Get started
Work

Gaseous and leaching loss of nitrogen during winter onion cultivation in monolithic weighable lysimeter with sandy loam texture

Year: 2024
Type: article
Abstract: Nitrogen (N) cycles through the atmosphere and water systems, impacting the environment.In this study, we analyzed the atmospheric and subsurface movement of nitrogen following the use of nitrogen fertilizer during winter onion cultivation.Onions (Allium cepa L., 'Katamaru') were cultivated in a weighing lysimeter from November 1, 2022 to June 7, 2023.During the cultivation period, nitrous oxide (N 2 O) and ammonia (NH 3 ) volatilized into the atmosphere, and nitrate N (NO 3 --N) and ammonium N (NH 4 + -N) leached below 1.5 m were measured in both the onion cultivated (OC) and bare soil (BS) lysimeters.Emissions of N 2 O and NH 3 occurred upon fertilizer application, with more ammonia being produced in April compared to February due to differences in humidity and temperature, despite applying the same amount of nitrogen fertilizer.Comparing nitrogen volatilization and leaching in the OC and BS during the same period, it was found that nitrogen volatilization was 9.2% and subterranean leaching was 0.4% of the applied nitrogen fertilizer in the OC, with most nitrogen being absorbed by the plants and remaining in the soil.The total soil nitrogen content in the BS decreased by 0.3 g kg -1 when comparing the same period before and after onion harvest, indicating that N 2 O and NH 3 volatilization and leaching also occurred in the non-cultivated land.Therefore, it is important to apply appropriate amounts of nitrogen fertilizer to minimize direct greenhouse gas emissions from nitrogen fertilizer use.Also, management to prevent nitrogen accumulation is necessary to reduce nitrogen loss from farmland in winter season.
DOI: 10.7745/kjssf.2024.57.4.261
Language: English
Subfield: Soil Science
Open Access status: diamond
OpenAlex ID: W4405118215
FWCI: 0.444
Cites: 25
Cited by: 2
Related to: 10