Optimized application of combined nitrogen and microbial decomposing inoculants increases wheat (Triticum aestivum L.) physiological growth and mitigates global warming potential under different water regimes

• Published in: Environmental and experimental botany 2023-02, Vol.206, p.105170, Article 105170
• Main Authors: Hamani, Abdoul Kader Mounkaila, Abubakar, Sunusi Amin, Wang, Guangshuai, Kama, Rakhwe, Kurihara, Takayuki, Liu, Kun, Gao, Yang, Duan, Aiwang
• Format: Article
• Language: English
• Subjects: Fertigation mode; Greenhouse gas emission; Microbial decomposing inoculants; TOPSIS method; Water stress
• ISSN: 0098-8472; 1873-7307
• DOI: 10.1016/j.envexpbot.2022.105170

Excessive nitrogen fertilizer (urea) application has caused several environmental problems, such as increased greenhouse gas (GHG) emissions, leading to global warming (GWP). Monitoring nitrogen fertilizer is crucial for winter wheat production. Very limited studies have comprehensively evaluated the influences of microbial decomposing inoculants on global warming potential from winter wheat experiments under different fertigation modes and water regimes. A pot experiment was conducted to determine the effects of co-application of nitrogen fertilizer and microbial decomposing inoculants (MDI) on GWP and winter wheat physiological growth under different water regimes. The two water levels were: W1 (85–80% θFC) and W2 (55–50% θFC). The six fertigation modes were: F1 (Normal irrigation water), F2 (MDI), F3 (MDI + 100% nitrogen), F4 (MDI + 50% nitrogen), F5 (Normal irrigation water + 100% nitrogen) and F6 (Normal irrigation water + 50% nitrogen). The total nitrogen rate was 240 kg ha−1. The results revealed that the co-application of nitrogen and MDI significantly (p