Film mulching, residue retention and N fertilization affect ammonia volatilization through soil labile N and C pools

Nitrogen (N) is an essential plant nutrient, therefore, N-deficient soils affect plant growth and development. The excessive and unwise application of N fertilizers result in nutrient losses and lower nutrient use efficiency that leads to the low crop productivity. Ammonia volatilization causes a major loss after N fertilization that causes environmental pollution. This experiment was conducted to evaluate the effectiveness of coating and uncoating N fertilizer in enhancing yield and nutrient-use efficiency with reduced ammonia emissions. The recommended rate of nitrogen and phosphorus, urea and di-ammonium phosphate (DAP) fertilizers were coated manually with 1% polymer solution. DAP (coated/uncoated) and potassium were applied at the time of sowing as subsurface application. While urea (coated/uncoated) was applied as surface and subsurface application. Results showed that nutrient use efficiencies of wheat were found to be maximum with the subsurface application of coated N fertilizer which increased nutrient-use efficiency by 44.57 (N), 44.56 (P) and 44.53% (K) higher than the surface application of uncoated N fertilizer. Ammonia emissions were found the lowest with subsurface-applied coated N fertilizer. Thus, coated fertilizer applied via subsurface was found the best technique to overcome the ammonia volatilization with an improvement in the yield and nutrient-use efficiency of wheat.

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Data on spatio-temporal representation of mineral N fertilization and manure N application as well as ammonia volatilization in French regions for the crop year 2005/06

Data in Brief ◽

10.1016/j.dib.2018.09.119 ◽

2018 ◽

Vol 21 ◽

pp. 1119-1124

Author(s):

Sophie Génermont ◽

Maharavo Marie Julie Ramanantenasoa ◽

Karine Dufosse ◽

Olivier Maury ◽

Catherine Mignolet ◽

...

Keyword(s):

Ammonia Volatilization ◽

N Fertilization ◽

Mineral N ◽

N Application ◽

Temporal Representation ◽

Spatio Temporal

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Soil microbial communities under film mulching and N fertilization in semiarid farmland

Nutrient Cycling in Agroecosystems ◽

10.1007/s10705-019-09998-9 ◽

2019 ◽

Vol 114 (2) ◽

pp. 157-170 ◽

Cited By ~ 1

Author(s):

Shasha Luo ◽

Shaojie Wang ◽

Pengwei Yao ◽

Dan Guo ◽

Xiujun Li ◽

...

Keyword(s):

Microbial Communities ◽

Soil Microbial Communities ◽

N Fertilization ◽

Soil Microbial ◽

Film Mulching

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Soil management effects on organic carbon in isolated fractions of a Gray Luvisol

Canadian Journal of Soil Science ◽

10.4141/s05-037 ◽

2006 ◽

Vol 86 (1) ◽

pp. 141-151 ◽

Cited By ~ 12

Author(s):

A. F. Plante ◽

C. E. Stewart ◽

R. T. Conant ◽

K. Paustian ◽

J. Six

Keyword(s):

Organic Matter ◽

Crop Production ◽

N Fertilization ◽

Residue Management ◽

Soil Organic C ◽

Organic C ◽

Straw Management ◽

Soil C ◽

C Pools

Agricultural management affects soil organic matter, which is important for sustainable crop production and as a greenhouse gas sink. Our objective was to determine how tillage, residue management and N fertilization affect organic C in unprotected, and physically, chemically and biochemically protected soil C pools. Samples from Breton, Alberta were fractionated and analysed for organic C content. As in previous reports, N fertilization had a positive effect, tillage had a minimal effect, and straw management had no effect on whole-soil organic C. Tillage and straw management did not alter organic C concentrations in the isolated C pools, while N fertilization increased C concentrations in all pools. Compared with a woodlot soil, the cultivated plots had lower total organic C, and the C was redistributed among isolated pools. The free light fraction and coarse particulate organic matter responded positively to C inputs, suggesting that much of the accumulated organic C occurred in an unprotected pool. The easily dispersed silt-sized fraction was the mineral-associated pool most responsive to changes in C inputs, whereas the microaggregate-derived silt-sized fraction best preserved C upon cultivation. These findings suggest that the silt-sized fraction is important for the long-term stabilization of organic matter through both physical occlusion in microaggregates and chemical protection by mineral association. Key words: Soil organic C, tillage, residue management, N fertilization, silt, clay

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Nitrogen fertilization impact on soil carbon pools and their stratification and lability in subtropical wheat-mungbean-rice agroecosystems

PLoS ONE ◽

10.1371/journal.pone.0256397 ◽

2021 ◽

Vol 16 (10) ◽

pp. e0256397

Author(s):

Rafeza Begum ◽

Mohammad Mofizur Rahman Jahangir ◽

M. Jahiruddin ◽

Md. Rafiqul Islam ◽

Md. Taiabur Rahman ◽

...

