Synergistic Effects of Rice Straw Return and Nitrogen Fertilizer on Rhizosphere Bacterial Communities and Soil Fertility
Journal Title: Journal of Soil, Plant and Environment - Year 2024, Vol 3, Issue 1
Abstract
Returning straw to the field combined with nitrogen (N) fertilizer application is an effective way to enhance soil fertility. While previous studies have focused on soil's physical and chemical properties, the impact of straw returning on the microbial community has been less explored. In this study, we used four treatments including control (CK), nitrogen 150 kg ha−1 (N), straw return 10 tonnes ha−1 (SR), and combined SR and N (SRN= straw return 5 tonnes ha−1 + nitrogen 75 kg ha−1) to understand the effects of N fertilizer application and straw returning on bacterial community structure. Using high-throughput sequencing, we analyzed the bacterial community under different treatments and identified the main factors influencing soil bacterial communities. Results showed that soil properties such as pH, soil organic carbon (SOC), and available phosphorous (AP) were significantly higher in SR+N treatments. While AP, available nitrogen (AN), available potassium (AK), and total nitrogen (TN) were higher in sole N applied treatments. The results of high-throughput sequencing analyses demonstrated that the main bacteria at the phylum level were Actinobacteria (31-34%), Proteobacteria (25-30%), Acidobacteria (15-21%), and Chloroflexi (13-16%) across the treatments. Furthermore, the SR+N treatment exhibited the highest relative abundances of Dependentiae, Proteobacteria, Chloroflexi, and Bacteroidetes compared to all other treatments. Our results indicated that the combined application of straw return and N fertilizer enhanced soil fertility and increased the abundance of beneficial soil bacteria. Additionally, SOC emerged as the primary factor influencing variations in soil bacterial communities. However, several beneficial bacteria were less abundant in the combined treatment and more prevalent in the sole SR or sole N treatments. Thus, further research is necessary to develop new straw return strategies that optimize agricultural yields while minimizing ecological impacts.
Authors and Affiliations
Nasita Rahman Borny, Golam Mohammod Mostakim, Asif Raihan, Md Shoaibur Rahman
Keywords
Related Articles
- EP ID EP736188
- DOI https://doi.org/10.56946/jspae.v3i1.404
- Views 50
- Downloads 1
Impact of Nitrogen, Zinc and Humic Acid Application on Wheat Growth, Morphological Traits, Yield and Yield Components
To investigate the response of wheat to different levels of nitrogen (N), zinc (Zn) and humic acid (HA), an experiment was conducted at Agronomy Research Farm, the University of Agriculture, Peshawar, during 2014-15. The...
Residual Effect of Biochar and Legumes on Soil Fertility, Yield and Yield Components of Wheat
Biochar and the use of legumes in cropping systems are considered sustainable approaches to boost crop yield and preserve soil fertility. In the current study, the effects of leftover biochar and previously planted legum...
Integrated Effect of Heavy Metal-Tolerant Rhizobacteria and Phosphorus on Maize Growth and Phosphorus Bioavailability in Contaminated Soil
Toxic metals significantly influence agricultural crop yields and have adverse effects on animals and human Hence, in the current study impact of different strains of phosphorus-solubilizing bacteria (PSB) and levels of...
Elucidating Genetic Variability of Brassica napus L. Progenitors and Their Crosses for Enhanced Qualitative Traits
Evaluation of the breeding population is crucial for the selection of a superior genotype. Hence, the present study was conducted to assess genetic variation among five Brassica napus L. parents and their diallel hybrids...
Evaluation of integrated nutrient management on soil health, maize productivity and grain quality
Managing various organic residues produced from agricultural waste is today's prominent need. The present experiment was conducted to evaluate the effect of integrated, chemical, and organic fertilizers on maize producti...