43 publications

(28 citation statements)

References 23 publications

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“…These factors include: i) NO 3 -N leaching, which represented a relatively small proportion of the fertilizer N input (14%) or the biomass N yield (13%), and ii) N leaching, which is largely influenced by the release of soluble N from the soil organic matter; e.g. Uhlen [21], Macdonald et al [42], and Abril et al [43] reported that the highest fraction of N lost by leaching originates from the soluble N in the soil organic matter.…”

Section: Discussionmentioning

confidence: 99%

Little Potential of Spring Wheat Genotypes as a Strategy to Reduce Nitrogen Leaching in Central Europe

et al. 2016

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Nitrogen (N) losses negatively impact groundwater quality. Spring wheat genotypes varying in N-fertilizer recovery were studied (by using lysimeters) for their potential to minimize NO 3 -N leaching during spring and summer, over a three-year period. Additionally, we examined to what extent root growth and NO 3 -N leaching explain the well-known difference found between apparent and isotopic N recovery. The genotypes were grown under low (2 g m´2) and high (27 g m´2) N fertilizer supply. On average, the apparent and isotopic recoveries of N fertilizer by wheat were 43% and 51%, respectively. The three genotypes varied in fertilizer N recovery but not in NO 3 -N leaching, which only accounted for 15% of the applied N fertilizer. The differences in N uptake, fertilizer N recovery and root growth among the genotypes were not associated with the leached NO 3 -N because root growth and N uptake were not well synchronized with NO 3 -N leaching. Already at stem elongation 70% to 98% of the season-long NO 3 -N leaching had already taken place. Thus, the ability to minimize in-season NO 3 -N leaching by using spring wheat genotypes with higher fertilizer N recovery was limited because maximum N leaching occurred in the early crop season.

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Section: Discussionmentioning

confidence: 99%

Little Potential of Spring Wheat Genotypes as a Strategy to Reduce Nitrogen Leaching in Central Europe

et al. 2016

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“…The only high yield obtained in the treatments with 8 Mg ha -1 of amendments (not combined with chemical fertilizers) would be indicating that the characteristics of slow N release persist in such amendments [47]. On the contrary, the application of chemical fertilizers favours nitrate loss through run off and leaching [4,45]. Thus, yields in treatments using chemical fertilizers are not different from control yields, although the former were treated with high N doses (700 kg ha -1 ) combined with a high amount of amendment (14 Mg ha -1 ).…”

Section: Effect Of the Application Of Amendments On Garlic Yieldmentioning

confidence: 99%

“…Likewise, the high chemical fertilizer doses applied with CL have favoured microbial growth and the consequent fast organic C consume and N release [4,44]. Thus, one of the objectives of amendment use is not met: gradual release of nitrates from organic N to improve synchronization with crop requirements [34,33,45].…”

Section: Nitrogen Availabilitymentioning

confidence: 99%

“…One of the critical problems induced by transformation of arid zones in irrigation areas is SOM conservation, since soils of irrigation areas are heavily tilled and fertilized [3]. It is widely accepted that tillage and fertilization largely contribute to SOM loss, with negative consequences on soil structure, nutrient reserves and microbial activity [4,5].…”

Section: Introductionmentioning

confidence: 99%

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Effects of Organic Amendment Application on Soil Quality and Garlic Yield in Central-Western Argentina

Filippini¹

2012

TOASJ

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Abstract:We analyzed during two garlic crop cycles, the effects of chicken manure and vermicompost on soil chemical and biological properties in an agricultural farm irrigated with municipal wastewater of central-western Argentina. Also we evaluate garlic yield and possible health risks as resulting from the organic amendments and the wastewater use. We found that: a) different doses and types of amendments did not have any significant effects on soil fertility; b) chicken manure and soil before planting, had E. coli and Salmonella spp.; and c) crop yields were quite similar in all treatments, only treatments with 8 Mg ha -1 of both amendments (chicken manure and vermicompost) without N fertilized, were significantly higher than control in both garlic assays. These results are probably the consequence of heavily tilled soils and poor quality of irrigation water with high abundance of enteric bacteria and labile organic matter content. We conclude that to obtain beneficial effects on soil fertility from organic amendment application, wastewater treatment systems must be improved and tillage practices must be reduced.

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“…It is a conventional agricultural practice in South China, but is less adopted in Northeast China. Many studies have evaluated the use efficiency, residual effect, and fate of chemical fertilizer N (Zhu and Chen, 2002;Abril et al, 2007;Ju et al, 2009;Zhang et al, 2011;Chuan et al, 2013), but the utilization and fate of green manure originated N has been very rarely studied. The ability of green manure to release N nutrient relies on its chemical composition (Chaves et al, 2006(Chaves et al, , 2008Tejada and Gonzalez, 2006;Matos et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Use efficiency and residual effect of 15N-labelled ryegrass green manure over a 9-year field micro-plot experiment

Chen

Shen

et al. 2013

J. Soil Sci. Plant Nutr.

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A 9-year field micro-plot experiment was conducted to investigate the use efficiency, residual effect, and fate of 15 N-labelled ryegrass green manure in soil-crop system, so as to offer useful information for reasonable application of green manures on meadow burozem. Results showed that high application rate (600g per plot) of 15 N-labelled ryegrass green manure resulted in reduction of percent recovery (PR) 15 N plant and PR 15N soil by 25.0% and 12.8%, respectively, and elevation of percent loss (PL) 15 N by 31.2%, as compared with low application rate. The 15 N utilization and loss could be divided into three phases, i.e., high uptake and fast loss in the first and second growth seasons, low uptake and slow loss in the following four growth seasons, and little change in the last three growth seasons. This suggested that the green manure N had a long residual effect but its loss was faster at early phase, and thus, rational application of green manure was of considerable importance to reduce its N loss while improve its N use efficiency.

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Effect of wheat crop fertilization on nitrogen dynamics and balance in the Humid Pampas, Argentina

Cited by 43 publications

References 23 publications

Little Potential of Spring Wheat Genotypes as a Strategy to Reduce Nitrogen Leaching in Central Europe

Little Potential of Spring Wheat Genotypes as a Strategy to Reduce Nitrogen Leaching in Central Europe

Effects of Organic Amendment Application on Soil Quality and Garlic Yield in Central-Western Argentina

Use efficiency and residual effect of 15N-labelled ryegrass green manure over a 9-year field micro-plot experiment

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