Sesame response to nitrogen management under contrasting water availabilities

作     者：Elnatan Golan Zvi Peleg Zipora Tietel Ran Erel Elnatan Golan;Zvi Peleg;Zipora Tietel;Ran Erel

作者机构：Gilat Research CenterAgricultural Research OrganizationIsrael The Robert H.Smith Faculty of AgricultureFood and EnvironmentThe Hebrew University of JerusalemIsrael 

出 版 物：《Oil Crop Science》 (中国油料作物学报(英文版）)

年 卷 期：2022年第7卷第4期

页      面：166-173页

核心收录：

学科分类：09[农学] 0901[农学-作物学] 

基　　金：supported by the CFPN fund (Center of Fertilization and Plant Nutrition  grant number ICLF20161) 

主　　题：Nitrogen-use efficiency Seed-oil Irrigation Fertigation 

摘      要：Sesame is mainly cultivated under traditional,low-input *** breeding developments promoted the modernization and mechanization of sesame ***,only a few articles have been published concerning fertilization requirements for both modern and traditional *** field trials at two locations,we determined the response of irrigated sesame to nitrogen(N).Three promising sesame lines were tested combining two irrigation levels with four N *** a high irrigation level,N had a significant effect on growth,branching,and consequently,seed yield exceeding two-ton ha^(-1).A high N doze was accompanied by a decrease in the photosynthetic rate and leaf water *** δ^(13)C confirmed lower stomatal conductance under high N *** deficit irrigation,the N level had a minor effect on the monitored parameters,indicating N fertilization was not *** oil content was negatively correlated with seed N *** results question the necessity of N application when water is limited,as N fertilization promotes vigorous development that rapidly depletes soil ***,water availability should be considered when developing an N management *** high-yielding agro-systems,roughly 80–120 kg ha^(-1)N is required for optimal yield,bearing in mind the negative association between seed-N and oil content.