Efficiency of soil-applied ^(67)Zn-enriched fertiliser across three consecutive crops

作     者：Edson M.MATTIELLO Eduardo L.CANCELLIER Rodrigo C.DA SILVA Fien DEGRYSE Roslyn BAIRD Mike J.MCLAUGHLIN Edson M.MATTIELLO;Eduardo L.CANCELLIER;Rodrigo C.DA SILVA;Fien DEGRYSE;Roslyn BAIRD;Mike J.MCLAUGHLIN

作者机构：Department of Soil ScienceUniversidade Federal de ViçosaViçosaMinas Gerais(Brazil) Department of Soil ScienceUniversidade Federal de LavrasMinas Gerais(Brazil) The University of AdelaideSchool of AgricultureFood and WineFertiliser Technology Research CentrePMB 1Waite CampusGlen Osmond SA 5064(Australia) 

出 版 物：《Pedosphere》 (土壤圈（英文版）)

年 卷 期：2021年第31卷第4期

页      面：531-537页

核心收录：

学科分类：090101[农学-作物栽培学与耕作学] 09[农学] 0901[农学-作物学] 

基　　金：supported by funding from the Coordination for Scientific Support for Post-Doctoral Level Training (CAPES-BEX 1562/14-2) Brazil 

主　　题：agronomic biofortification elemental sulphur fertilizer residual effect plant uptake Zn bioavailability Zn fertilization Zn source 

摘      要：A very small amount of applied zinc(Zn) is taken up by crops, resulting in low recovery by plants. Adding elemental sulphur to zinc oxide(ZnO) fertiliser could improve Zn solubilisation and exert a higher residual effect on crops than soluble Zn sources. We produced an isotopically labelled Zn-elemental sulphur fertiliser and evaluated its performance in comparison to traditional Zn sources during sequential crop cultivation. Three ^(67)Zn-labelled fertilisers,ZnO, zinc sulphate(ZnSO_(4)), and ZnO co-granulated with elemental sulphur(ZnOS^(0)), were soil applied, and their contributions to the uptake of Zn by three consecutive crops, wheat, ryegrass, and corn, were assessed in a 294-d pot experiment. The contributions of Zn fertilisers followed the order: ZnSO_(4) ZnO= ZnOS^(0). The relative contributions of Zn fertilisers were lower in the first crop than in the subsequent crops. The overall recovery of applied Zn by the three crops was higher for ZnSO_(4) than for ZnO and ZnOS^(0), reaching 1.56%, 0.45%, and 0.33% of the applied Zn, respectively. Zinc recovery by plants was very low, regardless of the source of Zn. Adding elemental sulphur to ZnO did not increase its effectiveness up to 294 d after application. Fertiliser contribution was higher for the subsequent crops than for the initial crop, indicating the importance of assessing the residual effects of Zn fertilisers.