Influence of nitrogen application on wheat crop performance, soil properties, greenhouse gas emissions and carbon footprint in central Bhutan

Bajgai, Yadunath; Yeshey, Yeshey; Mastro, Giuseppe De; Ghimiray, Mahesh; Chhogyel, Ngawang; Tshewang, Sangay; Ali, Salem Alhajj

doi:10.1016/j.envdev.2019.100469

Cited by 6 publications

(4 citation statements)

References 46 publications

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“…The superior performance of CRF + Nitro over Nitro can be attributed to lower GHG emissions occurring both during the production and application stages of the fertilisers. As demonstrated in previous studies [7,9,61], an increase in greenhouse gas (GHG) emissions due to the implementation of a specific management practice does not necessarily equate to a larger carbon footprint. This depends on whether the cropping practices result in greater grain yields.…”

Section: The Environmental Impactsmentioning

confidence: 96%

“…CF was estimated using the Cool Farm Tool (CFT) v2.5 (https://coolfarmtool.org/ (accessed on 20 September 2023)) [58]. The CFT serves as a GHG calculator designed for product-level calculations, specifically for determining emissions associated with individual products produced on-farm, such as potatoes [59], wheat [60,61], rice [62,63], maize [64], and cacao [65]. Total carbon emissions for crops encompass various factors [66], including:…”

Section: Carbon Footprint (Cf) and Greenhouse Gas Emissions (Ghg) Cal...mentioning

confidence: 99%

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Optimizing Sustainability in Malting Barley: A Practical Approach to Nitrogen Management for Enhanced Environmental, Agronomic, and Economic Benefits

Vahamidis,

Stefopoulou,

Kotoulas

2023

Agriculture

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Nitrogen (N) fertilisers used in barley production serve as the primary contributors to total greenhouse gas (GHG) emissions. Consequently, to lower the carbon footprint (CF) and GHG emissions, it is imperative to either reduce N fertiliser rates or enhance grain yield and improve nitrogen use efficiency (NUE). To address this challenge, we combined two strategies related to N: (1) a 34% reduction in the total N rate compared to the control (total N rate 108–110 kg N ha−1), and (2) testing two types of N fertilisers for topdressing against the control (common sulfur urea). These types included (a) a mixture comprising controlled-release fertiliser (CRF) combined with ammonium sulfate nitrate fertiliser in a 40:60 ratio (CRF + Nitro) and (b) ammonium sulfate nitrate (Nitro). Experiments were conducted in two distinct areas of Greece specialising in cereal production, aiming to unveil the effects of these strategies on all sustainability aspects of malting barley production. The results showed that although a 34% reduction in N rate did not result in yield penalties or a decrease in grain size, it did have a negative impact on grain protein content (GPC). CRF + Nitro not only reduced CF by approximately 30% compared to the control but also increased N agronomic efficiency by 51.5% and net profit by 7.1%. Additionally, it was demonstrated that the maximum achievable reduction in total GHG emissions and CF, by excluding N fertilisation from the crop system, ranged from 68.5% to 74.3% for GHG emissions and 53.8% to 67.1% for CF.

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Section: The Environmental Impactsmentioning

confidence: 96%

Section: Carbon Footprint (Cf) and Greenhouse Gas Emissions (Ghg) Cal...mentioning

confidence: 99%

Optimizing Sustainability in Malting Barley: A Practical Approach to Nitrogen Management for Enhanced Environmental, Agronomic, and Economic Benefits

Vahamidis,

Stefopoulou,

Kotoulas

2023

Agriculture

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“…In rain-fed crops, fertilizer, crop grain yield, and soil carbon sequestration are critical factors affecting the crop carbon footprint [5][6][7]. Fertilizer production and use are the most important emission source of GHG emissions and major contributors to the carbon footprint, especially in wheat growing [8]. Some farming practices, including rational crop rotation, conservation tillage, residual retention, and rational fertilization have capabilities of effectively reducing the carbon footprint by reducing nitrogen fertilizer input and improving soil carbon sequestration and crop yield [4,5,7,9,10].…”

Section: Introductionmentioning

confidence: 99%

Influence of Crop Residue Management and Soil Tillage Method on Reducing the Carbon Footprint of Winter Wheat Production in the Salt-Affected Arable Land in the North China Plain

