Drilling of super large granular slow-release humic acid compound fertilizer improves simultaneously environmental and economic benefits in peach orchard

Yang, Guang; Wang, Yu; Wang, Shenqiang; Zhao, Xu

doi:10.1016/j.agee.2023.108437

Cited by 6 publications

(2 citation statements)

References 54 publications

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“…Strategy 2 -changing the type of applied fertilizer. In conventional crop production, the commonly available urea and urea/ammonium-based compound fertilizers once applied to the soil quickly dissolve and release massive NH4 + to create overwhelming NH3 volatalization 44 . Therefore, companies must produce fertilizers that are efficient, clean and less polluting.…”

Section: Impact Of Nh3 Emission Mitigation On Pm25 Concentrations Com...mentioning

confidence: 99%

Ammonia mitigation campaign with smallholder farmers improves air quality while ensuring high cereal production

Kang,

Wang,

Heal

et al. 2023

Nat Food

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Reducing cropland ammonia (NH3) emissions while improving air quality and food supply is a challenge, particularly in China where there are millions of smallholder farmers. We tested the effectiveness of a tailored nitrogen (N) management strategy applied to wheat-maize cropping systems in "Demonstration Squares" across Quzhou county in the North China Plain. The N management techniques included optimal N rates, deep fertilizer placement and application of urease inhibitors, implemented through cooperation between government, researchers, businesses and smallholders.Compared with conventional local smallholder practice, our NH3 mitigation campaign reduced NH3 volatilization from wheat and maize by 49% and 39%, and increased N use efficiency by 28% and 40% and farmers' profitability by 25% and 19%, respectively, with no detriment to crop yields. County-wide atmospheric NH3 and PM2.5 concentrations decreased by 40% and 8%, respectively. County-wide net benefits were estimated at $7.0 million. Our "Demonstration Square" approach shows that cropland NH3 mitigation and improved air quality and farm profitability can be achieved simultaneously by coordinated actions at the county level. Ammonia (NH3) is a major alkaline atmospheric gas that plays an important role in the nitrogen (N) cycle and other atmospheric chemical processes 1 . China is the global hotspot of cropland NH3 emissions 2 . The country accounts for >30% of global N fertilizer consumption, but the N use efficiency (NUE) is only 40% for major food crops such as maize and wheat 3 . Due to the low NUE, N losses to air and water are high and consequently total annual NH3 emission in China account for approximately 34% of the global emissions 4 . Excessive NH3 emissions promote the formation of PM2.5 (fine particles of aerodynamic diameters <2.5 μm) 5 and are estimated to contribute 8-11% of PM2.5 concentrations in the most developed regions of China with consequent adverse impacts on human heath 6,7 , while enhanced NH3 deposition is a threat to the biodiversity of terrestrial ecosystems. Reducing NH3 emissions via increasing NUE is

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Section: Impact Of Nh3 Emission Mitigation On Pm25 Concentrations Com...mentioning

confidence: 99%

Ammonia mitigation campaign with smallholder farmers improves air quality while ensuring high cereal production

Kang,

Wang,

Heal

et al. 2023

Nat Food

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“…The development and use of pesticide sustained-release agents can extend the duration of pesticides and reduce the frequency of application so as to reduce the pollution of pesticides to the environment and improve the utilization rate of pesticides. − Yang et al used a superlarge slow-release humic acid compound fertilizer in a peach orchard for a two-year field experiment of three treatments, and the results showed that the production cost was reduced, the economic benefit was improved, and the environmental nitrogen loss was effectively reduced. Our previous research has also shown that the effective time of granules for pest control is longer than reported spraying pesticide solutions, and the control efficacy can be significantly improved …”

Section: Introductionmentioning

confidence: 99%

Preparation of Emamectin Benzoate·Hexaflumuron Granules Based on Response Surface Methodology

Zhang,

Song,

Long

et al. 2024

ACS Omega

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In order to obtain particles with an optimal loading rate and encapsulation efficiency and to explore the effects of sodium alginate, carboxymethyl chitosan, and bentonite on the particle loading rate and encapsulation rate, the preparation parameters of particles were optimized by the response surface method. A series of particles with constantly changing components were prepared, and the particle loading rate and encapsulation rate were determined. The release experiment of granules in different mass release media was implemented, and the optimal loading rate and encapsulation efficiency of particles were used to control the fall armyworm (FAW). The results showed that when the amount of sodium alginate was 1.83%, that of carboxymethyl chitosan was 0.41% and that of bentonite was 0.37%. The maximum theoretical value based on the response surface simulation was 92.63%, and the actual value at this ratio was 91.61%, which was 98.90% of the theoretical value. The release assay indicated that the mechanism of particle release in 2, 4, and 6 mL of the release medium was non-Fickian diffusion, and the controlled mechanism in 25 mL of the medium was Fickian diffusion. The beads were spread directly into maize leaf whorls in field production; at 14 days after application, the efficacy reached 91.28–98.82%. The combination of emamectin benzoate and hexaflumuron granules has a good control effect on the FAW.

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Environmental transport of excess nitrogen fertilizer in peach orchard: Evidence arising from 15N tracing trial

Yang,

Kang,

Wang

et al. 2024

Agriculture, Ecosystems & Environment

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Drilling of super large granular slow-release humic acid compound fertilizer improves simultaneously environmental and economic benefits in peach orchard

Cited by 6 publications

References 54 publications

Ammonia mitigation campaign with smallholder farmers improves air quality while ensuring high cereal production

Ammonia mitigation campaign with smallholder farmers improves air quality while ensuring high cereal production

Preparation of Emamectin Benzoate·Hexaflumuron Granules Based on Response Surface Methodology

Environmental transport of excess nitrogen fertilizer in peach orchard: Evidence arising from 15N tracing trial

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