A new framework for simulating C decomposition and emissions from land applied biosolids and manures using the denitrification and decomposition model

The Science of The Total Environment, Journal Year: 2025, Volume and Issue: 969, P. 178913 - 178913

Published: Feb. 25, 2025

There is a need for modeling tools capable of estimating CO2 emissions from land application biosolids and manure. The Denitrification Decomposition model (DNDC) was improved this capacity by adding separate manure C pool to disaggregate decomposition the soil organic matter pools. effect temperature on also improved. Data collected two climatically distinct sites in Montreal (Quebec) Truro (Nova Scotia) with corn were used test DNDC simulating yield, moisture, fluxes amended (mesophilic anaerobically digested, composted, or alkaline-stabilized). A third site Harrow (Ontario) verify solid cattle applied corn-soybean field. Crop yields well simulated (rRMSE 4.1-30.1 %) all sites. (0.78 ≤ d 0.93) outperformed default version (0.61 0.9) across Similarly, effectively both (d ≥ 0.88) moisture (0.53 0.91). addition an independent biosolids/manure resulted more accurate simulation seasonal alkalized composted biosolids. modified function alleviated over-prediction shortly after biosolid timing during growing season. enhanced will help simulate best management practices integrated crop-livestock-manure systems, reducing reliance nitrogen fertilizer.

Language: Английский

---

‘Pipes & Valves’: Managing crop production and environmental impact by mitigating ammonia, nitrous oxide, and nitrate losses

Field Crops Research, Journal Year: 2024, Volume and Issue: 307, P. 109250 - 109250

Published: Jan. 21, 2024

Canada has targeted a 30% reduction in N2O emissions from fertilizer by 2030 its commitments to reduce greenhouse gas emissions. To help achieve these commitments, 'Pipes & Valves' conceptual visualization of the DNDC model was combined with DeNitrification-DeComposition (DNDC) evaluate suite nutrient management and conservation practices. The objectives were meet targets as well other reactive-N species (N2O, NH3 NO3- leaching) provide systems approach while increasing corn yields. This accomplished by: 1) developing model; 2) evaluating full system 3-years volatilization, emission, inorganic N, crop yield N uptake data; 3) applying identify N-management strategies that mitigate N-loss improve compared simulated measured performance over 3 years for N- practices including pre-plant versus side-dress UAN injection either no inhibitors, urease inhibitor or dual nitrification inhibitor. A Pipe Valves developed used simulate 14 scenarios based on moldboard plow tillage tillage, type (urea vs. urea ammonium nitrate, UAN), (none, inhibitor, both), placement (broadcast injection), timing (at planting split application), rate (recommended 15% reduction). evaluated using field data had excellent yields, cumulative soil temperature water predictions fair standard metrics. Multiple and/or decreased losses 36–96% broadcast urea. treatment side-dressed injected reduced 37-40%. Although several one pathway ≥ 30%, only plus inhibitors under achieved multiple reductions 40%, 93% 62% N2O, reactive-N, respectively grain yields 7%. Combining modelling effective determining how 4R can be stacked worldwide without compromising

Language: Английский

---

Global Meta‐Analysis of Individual and Combined Nitrogen Inhibitors: Enhancing Plant Productivity and Reducing Environmental Losses

Global Change Biology, Journal Year: 2024, Volume and Issue: 30(12)

Published: Dec. 1, 2024

ABSTRACT Nitrogen (N) transformation inhibitors have been widely recognized as a promising strategy to enhance crop productivity and mitigate N losses. However, the effectiveness of individual or combined can vary significantly across different agroecosystems. Using meta‐analysis cost–benefit analysis (CBA), we synthesized findings from 41 peer‐reviewed studies (285 observations) globally evaluate efficacy urease (UIs), nitrification (NIs), (UINIs). We assessed their influence on soil inorganic transformations, greenhouse gas emissions, diverse climates, types, cropping systems, fertilization practices. Our results indicated that UINIs were most efficient, increasing yields by 5% mitigating gaseous emissions 51% compared UIs NIs alone. achieved these benefits enhancing ammonium (NH 4 + ) availability through regulating urea hydrolysis prolonging NH retention suppressing in soil. The CBA revealed overall economic application outweighed costs, resulting net monetary benefit $23.36 ha −1 , equivalent 6.4% increase revenue. Both meta‐regression random forest analyses suggested performance was strongly influenced factors such rate, organic matter content, pH. Notably, more substantial responses observed fine‐textured soils and/or crops exposed high rates. Acidic (pH < 6.5) exhibited largest effect sizes, with increased reduced 3 volatilization due specific inhibitory interactions. In conclusion, highlight beneficial impacts environmental conservation, achieving “win‐win” scenario addressing various N‐loss challenges while outcomes. Further exploration optimization interaction between climate, soil, plant, management systems use appropriate are crucial for maximizing positive impact global climate reaping corresponding benefits.