Zhu

et al. 2023

Agronomy

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Salt-affected arable land is distributed widely in China, especially in the North China Plain. Crop residue management under appropriate tillage is critical to improving salt-affected soil organic carbon and reducing the carbon footprint. This study conducted four-year field experiments including two treatments (residue incorporated into soil with plough tillage (CT+); residue mulching with no-till (NT+)) in two sites (non-saline soil and salt-affected soil); the carbon footprint of wheat production was analyzed by life cycle assessment. The results showed that the carbon footprint of wheat production in the salt-affected soil was significantly larger than that in the non-saline soil, because the salt-affected soil exhibited higher N2O emission than the non-saline soil. CT+ has lower carbon footprint than the NT+, mainly due to the lower N2O emission and higher carbon sequestration in the CT+ compared to NT+. As for the salt-affected soil, the largest contributor of the carbon footprint per unit area was soil N2O emission, with a relative contribution of 40%; the largest contributor of the carbon footprint per unit yield was carbon sequestration, with a relative importance of 47–50%. Our results indicated that wheat production in salt-affected land has a high carbon footprint, while it can be decreased by incorporating crop residue into the soil under the plough tillage.

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“…Rice cultivation stimulates greenhouse gas (GHG) emissions from the soil into the atmosphere due to crop management practices such as irrigation water management, crop variety selection and fertilizer management, which in turn influences the biogeochemical processes of carbon and nitrogen in the soil (Islam et al, 2020). Methane is an end product of organic matter decomposition under anaerobic soil conditions (Linquist et al, 2012).Methane is produced by methanogens during organic matter decomposition, under an environment where the oxygen (O 2 ) and sulfate (SO4 2− ) are scarce and nitrous oxide is produced microbiologically during the an aerobic conditions of paddy soils (Bajgai et al, 2019). Large proportion of CH 4 released from rice fields occurs through different ways such as aerenchyma tissues of rice plants, this transport mechanism contribute for about 90% of emissions, compared to 8.2% of emissions from ebullition and diffusion through the floodwater, respectively (Smartt et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Greenhouse gas emissions in irrigated paddy rice as influenced by crop management practices and nitrogen fertilization rates in eastern Tanzania

Mboyerwa

Kibret

Mtakwa

et al. 2022

Front. Sustain. Food Syst.

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In rice production greenhouse gas emission (GHG) reduction is an important task for many countries, Tanzania included. Of global agricultural GHG emitted from rice fields, about 30 and 11% are represented by CH4 and N2O, respectively. For successful climate smart rice cultivation, rice management practices, including nitrogen fertilization are two key crucial components that need evaluation. The objective of this study was to evaluate the crop management practices and N fertilization on yield and greenhouse gases emission in paddy rice production, Experiments were designed in split-plot randomized complete block and replicated three times. Two rice management practices namely conventional practice (CP) and system of rice intensification (SRI) and six rates of nitrogen fertilizer (absolute control, 0, 60, 90,120 and 150 kg N ha−1) were applied in two consecutive seasons. The Source-selective and Emission-adjusted GHG CalculaTOR for Cropland (SECTOR) was used to calculate the GHG emission. Methane emission was in the range of 88.7–220.6 kg ha−1season−1, where higher emission was recorded in CP treatments (ABC, CP 0 and CP 120N) compared to SRI treatments. SRI reduced methane and carbon dioxide emission by 59.8% and 20.1% over CP, respectively. Seasonal nitrous oxide emissions was in the range of no detected amount to 0.0002 kgN2O ha−1 where SRI treatments recorded up to 0.0002 kgN2O ha−1 emissions while in CP treatment no amount of N2O was detected. The interaction of system of rice intensification and 90 kg N ha−1 (SRI90N) treatment recorded higher grains yield (8.1, 7.7 t ha−1) with low seasonal global warming potential (GWP) (3,478 and 3,517 kg CO2e ha−1) and low greenhouse gas intensity (0.42, 0.45 kg CO2e per kg paddy) compared to other treatments in wet and dry season, respectively. Therefore, SRI with 90 kg N was the treatment with mitigation potential and reduced GWP without compromising rice yield.

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Influence of nitrogen application on wheat crop performance, soil properties, greenhouse gas emissions and carbon footprint in central Bhutan

Cited by 6 publications

References 46 publications

Optimizing Sustainability in Malting Barley: A Practical Approach to Nitrogen Management for Enhanced Environmental, Agronomic, and Economic Benefits

Optimizing Sustainability in Malting Barley: A Practical Approach to Nitrogen Management for Enhanced Environmental, Agronomic, and Economic Benefits

Influence of Crop Residue Management and Soil Tillage Method on Reducing the Carbon Footprint of Winter Wheat Production in the Salt-Affected Arable Land in the North China Plain

Greenhouse gas emissions in irrigated paddy rice as influenced by crop management practices and nitrogen fertilization rates in eastern Tanzania

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