Slow-Release Fertilisers Control N Losses but Negatively Impact on Agronomic Performances of Pasture: Evidence from a Meta-Analysis DOI Creative Commons
Gunaratnam Abhiram

Nitrogen, Journal Year: 2024, Volume and Issue: 5(4), P. 1058 - 1073

Published: Nov. 17, 2024

High nitrogen (N) losses and low utilisation efficiency (NUE) of conventional-nitrogen fertilisers (CNFs) are due to a mismatch between N-delivery plant demand; thus, slow-release N (SRNFs) designed improve the match. A quantitative synthesis is lacking provide overall assessment SRNFs on pasture. This meta-analysis analyses application rate type agronomic performances with 65 data points from 14 studies in seven countries. Standardized mean difference for nitrate leaching N2O emission were −0.87 −0.69, respectively, indicating their effectiveness controlling losses. Undesirably, had more negative impact dry matter (DM) yield NUE than CNFs. Subgroup analysis showed that SRNF an all tested parameters. The biodegradable coating-type outperformed other types improving performances. rates (>100 kg ha−1) effective In conclusion, conducive losses, but they Further recommended assess efficacy developed using advanced technologies understand pastoral agriculture.

Language: Английский

Recent study on biodegradable hydrogels for agriculture application: a review DOI

Wan Amirah Najwa Wan Anuar,

Ros Azlinawati Ramli, Morsi Mahmoud

et al.

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: unknown, P. 115679 - 115679

Published: Feb. 1, 2025

Language: Английский

Citations

2
A Novel Large-Particle Slow-Release Fertilizer Improves Nutrient Use Efficiency and Yield of Cassava by Boundary Layer Limitation DOI Creative Commons

Cuicui He,

Hua Wang,

Guichun Li

et al.

Agronomy, Journal Year: 2025, Volume and Issue: 15(2), P. 261 - 261

Published: Jan. 21, 2025

Cassava is a crucial food and economic crop in tropical regions globally. In response to challenges fertilizer use efficiency for cassava cultivation, which traditionally compromised by extensive leaching broad root zone distribution, novel large-particle slow-release (LPF) was developed this study. This synthesized through solution polymerization using non-metallic minerals seaweed extract. Compared conventional SFs that release 99% of nutrients within 1 min, the LPF prolonged duration 51 min under optimal synthesis conditions: drying temperature 80 °C, total extrusion force 40 t, air pressure −0.40 bar, auxiliary mineral proportion 50%, water content 15%. Microbeam characterization (e.g., FTIR) kinetic modeling revealed superior performance resulted from crystal enrichment outer layer granules, facilitating intra-particle diffusion processes imposing boundary limitations on nutrient N, P, K). Field experiments validated fertilizer. Notably, soil treated with exhibited retention topsoil (0–20 cm) both horizontally vertically. Even two-thirds relative fertilizers, also displayed significant improvements yield, partial factor productivity, agronomic 33.56%, 200.01%, 513.84%, respectively. These results indicate presents promising sustainable cultivation.

Language: Английский

Citations

1
Development of Slow-Release Fertilizers with Function of Water Retention Using Eco-Friendly Starch Hydrogels DOI Creative Commons
Song Yue, Litao Ma, Qingfei Duan

et al.

Molecules, Journal Year: 2024, Volume and Issue: 29(20), P. 4835 - 4835

Published: Oct. 12, 2024

Over the past two decades, development and commercialization of slow-release fertilizers (SRFs) have significantly advanced, with primary aim mitigating environmental issues associated excessive fertilizer use. A range methodologies, including chemical physical reactions, incorporation into carriers porous layered structures, coating techniques, been explored refined. On other hand, global challenges such as drought desertification further underscore need for SRFs that not only control nutrient release but also improve soil moisture retention. This paper reviews application eco-friendly starch hydrogels water retention SRFs, particularly starch-based superabsorbent polymers (SAPs) produced through grafting copolymerization acrylamide. review explores both scientific issues, microstructures releasing mechanisms SAPs, technical development, involving technologies, multi-initialization processes, methods loading hydrogel, etc. Starch, a biodegradable renewable carbohydrate polymer, offers distinct advantages due to its excellent stability high reactivity. The fabrication techniques SAPs developed from traditional batch polymerization in aqueous solutions more efficient, solvent-free reactive extrusion. benefits based on encompass enhanced aeration, prevention deterioration, minimization evaporation, pollution control, reduction plant mortality, prolonged within soil. In this review, we summarize current progress, identify limitations existing propose future research directions enhance performance SRFs.

