Responses of nitrogen utilization and apparent nitrogen loss to different control measures in the wheat and maize rotation sytsem

Peng, Zhengping and Liu, Yanan and Li, Yingchun and Abawi, Yahya and Wang, Yanqun and Men, Minxin and An-Vo, Duc-Anh ORCID: https://orcid.org/0000-0001-7528-7139 (2017) Responses of nitrogen utilization and apparent nitrogen loss to different control measures in the wheat and maize rotation sytsem. Frontiers in Plant Science, 8:160. pp. 1-9.

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Abstract

Nitrogen (N) is an essential macronutrient for plant growth and excessive application rates can decrease crop yield and increase N loss into the environment. Field experiments were carried out to understand the effects of N fertilizers on N utilization, crop yield and net income in wheat and maize rotation system of the North China Plain (NCP). Compared to farmers’ N rate (FN), the yield of wheat and maize in reduction N rate by 21–24% based on FN (RN) was improved by 451 kg ha-1, N uptakes improved by 17 kg ha-1 and net income increased by 1671 CNY ha-1, while apparent N loss was reduced by 156 kg ha-1. The controlled-release fertilizer with a 20% reduction of RN (CRF80%), a 20% reduction of RN together with dicyandiamide (RN80%+DCD) and a 20% reduction of RN added with nano-carbon (RN80%+NC) all resulted in an improvement in crop yield and decreased the apparent N losses compared to RN. Contrasted with RN80%+NC, the total crop yield in RN80%+DCD improved by 1185 kg ha-1, N uptake enhanced by 9 kg ha-1 and net income increased by 3929 CNY ha-1, while apparent N loss was similar. Therefore, a 37–39% overall decrease in N rate compared to farmers plus the nitrification inhibitor, DCD, was effective N control measure that increased crop yields, enhanced N efficiencies, and improved economic benefits, while mitigating apparent N loss. There is considerable scope for improved N use effieincy in the intensive wheat -maize rotation of the NCP.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Faculty/School / Institute/Centre: Historic - Institute for Agriculture and the Environment
Faculty/School / Institute/Centre: Historic - Institute for Agriculture and the Environment
Date Deposited: 23 Mar 2017 05:38
Last Modified: 03 Jun 2021 05:21
Uncontrolled Keywords: apparent nitrogen loss, maize, net income, nitrogen efficiency, nitrogen fertilizer measures, wheat
Fields of Research (2008): 07 Agricultural and Veterinary Sciences > 0703 Crop and Pasture Production > 070306 Crop and Pasture Nutrition
Fields of Research (2020): 30 AGRICULTURAL, VETERINARY AND FOOD SCIENCES > 3004 Crop and pasture production > 300407 Crop and pasture nutrition
Socio-Economic Objectives (2008): D Environment > 96 Environment > 9699 Other Environment > 969999 Environment not elsewhere classified
Identification Number or DOI: https://doi.org/10.3389/fpls.2017.00160
URI: http://eprints.usq.edu.au/id/eprint/30576

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