![NO, N"2O, CH"4 and CO"2 fluxes in winter barley field of Japanese Andisol as affected by N fertilizer management [An article from: Soil Biology and Biochemistry]](https://www.ebooknetworking.net/books/B00/0PC/bigB000PC08Z0.jpg)
NO, N"2O, CH"4 and CO"2 fluxes in winter barley field of Japanese Andisol as affected by N fertilizer management [An article from: Soil Biology and Biochemistry]
Book Details
Author(s)H. Chu, Y. Hosen, K. Yagi
PublisherElsevier
ISBN / ASINB000PC08Z0
ISBN-13978B000PC08Z4
MarketplaceCanada 🇨🇦
Description
This digital document is a journal article from Soil Biology and Biochemistry, published by Elsevier in 2007. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.
Description:
The study was carried out at the experimental station of the Japan International Research Center for Agricultural Sciences to investigate gas fluxes from a Japanese Andisol under different N fertilizer managements: CD, a deep application (8cm) of the controlled release urea; UD, a deep application (8cm) of the conventional urea; US, a surface application of the conventional urea; and a control, without any N application. NO, N"2O, CH"4 and CO"2 fluxes were measured simultaneously in a winter barley field under the maize/barley rotation. The fluxes of NO and N"2O from the control were very low, and N fertilization increased the emissions of NO and N"2O. NO and N"2O from N fertilization treatments showed different emission patterns: significant NO emissions but low N"2O emissions in the winter season, and low NO emissions but significant N"2O emissions during the short period of barley growth in the spring season. The controlled release of the N fertilizer decreased the total NO emissions, while a deep application increased the total N"2O emissions. Fertilizer-derived NO-N and N"2O-N from the treatments CD, UD and US accounted for 0.20+/-0.07%, 0.71+/-0.15%, 0.62+/-0.04%, and 0.52+/-0.04%, 0.50+/-0.09%, 0.35+/-0.03%, of the applied N, respectively, during the barley season. CH"4 fluxes from the control were negative on most sampling dates, and its net soil uptake was 33+/-7.1mgm^-^2 during the barley season. The application of the N fertilizer decreased the uptake of atmospheric CH"4 and resulted in positive emissions from the soil. CO"2 fluxes were very low in the early period of crop growth while higher emissions were observed in the spring season. The N fertilization generally increased the direct CO"2 emissions from the soil. N"2O, CH"4 and CO"2 fluxes were positively correlated (P
Description:
The study was carried out at the experimental station of the Japan International Research Center for Agricultural Sciences to investigate gas fluxes from a Japanese Andisol under different N fertilizer managements: CD, a deep application (8cm) of the controlled release urea; UD, a deep application (8cm) of the conventional urea; US, a surface application of the conventional urea; and a control, without any N application. NO, N"2O, CH"4 and CO"2 fluxes were measured simultaneously in a winter barley field under the maize/barley rotation. The fluxes of NO and N"2O from the control were very low, and N fertilization increased the emissions of NO and N"2O. NO and N"2O from N fertilization treatments showed different emission patterns: significant NO emissions but low N"2O emissions in the winter season, and low NO emissions but significant N"2O emissions during the short period of barley growth in the spring season. The controlled release of the N fertilizer decreased the total NO emissions, while a deep application increased the total N"2O emissions. Fertilizer-derived NO-N and N"2O-N from the treatments CD, UD and US accounted for 0.20+/-0.07%, 0.71+/-0.15%, 0.62+/-0.04%, and 0.52+/-0.04%, 0.50+/-0.09%, 0.35+/-0.03%, of the applied N, respectively, during the barley season. CH"4 fluxes from the control were negative on most sampling dates, and its net soil uptake was 33+/-7.1mgm^-^2 during the barley season. The application of the N fertilizer decreased the uptake of atmospheric CH"4 and resulted in positive emissions from the soil. CO"2 fluxes were very low in the early period of crop growth while higher emissions were observed in the spring season. The N fertilization generally increased the direct CO"2 emissions from the soil. N"2O, CH"4 and CO"2 fluxes were positively correlated (P
