Logo image
Back
Co-application of biochar and compost with decreased N fertilizer reduced annual ammonia emissions in wetland rice
Journal article   Open access

Co-application of biochar and compost with decreased N fertilizer reduced annual ammonia emissions in wetland rice

J. Ferdous, N. J. Mumu, M. B. Hossain, M. A. Hoque, M. Zaman, C. Mueller, M. Jahiruddin, R. W. Bell and M. M. R. Jahangir
Frontiers in sustainable food systems, Vol.6, 1067112
2023
DOI: https://doi.org/10.3389/fsufs.2022.1067112
pdf
Published919.49 kBDownloadView
CC BY V4.0,  Open Access

Abstract

Food Science & Technology Life Sciences & Biomedicine Science & Technology
Ammonia (NH3) emission from rice fields is a dominant nitrogen (N) loss pathway causing negative impacts on farm profitability and the environment. Reducing N fertilizer application to compensate for N inputs in organic amendments was evaluated for effects on N loss via volatilization, rice yields and post-harvest soil properties in an annual irrigated rice (Boro) - pre-monsoon rice (Aus) - monsoon (Aman) rice sequence. That experiment was conducted using the integrated plant nutrition system (IPNS; nutrient contents in organic amendments were subtracted from the full recommended fertilizer dose i.e., RD of chemical fertilizers) where six treatments with four replications were applied in each season: (T-1) no fertilizer (control), (T-2) RD, (T-3) poultry manure biochar (3 t ha(-1); pyrolyzed at 450 degrees C) + decreased dose of recommended fertilizer (DRD), (T-4) rice husk ash (3 t ha(-1)) + DRD, (T-5) compost (3 t ha(-1)) + DRD, and (T-6) compost (1.5 t ha(-1))+ biochar (1.5 t ha(-1)) + DRD. The N loss via volatilization varied twofold among seasons being 16% in irrigated rice and 29% in the pre-monsoon rice crop. In irrigated rice, T-6 had significantly lower NH3 emissions than all other treatments, except the control while in pre-monsoon and monsoon seasons, T-6 and T-3 were alike. Pooling the three seasons together, biochar (T-3) or biochar plus compost (T-6) reduced NH3 loss via volatilization by 36-37% while compost alone (T-5) reduced NH3 loss by 23% relative to RD. Biochar (T-3) and biochar plus compost mixture (T-6) reduced yield-scaled NH3 emissions by 40 and 47% relative to the RD of chemical fertilizer (T-2). The organic amendments with IPNS reduced the quantity of N fertilizer application by 65, 7, 24, and 45% in T-3, T-4, T-5, and T-6 treatments, respectively, while rice yields and soil chemical properties in all seasons were similar to the RD. This study suggests that incorporation of biochar alone or co-applied with compost and decrease of N fertilizer on an IPNS basis in rice-based cropping systems can reduce N application rates and NH3 emissions without harming yield or soil quality.

Details

UN Sustainable Development Goals (SDGs)

This output has contributed to the advancement of the following goals:

#12 Responsible Consumption & Production

Metrics

4 File views/ downloads
67 Record Views
10 Times Cited - Web of Science

InCites Highlights

These are selected metrics from InCites Benchmarking & Analytics tool, related to this output

Collaboration types
Domestic collaboration
International collaboration
Citation topics
3 Agriculture, Environment & Ecology
3.45 Soil Science
3.45.397 Nitrogen Management
Web Of Science research areas
Food Science & Technology
ESI research areas
Agricultural Sciences
Logo image