Multi-Stage Fertilizer Recommendation for Spring Maize at Field Scale Based on Narrowband Vegetation Indices DOI

Zenghui Jia,

Yansong Wang, Qianyue Zhang

et al.

Published: Jan. 1, 2023

Crop fertilizer recommendations that are site-specific and can be adjusted at multiple growth stages offer promise for improved nutrient management, use efficiency, crop yield. There considerable challenges in collecting a large number of soil samples by using the traditional methods, thus modern approach was urgently proposed presently. Unmanned aerial vehicle (UAV) remote sensing techniques is particularly attractive this context its ability to monitor status predict yield time required scale with much lower expenses. This study examined topdressing recommendation method based on UAV-based hyperspectral images long-term NPK combined experiment conducted spring maize cropping system Northeast China. The imagery were acquired critical (jointing, silking, maturity) from field 120 microplots, five N application amounts, P K amounts during 2019-2020. leaf nitrogen content (LNC) measurement data each microplot also collected stages. 10 narrowband vegetation indies (VIs) derived hypersepctral as effective indicators estimation To determine stages, firstly, optimal which applied total requirement achieve highest obtained; Secondly, thresholds VIs justify if needed calculated regression model established relative VIs; At last, already jointing silking obtained response amounts. results showed (1) 180 kg ha-1, could combinations fertilizer; (2) Five (NIR/G, SR, RVI, CIgreen, mND705) significantly correlated both LNC these below identified 95% yield; (3) all presented high fitting accuracies However, there noticeable differences sensitivity Therefore, we developed cost-effective provide multi-stage

Language: Английский

Is it necessary to increase the maize planting density in China? DOI
Guangxin Zhang, Chunge Cui,

Yufeng Lv

et al.

European Journal of Agronomy, Journal Year: 2024, Volume and Issue: 159, P. 127235 - 127235

Published: June 13, 2024

Language: Английский

Citations

8
Effect of No-Tillage on Soil Bacterial Community Structure in the Black Soil Region of Northeast China DOI Open Access

Chuan Liu,

Gang Liu, Hui Gao

et al.

Sustainability, Journal Year: 2025, Volume and Issue: 17(5), P. 2114 - 2114

Published: Feb. 28, 2025

To assess the effects of prolonged no-tillage practices on soil health and crop output, an 18-year field study was carried out in black region Northeast China. We investigated variations physicochemical properties, bacterial community structure, soybean yield under different (NT) durations from year 10 to 18 conventional tillage (CT) treatments for years. The findings indicated that (NT18) treatment resulted significantly greater levels organic matter, total nitrogen, available phosphorus—18.3%, 30.4%, 65.8% higher, respectively (p < 0.05)—compared traditional (CT18) treatment. In 0–30 cm layer, relative abundance Acidobacteriota had risen with duration no-tillage, whereas Proteobacteria, Gemmatimonadota, Verrucomicrobiota shown a decline. addition, increased network complexity, longer leading higher complexity. Soybean by 8.5% NT18 compared CT18 0.05). These provide insights into interaction between microbial communities within region, thereby establishing solid foundation developing efficient, ecological, sustainable conservation systems

Language: Английский

Citations

1
Enhancing nitrogen removal in source water with intermittent aeration: Improved performance of iron-reducing denitrifying bacteria DOI
Honghong Guo, Na Li,

Shuhong Xue

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 498, P. 154960 - 154960

Published: Aug. 18, 2024

Language: Английский

Citations

6
Fertilization regulates global thresholds in soil bacteria DOI
Cai Chen, Shu‐Le Li, Qing‐Lin Chen

et al.

Global Change Biology, Journal Year: 2024, Volume and Issue: 30(8)

Published: Aug. 1, 2024

Abstract Global patterns in soil microbiomes are driven by non‐linear environmental thresholds. Fertilization is known to shape the microbiome of terrestrial ecosystems worldwide. Yet, whether fertilization influences global thresholds remains virtually unknown. Here, utilizing optimized machine learning models with Shapley additive explanations on a dataset 10,907 samples from 24 countries, we discovered that microbial community response highly dependent contexts. Furthermore, interactions among nitrogen (N) addition, pH, and mean annual temperature contribute bacterial diversity. Specifically, observed positive responses within pH range 5.2–6.6, influence higher (>15°C) diversity being this but reversed more acidic or alkaline soils. Additionally, revealed threshold effect organic carbon total nitrogen, demonstrating how N addition amount interacted communities specific edaphic concentration ranges. Our findings underscore complex control under fertilization.

Language: Английский

Citations

4
Dense planting and nitrogen fertilizer management improve drip-irrigated spring maize yield and nitrogen use efficiency in Northeast China DOI Creative Commons

Liang Fang,

Guoqiang Zhang, Bo Ming

et al.

Journal of Integrative Agriculture, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 1, 2024

Language: Английский

Citations

4
Microbial-mediated soil dissolved organic nitrogen transformation pathways: Implications for groundwater nitrogen contamination risk mitigation DOI
Leyun Wang, Miao Li,

Xiang Liu

et al.