Keyword(s):

Soil Quality ◽

Crop Production ◽

Biological Activities ◽

Block Design ◽

N Fertilization ◽

Basal Respiration ◽

Organic C ◽

C Pools ◽

Labile C ◽

The Impact

Nitrogen (N) is the prime nutrient for crop production and carbon-based functions associated with soil quality. The objective of our study (2012 to 2019) was to evaluate the impact of variable rates of N fertilization on soil organic carbon (C) pools and their stocks, stratification, and lability in subtropical wheat (Triticum aestivum)—mungbean (Vigna radiata)—rice (Oryza sativa L) agroecosystems. The field experiment was conducted in a randomized complete block design (RCB) with N fertilization at 60, 80, 100, 120, and 140% of the recommended rates of wheat (100 kg/ha), mungbean (20 kg/ha), and rice (80 kg/ha), respectively. Composite soils were collected at 0–15 and 15–30 cm depths from each replicated plot and analyzed for microbial biomass (MBC), basal respiration (BR), total organic C (TOC), particulate organic C (POC), permanganate oxidizable C (POXC), carbon lability indices, and stratification. N fertilization (120 and 140%) significantly increased the POC at both depths; however, the effect was more pronounced in the surface layer. Moreover, N fertilization (at 120% and 140%) significantly increased the TOC and labile C pools when compared to the control (100%) and the lower rates (60 and 80%). N fertilization significantly increased MBC, C pool (CPI), lability (CLI), and management indices (CMI), indicating improved and efficient soil biological activities in such systems. The MBC and POC stocks were significantly higher with higher rates of N fertilization (120% and 140%) than the control. Likewise, higher rates of N fertilization significantly increased the stocks of labile C pools. Equally, the stratification values for POC, MBC, and POXC show evidence of improved soil quality because of optimum N fertilization (120–140%) to maintain and/or improve soil quality under rice-based systems in subtropical climates.

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Ammonia volatilization and nitrous oxide emissions during soil preparation and N fertilization of elephant grass (Pennisetum purpureum Schum.)

Soil Biology and Biochemistry ◽

10.1016/j.soilbio.2013.04.007 ◽

2013 ◽

Vol 64 ◽

pp. 80-88 ◽

Cited By ~ 29

Author(s):

Rafael F. de Morais ◽

Robert M. Boddey ◽

Segundo Urquiaga ◽

Claudia P. Jantalia ◽

Bruno J.R. Alves

Keyword(s):

Nitrous Oxide ◽

Ammonia Volatilization ◽

N Fertilization ◽

Pennisetum Purpureum ◽

Nitrous Oxide Emissions ◽

Elephant Grass ◽

Soil Preparation ◽

Pennisetum Purpureum Schum

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MANAGEMENT OF IRRIGATION AND NITROGEN FERTILIZERS TO REDUCE AMMONIA VOLATILIZATION

Revista Brasileira de Ciência do Solo ◽

10.1590/01000683rbcs20150132 ◽

2015 ◽

Vol 39 (6) ◽

pp. 1737-1743 ◽

Cited By ~ 7

Author(s):

Fernando Viero ◽

Cimélio Bayer ◽

Renan Costa Beber Vieira ◽

Eduardo Carniel

Keyword(s):

Ammonia Volatilization ◽

Slow Release ◽

Block Design ◽

Irrigation Management ◽

N Fertilization ◽

Nitrogen Fertilizers ◽

Urease Inhibitor ◽

Nh3 Volatilization ◽

Slow Release Fertilizer ◽

N Sources

ABSTRACT Nitrogen losses by ammonia (NH3) volatilization can be reduced by appropriate irrigation management or by alternative N sources, replacing urea. The objective of this study was to evaluate the efficiency of irrigation management and N source combinations in decreasing NH3 volatilization from an Argissolo Vermelho Distrófico típico cultivated for 28 years with black oat (Avena strigosa) and maize (Zea mays), under no-tillage in the region of Depressão Central, Rio Grande do Sul, Brazil. The experiment was arranged in a randomized block design with split plots with three replications, where the main plots consisted of irrigation systems: no irrigation; irrigation immediately before and irrigation immediately after fertilization. The subplots were treated with different N sources: urea, urea with urease inhibitor and slow-release fertilizer, at an N rate of 180 kg ha-1, broadcast over maize, plus a control treatment without N fertilization. Ammonia volatilization was assessed using semi-open static collectors for 1, 2, 4, 6, and 10 days after N fertilization. In general, more than 90 % of total NH3-N losses occurred until three days after N fertilization, with peaks up to 15.4 kg ha-1 d-1. The irrigation was efficient to reduce NH3 losses only when applied after N fertilization. However, reductions varied according to the N fertilizer, and were higher for urea (67 %) and slightly lower for urea with urease inhibitor (50 %) and slow-release fertilizer (40 %), compared with the mean of the treatments without irrigation and irrigation before fertilization. The use of urea with urease inhibitor instead of urea was only promising under volatilization-favorable conditions (no irrigation or irrigation before N fertilization). Compared to urea, slow-release fertilizer did not reduce ammonia volatilization in any of the rainfed or irrigated treatments.

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