Diagnosis of nutrient imbalance and interactions in wheat and faba bean in Kharga Oasis, Egypt

Author:

Ali Ali,Abdelhamid Safwat,El-Sadek Ashraf,Salem Emad

Abstract

Imbalanced nutrition has a major impact on crop productivity, particularly in hyper-arid environments, and precise interpretation is essential for designing appropriate nutrient management strategies. Compositional nutrient diagnosis (CND) was used to identify nutritional imbalances of multiple nutrients (N, P, K, Ca, Mg, Fe, Mn, Zn, and Cu) in wheat and faba bean cultivated in Kharga Oasis, Egypt. Significant nutrient interactions were also assessed using principal component analysis. Due to large differences in water and soil characteristics, wheat and faba bean yields from the surveyed area varied greatly, ranging from 2118 to 8211 and 1373 to 4962 kg ha-1, respectively. The CND indexes for the low-yield subpopulation of wheat were negative for P, Ca, and Zn, with average values of -0.82, -2.66, and -1.26, but positive for K, Mg, Fe, and Mn with average values of 4.80, 4.92, 1.70, and 0.57, respectively. In faba bean, N, P, Ca, and Zn were negative, with average values of -1.73, -0.67, -8.19, and -1.41, but K, Mg, Fe, Mn, and Cu were positive with average values of 2.62, 0.50, 1.32, 1.10, and 0.40, respectively. Synergistic interactions P-Zn and Mg-Fe, as well as antagonistic interactions P-Mg, P-Fe, Zn-Fe, Zn-Mg, Ca-Cu, N-Mn, Mn-Cu, and P-Ca, were evident from the principal component analysis of the data. This investigation reveals that the decline in crop yields in the study area is due to nutritional imbalance induced by a deficiency of Ca, Zn, and P and a surplus of Mg, K, Fe, and Mn, in addition to nutrient antagonism.  

Publisher

Firenze University Press

Subject

General Agricultural and Biological Sciences,General Environmental Science,Development

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3