Manure substitution for chemical nitrogen enhances soil quality without compromising maize yield: a short-term field experiment in Northeast China.

ABSTRACT:

Introduction

Manure substitution for chemical nitrogen has the potential to enhance crop yield, improve soil quality, and reduce environmental risks. Soil microorganisms perform critical functions in mediating soil nutrient cycling after the organic manure application. Nonetheless, how organic manure substitution regulates microbial communities to influence soil quality and crop yield remains unclear.

Methods

A one-year field experiment comprising four organic manure substitution rates (25%, 50%, 75%, and 100%) along with a no-substitution control was conducted.

Results and disscussion

Compared to CK, only 25% substitution rate maintained maize yield, while 50‒100% manure substitution decreased maize yield by 15.9‒67.2%. This is primarily due to the decrease in root b

SUBMITTER: Zhou C 

PROVIDER: S-EPMC12667183 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature