Fertilizer Use and Its Effects on Soil Microorganisms in Dong Phu Paddy Fields, Hanoi, Vietnam

Abstract

Fertilizer use is crucial for enhancing agricultural productivity, particularly in paddy rice cultivation. However, excessive or improper fertilizer application can adversely affect soil microorganisms, which play essential roles in nutrient cycling and maintaining soil health. This study aimed to assess the current status of fertilizer use and its effects on soil microorganisms in the paddy fields of Dong Phu, Hanoi. Soil samples were collected from fields with varying histories of fertilizer application, and microbial communities were analyzed using DNA isolation methods. The average concentrations of mineral fertilizers, compost fertilizers, and biofertilizers EGAP were found to be 59.12, 93.1, and 90.4 ng/µl, respectively. Furthermore, paddy soils were shown to harbor a wide variety of microbial species, including bacteria, fungi, and other microorganisms. Comparisons of microbial diversity and community composition between fertilized and unfertilized fields revealed noticeable variations. Changes in the relative abundance of certain microbial taxa resulting from fertilizer application could potentially influence soil fertility and nutrient cycling processes. These initial findings provide a foundation for future research aimed at proposing sustainable paddy soil management practices and fertilizer application strategies that preserve soil microorganisms and maintain soil quality in the study area.