Language: Английский

Citations

7
Intergenerational Behavioral Transmission, Neighborhood Effects, and Farmers’ Farmland Quality Protection Behavior: A Case Study of Fertilizer Application in Gansu, China DOI Creative Commons
Hao Li, Jiahui Zhao, Wei-Yew Chang

et al.

Land, Journal Year: 2025, Volume and Issue: 14(3), P. 451 - 451

Published: Feb. 21, 2025

Farmers’ decision-making behavior is shaped by familial intergenerational ties and neighborhood relations, yet research often treats them as independent decision-makers, overlooking these critical dynamics. This oversight can undermine the effectiveness of policies on farmland quality. Using micro-survey data from 1045 maize farmers in Gansu Province, China, this study explores farmers’ fertilizer reduction through a theoretical framework that incorporates behavioral transmission effects. Economically optimal usage was calculated using Cobb–Douglas production function, with hierarchical regression models instrumental variable methods employed for analysis. Our findings reveal following: (1) The function indicates 74.1% apply more than economically amount. (2) Effective positive effects significantly promote adoption reduced application practices, further enhancing transmission. (3) Stronger not only enhance impact effective but also mitigate negative ineffective Additionally, mediate relationship between reduction. highlights importance kinship dynamics shaping use provides insights designing quality protection policies. By acknowledging relational factors, governments better sustainable agricultural practices minimize excessive application.

Language: Английский

Citations

0
Alteration of Sulfur-Bearing Silicate–Phosphate (Agri)Glasses in Soil Environment: Chemical Interactions and Biological Response DOI Creative Commons
Anna Berezicka, Agnieszka Wojteczko, Justyna Sułowska

et al.

Molecules, Journal Year: 2025, Volume and Issue: 30(8), P. 1790 - 1790

Published: April 16, 2025

Glasses exposed to soil environments are of interest across various scientific fields, from nuclear waste containment archaeological preservation and nutrient-delivery systems for plants. While immersion experiments provide valuable insights into the ion release kinetics in root- microbe-exuded solutions, they fail replicate complexities nutrient leaching real conditions. To address this, degradation behavior nutrient-bearing glasses (41SiO2·6(10)P2O5·20K2O·33(29)MgO/CaO/MgO + CaO) with increasing sulfate contents was investigated through a incubation experiment simulating Central European weather variability. A comprehensive approach, combining SEM observations EDS semi-quantitative analysis, revealed that acidic peat strongly promoted exchange, where protons medium replaced network cations. The glass composition played crucial role fracture behavior: incorporation increased rigidity, making more prone mechanical accelerating reaction front advancement. P2O5 content also key factor modulating reactivity, higher concentrations intensifying interactions medium. Limited water availability accelerated solution saturation, leading secondary phase precipitation temporary immobilization. These findings demonstrate reactivity can be fine-tuned adjustments highlight dynamic nature glass–soil interactions, including seasonal variations under

Language: Английский

Citations

0
Slow-Release Fertilisers Control N Losses but Negatively Impact on Agronomic Performances of Pasture: Evidence from a Meta-Analysis DOI Creative Commons
Gunaratnam Abhiram

Nitrogen, Journal Year: 2024, Volume and Issue: 5(4), P. 1058 - 1073

Published: Nov. 17, 2024

High nitrogen (N) losses and low utilisation efficiency (NUE) of conventional-nitrogen fertilisers (CNFs) are due to a mismatch between N-delivery plant demand; thus, slow-release N (SRNFs) designed improve the match. A quantitative synthesis is lacking provide overall assessment SRNFs on pasture. This meta-analysis analyses application rate type agronomic performances with 65 data points from 14 studies in seven countries. Standardized mean difference for nitrate leaching N2O emission were −0.87 −0.69, respectively, indicating their effectiveness controlling losses. Undesirably, had more negative impact dry matter (DM) yield NUE than CNFs. Subgroup analysis showed that SRNF an all tested parameters. The biodegradable coating-type outperformed other types improving performances. rates (>100 kg ha−1) effective In conclusion, conducive losses, but they Further recommended assess efficacy developed using advanced technologies understand pastoral agriculture.

Language: Английский

Citations

0