Short-term effects of biochar and salinity on soil greenhouse gas emissions from a semi-arid Australian soil after re-wetting

Maucieri, Carmelo; Zhang, Y.; McDaniel, Marshall D.; Borin, Maurizio; Adams, Mark A.

doi:10.1016/j.geoderma.2017.07.028

Cited by 84 publications

(65 citation statements)

References 91 publications

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“…Salinity is one of the most important factors affecting soil respiration in saline-alkali soils, and our study showed that soil respiration decreased with increasing salinity. The negative impact of salinity on soil respiration was in agreement with previous studies [34,[40][41]. Salinity/alkalinity played a more important role in regulating soil respiration through its effects on the microorganisms, including microbial biomass, population, community structure and activity [32,34].…”

Section: Discussionsupporting

confidence: 91%

Soil Respiration from Different Halophytic Plants in Coastal Saline-Alkali Soils

Li¹,

Liu²

2020

Pol. J. Environ. Stud.

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Soil salinity is a crucial constraint in the potential utilization of land resources in the coastal regions of northern China [1]. Most of the lands within these areas are covered with salinized soil and are accompanied by shallow underground water [2]. Excess salinity and alkalinity plagued seed germination and plant growth, and led to environmental degradation [3]. In order to improve these conditions, local governments have launched costal ecological restoration projects, including planting halophytes, to recover degraded vegetation and reduce soil salinization. Halophytic plants can grow well and produce high biomass in saline environments

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Section: Discussionsupporting

confidence: 91%

Soil Respiration from Different Halophytic Plants in Coastal Saline-Alkali Soils

Li¹,

Liu²

2020

Pol. J. Environ. Stud.

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“…Our results are consistent with previous studies, which indicate that irrigation with brackish water had adverse effects on soil properties (Tables 3 and 4) [20,37,38]. These results are attributed to irrigation with high-salinity brackish water changing the soil osmotic potential, making it difficult for plants to absorb water and slowing transpiration [3].…”

Section: Soil Propertiessupporting

confidence: 92%

“…Judging from the existing research, salinity has been found to both significantly stimulate [12,[18][19][20] and inhibit soil N 2 O emissions [21][22][23], or produced no significant effect [24][25][26]. For example, Maucieri et al indicated that irrigation water salinity remarkably promoted N 2 O emission in their incubation experiment in Australia [20]. Kontopoulou et al reported that irrigation water salinity did not affect the emissions of N 2 O in Greek soybean fields [24].…”

Section: Introductionmentioning

confidence: 99%

Effects of Irrigation Water Salinity on Soil Properties, N2O Emission and Yield of Spring Maize under Mulched Drip Irrigation

Wei

Yang

et al. 2019

Water

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Brackish water has been widely used to irrigate crops to compensate for insufficient freshwater water supply for agricultural use. The goal of this research was to determine an efficient brackish water use method to increase irrigation efficiency and reduce N2O emission. To this end, we conducted a field experiment with four salinity levels of irrigation water (1.1, 2.0, 3.5, and 5.0 g·L−1 with drip irrigation) at Hetao Irrigation District (Inner Mongolia, China) in 2017 and 2018. The results show that irrigation with 3.5–5.0 g·L−1 water salinity increased the soil salinity compared with irrigation using 1.1–2.0 g·L−1 water salinity. The soil water content with 5.0 g·L−1 brackish water irrigation was significantly higher than with 1.1–3.5 g·L−1 water salinity due to the effect of salinity on crop water uptake. The overall soil pH increased with the increase in irrigation water salinity. Saturated soil hydraulic conductivity decreased with the increase in irrigation water salinity. These results indicate that brackish water irrigation aggravates the degree of soil salinization and alkalization. The soil N2O cumulative flux resulting from irrigation with 5.0 g·L−1 water salinity was 51.18–82.86% higher than that resulting from 1.1–3.5 g L−1 water salinity in 2017, and was 32.38–44.79% higher than that resulting from 1.1–2.0 g·L−1 in 2018. Irrigation with brackish water reduced maize yield, and the reduction in yield in 2018 was greater than that in 2017, but irrigation with 2.0 g·L−1 brackish water did not significantly reduce maize yield in 2017. These results suggest that reducing the salinity of irrigation water may effectively reduce soil N2O emission, alleviate the degree of soil salinization, and increase crop yield.

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“…Zhang et al [35] reported the values of the productivity coefficient at 17.3 kg N·kg −1 under conventional fertilization, while the optimization of fertilization associated with the addition of biochar resulted in an increase in this parameter to 29.19 kg N·kg −1 . Biochar introduced with mineral fertilizers gives them the characteristic of slow-release fertilizers [36]. The high value of the coefficient does not necessarily prove high production efficiency.…”

Section: Resultsmentioning

confidence: 99%

Assessment of the Efficiency of Nitrogen Slow-Release Fertilizers in Integrated Production of Carrot Depending on Fertilization Strategy

et al. 2020

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Optimization of plant nutrition is a very important part of primary production quality systems. Crop fertilization is the most important agrotechnical measure because it determines the amount and quality of the yield. Moreover, excess fertilization intensifies the eutrophication processes and the greenhouse effect. The study aimed to assess the suitability of slow-release fertilizers in cultivation of carrot subspecies Daucus carota L. ssp. sativus in the integrated production system. The objective was realized on the basis of a strict field experiment set up on a clay loam soil with low nutrient content. The dose of fertilizer was the experimental factor. The fertilizers were applied during the formation of the ridges. Traditional fertilizers (ammonium phosphate, potassium salt, ammonium nitrate, and a multi-component fertilizer Polifoska 6), as well as a multi-component fertilizer with slow release of nutrients, NPK Mg (18-12-24-4), were used. In individual variants of the experiment, different fertilization strategies were applied: integrated production fertilization, traditional fertilization, and fertilization based on the use of slow-release fertilizers. The control treatment comprised of unfertilized plants. The efficiency of nitrogen fertilization was evaluated based on agronomic efficiency, partial factor productivity, physiological efficiency, and removal efficiency. Fertilization strategy significantly impacted the quantity of obtained yield. In the control sample, prior to mineral fertilization, the crop yield was 33.53 Mg·ha −1 . The largest yield was 82.30 Mg·ha −1 .The largest yields were obtained from plants fertilized with a combination of slow-release fertilizers, with nitrogen introduced in the form of ammonium phosphate, and through conventional fertilization. The highest productivity and environmental efficiency were obtained in treatments with fertilization according to the principles of integrated production and with slow-release fertilizers. In terms of environmental efficiency, the best results were obtained through nitrogen fertilization using 400 kg of slow-release fertilizers. The use of slow-release fertilizers in carrot cultivation can significantly improve the efficiency of fertilization, both in terms of production and environmental protection.

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Short-term effects of biochar and salinity on soil greenhouse gas emissions from a semi-arid Australian soil after re-wetting

Cited by 84 publications

References 91 publications

Soil Respiration from Different Halophytic Plants in Coastal Saline-Alkali Soils

Soil Respiration from Different Halophytic Plants in Coastal Saline-Alkali Soils

Effects of Irrigation Water Salinity on Soil Properties, N2O Emission and Yield of Spring Maize under Mulched Drip Irrigation

Assessment of the Efficiency of Nitrogen Slow-Release Fertilizers in Integrated Production of Carrot Depending on Fertilization Strategy

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