Use of organic compost with paracoccus denitrificans suspensions improve rice and wheat yields with lower emissions of greenhouse gases | [Pakistan Journal of Botany • 2025]

Author(s):

1. RUI KANG: Anhui Engineering Research Center for Smart Crop Planting and Processin Technology, Anhui Science and Technology University,Fengyang 233100,China

2. HONGZHI MIN: Anhui Engineering Research Center for Smart Crop Planting and Processin Technology, Anhui Science and Technology University,Fengyang 233100,China

3. XINGCHEN HUANG: Anhui Engineering Research Center for Smart Crop Planting and Processin Technology, Anhui Science and Technology University,Fengyang 233100,China

4. CHEN GANG: Rice Research Institute, Anhui Academy of Agricultural Sciences,Hefei 230041,China

5. HUAN LIU: Anhui Engineering Research Center for Smart Crop Planting and Processin Technology, Anhui Science and Technology University,Fengyang 233100,China

6. CHENHUI SHU: Anhui Engineering Research Center for Smart Crop Planting and Processin Technology, Anhui Science and Technology University,Fengyang 233100,China

7. HASSAN MUHAMMAD AHMAD: Rice Research Institute, Anhui Academy of Agricultural Sciences,Hefei 230041,China

8. LUIS ALEJANDRO JOSE MUR: Department of Life Sciences,Penglais Campus, SY23 2DA, Aberystwyth, Wales,UK

9. LANTIAN REN: Anhui Engineering Research Center for Smart Crop Planting and Processin Technology, Anhui Science and Technology University,Fengyang 233100,China

10. WENGE WU: Rice Research Institute, Anhui Academy of Agricultural Sciences, Hefei , China Anhui Agricultural University, 130, Changjiang West Road, Hefei ,China

Abstract:

In this experiment, we evaluated the effects of different compost proportions combined with Paracoccus denitrificans nitrate-reducing suspensions on greenhouse gas emissions and soil microbiota associated with rice and wheat plants, focusing on yield and quality outcomes. The treatments were as follows: T0 (single application of organic fertilizer), T1 (10% compost instead of fertilizer), T2 (20% compost replacement), T3 (30% compost replacement), W0 (clear water), W1 (P. denitrificans suspension MHZ006), W2 (P. denitrificans suspension MHZ007). Compost application improved crop yield ,quality of rice and wheat and the physical and chemical properties of the soil. Compared to T1W0, T2W0 and T3W0 increased soil proteobacteria by 7.34% and 12.03%. Firmicutes increased by 3.35% and 0.15%, respectively Nitrous oxide (N2O) emissions decreased by 16.98% and 48.27%, while methane (CH4) emissions rose by 1.36% and 23.62%, respectively. The application of P. denitrificans suspensions significantly reduced CH4 emissions. The combination of 30% compost and microbial suspension MHZ007, was the most effective fertilization measure, reducing CH4 and N2O by 80.75% and 96.12%, respectively while increasing yield by 15.77%, compared with that of a single fertilizer. Thus, 30% compos with microbial suspension MHZ007 effectively improves and enhances the yield and quality of rice and wheat, reduces N2O and CH4 emissions, and improves soil vitality.

Page(s): 77-86

DOI: 10.30848/PJB2025-1(40)

Published: Journal: Pakistan Journal of Botany, Volume: 57, Issue: 1, Year: 2025

Keywords:

Compost , greenhouse gas , Microbial suspension , Ricewheat rotation

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