Effects of temperature and amendments on nitrogen mineralization in selected Australian soils

Thangarajan, Ramya; Bolan, Nanthi; Naidu, Ravi; Surapaneni, Aravind

doi:10.1007/s11356-013-2191-y

Cited by 40 publications

(28 citation statements)

References 50 publications

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“…The The effect of temperature on nitrification rate was greatest at 24 °C, moderate at 37 °C, and lowest at 18 °C (Thangarajan et al 2015). Xu et al (2014) suggested that rates of N mineralization and nitrification were insensitive to temperature at lower temperatures (0 °C and 5 °C) but increased at higher temperatures (15 °C and 25 °C).…”

Section: Discussionmentioning

confidence: 96%

Nitrogen mineralization simulation dynamic in tobacco soil

Tian

Qin

et al. 2018

J. Soil Sci. Plant Nutr.

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Laboratory and field culture experiments have been carried out at two sites which show that temperature and soil moisture significantly affected nitrogen mineralization in the soil in a tobacco field. Intermittent leaching under aerobic incubation conditions was adopted to develop dynamic simulation models of organic nitrogen mineralization under different temperature regimes (10, 15, 20, 25, 30, 35, 30, 25, and 20 °C) and soil gravimetric moisture content (0.1, 7%, 13%, 20%, 27%, 33%, 40%, 47%, and 53%). The results show that the highest N mineralization rate appeared at 35 °C and the lowest was 10 °C. Soil N mineralization rate, as affected by soil moisture, is a single peak curve with a peak at 40%. The interaction of temperature and moisture on soil N mineralization is significant. Based on the results of a field trial, the combined model given by governing equation:

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Section: Discussionmentioning

confidence: 96%

Nitrogen mineralization simulation dynamic in tobacco soil

Tian

Qin

et al. 2018

J. Soil Sci. Plant Nutr.

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“…These factors, which will largely determine the potential short-term yield benefit of an organic amendment, may include: the source of organic amendment and the rate and method of application (El-Haris et al, 1983;Bernal et al, 2009), chemical and biological properties of the organic amendment (Hartz and Giannini, 1998;Thangarajan et al, 2015), site-specific soil chemical, physical, and biological properties (Sørensen and Jensen, 1995;Hadas et al, 1996;Thangarajan et al, 2015), local climate and weather (Sims, 1986), and cultural practices (e.g., irrigation and tillage; El-Haris et al, 1983;Agehara and Warncke, 2005). Given that nutrient availability following organic amendment application is difficult to predict, short-term yield responses may vary considerably, especially among crop functional groups and species with different nutritional requirements (Antonious et al, 2012).…”

Section: Core Ideasmentioning

confidence: 99%

“…In contrast, woody, straw-based, and municipal yard waste amendments are typically characterized by a relatively high C/N ratio and lower organic and mineral N compared to animal manures and compost (Chae and Tabatabai, 1986;Hartz and Giannini, 1998;Thangarajan et al, 2015). Indeed, the majority of studies in this meta-analysis that included a plant-based soil amendment reported using straw residue or municipal yard waste compost, which may explain the modest first-season yield benefits compared to animal-manure amendments.…”

Section: Yield Response By Amendment Typementioning

confidence: 99%

First‐Season Crop Yield Response to Organic Soil Amendments: A Meta‐Analysis

et al. 2017

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Core Ideas Organic amendments are promoted as sustainable alternatives to synthetic fertilizer. Crop yield increased by an average of 43% in the first season after organic soil amendment. Yield benefit from organic amendments was greater in leafy crops than root crops. Poultry manure was commonly used and provided the greatest agronomic benefit. Yield benefit of organic amendment was lower in arid regions with poor soil quality. Organic soil amendments are increasingly promoted as a sustainable alternative to synthetic fertilizers and as a tool for building soil quality through improved chemical, physical, and biological properties. However, short‐term yield response to organic amendments is highly variable. A meta‐analysis of 53 studies was conducted to (i) develop a global estimate of first‐season crop yield response to organic amendments, and (ii) determine the effect of crop type, amendment characteristics, soil properties, cultural practices, and climate on the magnitude of this yield response. Yield response ratios were calculated (organic amendment yield compared to a non‐fertilized control) and differences among groups were determined using 95% bootstrap confidence intervals (CI). Across all studies, crop yield increased 43±7% (95% CI) in the first‐season after an organic amendment. Yield response was greatest for leafy crops (71±26% increase) and lowest for root/tuber/bulb crops (29±10% increase). Poultry manure/compost was the most commonly used amendment and provided a yield increase of 76±21%. In contrast, plant‐based amendments increased yield by only 27±9%. Amendment application rate alone was not an effective predictor of yield response, and there were not enough studies available to explore the possible interaction between amendment type and rate. Yield benefits of organic amendments were muted in soils with high organic matter and in arid climates. These results help identify options for maximizing the agronomic value of organic amendments, and suggest research is needed to improve agronomic efficiency of amendments in arid regions with poor soil quality.

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“…The sensitivity of soil organic matter mineralization to temperature is affected by the type and availability of the substrate (von Lützow and Kögel-Knabner, 2009). Soil temperature can impact the quantity of nitrogen that is present in the soil for plant use and determines the fate of this nitrogen (Thangarajan et al, 2015). Temperature is a determinant of how biological processes that are involved in the transformation of nitrogen in soils function.…”

Section: Temperaturementioning

confidence: 99%

“…Thangarajan et al (2015) studied the influence of temperature on the transformation of nitrogen between organic and inorganic nitrogen sources. They reported that 24 °C is the optimum temperature in all the soils studied except one.…”

Section: Temperaturementioning

confidence: 99%