Humic substances:Structure,function and benefits for agroecosystems—a review

作     者：Jaya TIWARI AL RAMANATHAN Kuldeep BAUDDH John KORSTAD Jaya TIWARI;AL RAMANATHAN;Kuldeep BAUDDH;John KORSTAD

作者机构：Department of Community Medicine and School of Public HealthPostgraduate Institute of Medical Education and ResearchChandigarh 160012(India) Skill faculty of Applied Sciences and HumanitiesShri Vishwakarma Skill UniversityPalwal Haryana 121102(India) School of Environmental SciencesJawaharlal Nehru UniversityNew Delhi 110067(India) Department of Environmental SciencesCentral University of JharkhandRanchi 835205(India) Department of Biology and Global Environmental SustainabilityOral Roberts UniversityTulsa OK 74171(USA) 

出 版 物：《Pedosphere》 (土壤圈（英文版）)

年 卷 期：2023年第33卷第2期

页      面：237-249页

核心收录：

学科分类：07[理学] 0903[农学-农业资源与环境] 0713[理学-生态学] 

主　　题：fulvic acid humic acid humin humus nutrient supply soil health sustainable agriculture 

摘      要：The increasing global demand for food production,often causing excessive use of chemical fertilizers,has led to the deterioration of soil health.Immediate action is required to restore soil health in a sustainable manner.This review advocates switching to use of organic matter(manure and compost)that contains vital nutrients for plant growth and helps restore soil health.Humic substances(HSs),derived from degraded plant remains and found ubiquitously in nature,are an important source of organic matter.The application of HSs to soil enhances essential nutrient supply and assimilation of atmospheric CO_(2)due to increasing biomass yield.Promoting HS application globally can help lower atmospheric CO_(2)concentrations and create a sustainable agricultural practice.However,the process of humification and the molecular structure of HSs remain poorly understood subjects in soil science.Therefore,it is imperative to understand the mechanisms underlying various roles of HSs in agroecosystems.This review offers an insight into the various structural and functional aspects of HSs,particularly fulvic acid and humic acid.The dynamic and interactive nature of HSs creates a framework for sustainable agriculture.