Language: Английский

---

The effect of nitrification inhibitor on the yield and quality of Triticum aestivum L. and Brassica napus L. – A long-term experiment

Field Crops Research, Journal Year: 2025, Volume and Issue: 328, P. 109906 - 109906

Published: April 19, 2025

Language: Английский

---

Differences in N fate and net eco-economic value between common urea and humic acid urea: Combined experiments using 15N tracer and field lysimeter

Environmental Technology & Innovation, Journal Year: 2025, Volume and Issue: unknown, P. 104316 - 104316

Published: June 1, 2025

Language: Английский

---

Performance of Nitrogen Fertilization and Nitrification Inhibitors in the Irrigated Wheat Fields

Agronomy, Journal Year: 2023, Volume and Issue: 13(2), P. 366 - 366

Published: Jan. 27, 2023

Effective nitrogen (N) management practices are critical to sustain crop production and minimize nitrate (NO3−) leaching loss from irrigated fields in the Columbia Basin (U.S.), but studies on applied limited. Therefore, 2014 2016, two separate field were conducted sandy loam soils region evaluate performance of various N fertilizers spring winter wheat. The treatments consisted nitrification inhibitors (NIs) (Instinct® II Agrotain® Ultra) combination with (urea urea ammonium [UAN]) under application methods (single vs. split-application) rates (100% 85% growers’ standard). results these trials demonstrated that fertilizer did not affect wheat grain yield (GY) protein (GP). In trial, higher NH4⁺-N content lower NO3−-N was observed UAN (0–30 cm). However, NIs had no considerable effect soil content. split generally reduced total mineral (TMN) content, especially at 30–60 cm, comparison a single application. use Instinct® tended reduce TMN contents, while Ultra effective inhibiting nitrification. Our findings suggest more effectiveness applications would enable growers optimize efficiency region.

Language: Английский

---

Crop yield increments will enhance soil carbon sequestration in coastal arable lands by 2100

Journal of Cleaner Production, Journal Year: 2023, Volume and Issue: 432, P. 139800 - 139800

Published: Nov. 22, 2023

Language: Английский

---

Nitrogen fertilizers and the future of sustainable agriculture: a deep dive into production, pollution, and mitigation measures

Soil Science & Plant Nutrition, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 21

Published: June 15, 2024

'All we are is a lot of talking nitrogen' stated by an American playwright, Arthur Miller, precisely expressing the crucial nature nitrogen for ecosystem. On one hand, deficiency limits food production in developing areas, while excessive compromises soil fertility, human health, and agricultural environmental sustainability industrialized world. other more than half applied soils usually lost to environment terms nitrous oxide (N2O) emissions, ammonia (NH3) volatilization, nitrate (NO3) leaching. Therefore, it required increase use efficiency plants improve crop production, save raw materials used produce fertilizers, mitigate adverse effects on health environment. This multidisciplinary review highlights natural synthetic sources nitrogen, emission different regions, applications, toxicity economic aspects management approaches such as biological fixation, 4 R strategy, enhanced nitrification inhibitors, digital mapping context sustainable development goals (SDGs).

Language: Английский

---

Mathematical models for adjustments in the quantification of ammonia volatilization from urea fertilizer applied on tropical pastures

Ciência Rural, Journal Year: 2023, Volume and Issue: 54(5)

Published: Dec. 8, 2023

ABSTRACT: In Brazil, urea is the most used nitrogen (N) fertilizer to improve forage production. However, their excessive use can cause environmental impacts through N losses, such as ammonia (NH3) volatilization. Therefore, current study adjusted and estimated NH3 volatilization from applied on tropical pastures in three rainfall conditions using mathematical models. Data were collected Marandu grass (Brachiaria brizantha) fertilized with 50 kg ha-1 during wet, intermediate, dry conditions. Ammonia was measured five semi-open chambers for 21 days. The linear, quadratic, exponential, Gompertz, Groot, Richards models tested fitting estimating generated predictions similar observed data, a high determination coefficient, indicating better fit of these equations precision accuracy. Groot model selected due lowest root mean square error prediction (0.29 % total lost NH3). greatest loss occurred followed by intermediate (20.2, 17.0, 11.3 NH3, respectively). losses after application ha-1, source, are altered according weather conditions, reaching 20% added wet period. recommended

Language: Английский

---

Nitrogen cycling and associated grey water footprint in croplands under different irrigation practices

Journal of Cleaner Production, Journal Year: 2024, Volume and Issue: 480, P. 144081 - 144081

Published: Nov. 1, 2024

Language: Английский

---