Journal of Environmental Sciences, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Language: Английский

Citations

0
Soil bacterial diversity and community structure of cotton rhizosphere under mulched drip- irrigation in arid and semi-arid regions of Northwest China DOI Creative Commons
Man Zhang,

Yang Hu,

Yue Ma

et al.

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 3, 2025

Abstract Background Xinjiang is situated in an arid and semi-arid region, where abundant heat sunlight create highly favorable conditions for cotton cultivation. Xinjiang's output accounts nearly one-quarter of global production. Moreover, the implementation advanced planting techniques, such as 'dwarfing, high-density, early-maturing' strategies combined with mulched drip irrigation, ensures stable high yields this region. Despite these advancements, limited research has focused on microbial mechanisms fields employing methods. Results The bacterial phoD communities rhizosphere were predominantly composed nine phyla (i.e., Proteobacteria, Actinobacteria, Acidobacteria, Gemmatimonadetes, Chloroflexi, Bacteroidetes, Rokubacteria, Firmicutes, Nitrospirae) five Planctomycetes, Firmicutes), respectively. Alpha diversity analysis indicated that medium yield field (MYF) exhibited higher richness indices compared to low (LYF) (HYF) fields. symbiotic network LYF revealed greater values average degree, number edges, modularity, suggesting a more complex structure both communities. Mantel test, RDA, PLS-PM model identified soil pH, electrical conductivity (EC), organic phosphorus (OP), available (AP), total nitrogen (TN), biomass carbon (MBC), clay content main driving factors influencing changes community structure. Conclusion These findings provide theoretical basis future aimed at improving quality yield.

Language: Английский

Citations

0
Optimum plant density and inorganic fertilizer application improved selected soil chemical properties and common bean productivity in southern Ethiopia DOI Creative Commons

Demissie Alemayehu,

Deressa Shumi,

Erana Kebede

et al.

Agrosystems Geosciences & Environment, Journal Year: 2025, Volume and Issue: 8(1)

Published: March 1, 2025

Abstract Poor soil fertility and inappropriate plant density are the major factors that constrain productivity of common bean ( Phaseolus vulgaris L.) in tropical Africa, including Ethiopia. This problem necessitates improving optimizing agronomic practices. Therefore, we conducted field experiments from 2019 to 2021, integrating multinutrient fertilizer application improve properties southern The treatments included four densities (333,300 plants ha −1 , 250,000 200,000 166,600 ) five rates (0, 50, 100, 150, 200 kg NPS ). reduced pH while increasing organic carbon, total nitrogen, available sulfur phosphorus contents but did not affect cation exchange capacity. Similarly, at lowest density, capacity improved. Increasing increased growth yield components, particularly when was lowest. An optimum grain 3056.28 obtained with 150 a net return 80,132.56 ETB marginal rate 4169.10%. It concluded applying resulted an yield. Using stated amount study area, smallholder farmers can sulfur, availability.

Language: Английский

Citations

0
Enhancing nitrogen fertilizer productivity in cotton fields in southern Xinjiang by improving the soil microenvironment through water and nitrogen management DOI Creative Commons
Fengnian Zhao, Weixiong Huang, Xin Zhao

et al.

Agricultural Water Management, Journal Year: 2025, Volume and Issue: 312, P. 109442 - 109442

Published: March 23, 2025

Language: Английский

Citations

0
Plant Growth Regulators Enhance Maize (Zea mays L.) Yield under High Density by Optimizing Canopy Structure and Delaying Leaf Senescence DOI Creative Commons

Tong Xu,

Dan Wang, Yu Si

et al.

Agronomy, Journal Year: 2024, Volume and Issue: 14(6), P. 1262 - 1262

Published: June 11, 2024

Shaping the canopy architecture and delaying leaf senescence in maize are pivotal strategies for extending crop’s photosynthetic period improving yield. The application of plant growth regulators (PGRs) is a critical cultivation measure, with timing being paramount importance. To explore effects PGR time on structure, characteristics yield, comparative two-year field study was undertaken during 2019–2020 growing seasons at Gongzhuling Experimental Station Jilin Academy Agricultural Sciences, utilizing containing ethephon as active ingredient. experiment structured two densities 60,000 90,000 plants ha−1, three distinct protocols: T10 (application 10th stage), T15 15th CK (control group sprayed water). result indicated that yield increased by 5.62% following treatment compared to under high density (90,000 ha−1). Furthermore, kernel per ear 1000-kernel weight 3.93% respectively, while abortion rate decreased. Correlation analysis showed components were correlated morphology, physiology, aging ha−1. Pollen also positively top area angle (p < 0.01). relative green maturity (RGLAM) positive correlations chlorophyll b, superoxide dismutase activity (SOD), peroxidase (POD), catalase (CAT), soluble protein content 0.01), displaying negative correlation malondialdehyde (MDA) Spraying 15-leaf stage can effectively enhance structure reduce upper angle, increase pollen density, boost number grains. it delayed leaves, prolonged functional weight, optimized light resource utilization, ultimately enhanced

Language: Английский

Citations

3