Macronutrient Fertilization and Cadmium Absorption in Two Cocoa Clones

Author:

Reyes-Pérez Juan J.1ORCID,Pincay-Ganchozo Roger A.2ORCID,Carrillo-Zenteno Manuel D.2,Reynel Víctor3,Peña-Salazar Karina2,Tezara Wilmer34ORCID

Affiliation:

1. Facultad de Ciencias Pecuarias y Biológicas, Universidad Técnica Estatal de Quevedo, Quevedo 120501, Ecuador

2. Instituto Nacional de Investigaciones Agropecuarias, Estación Experimental Tropical Pichilingue, Quevedo 120313, Ecuador

3. Facultad de Ciencias Agropecuarias, Carrera de Agronomía, Universidad Técnica Luis Vargas Torres, Estación Experimental Mutile, Esmeraldas 080102, Ecuador

4. Centro de Botánica Tropical, Instituto de Biología Experimental, Facultad de Ciencias, Universidad Central de Venezuela, Apartado 47114, Caracas 1041-A, Venezuela

Abstract

Soil Cd is absorbed by roots and accumulated in cocoa plants, which represents a problem in the commercialization of beans. In order to evaluate whether the exogenous application of macronutrients (N, N-P, N-P-K, N-P-K-S, N-P-K-S-Mg, and N-P-K-S-Mg-Ca) mitigates the absorption, translocation, and accumulation of Cd in plants, soil pH and electric conductivity, dry root and shoot biomass, leaf gas exchange, chlorophyll content, and macronutrient bioaccumulation were evaluated in two cocoa clones (CCN-51 and EET-103) grown in a greenhouse. An increase in macronutrients gradually increased the extraction capacity of Cd in both clones, with the highest Cd values being obtained with the application of N-P-K-S-Mg-Ca. Macronutrient fertilization did not affect leaf gas exchange; however, it caused significant reductions of 30, 40, and 60% in chlorophyll content, shoot, and root dry biomass, respectively. The greatest translocation of Cd from the root to the shoot was obtained with treatments that included N in clone EET-103 and Ca in clone CCN-51. Fertilization with macronutrients did not decrease the absorption and accumulation of Cd in the cocoa seedlings, because a greater removal force of Cd from the adsorption complex towards the soil solution was caused by the exogenous application of Ca and Mg and an increase in soil acidity.

Funder

German Society for International Cooperation

National Science and Technology Fund

Publisher

MDPI AG

Subject

Horticulture,Plant Science

Reference72 articles.

1. Concentration of cadmium in cacao beans and its relationship with soil cadmium in southern Ecuador;Chavez;Sci. Total Environ.,2015

2. Cadmium mobility in three contaminated soils amended with different additives as evaluated by dynamic flow-through experiments;Hamid;Chemosphere,2020

3. Determinación del contenido de cadmio en suelos, frutos, granos fermentados y secos, licor de cacao y chocolate en zonas productoras de la región San Martín;Rev. Soc. Quím. Per.,2021

4. Scion-rootstock interaction and tolerance to cadmium toxicity in juvenile Theobroma cacao plants;Pirovani;Sci. Hortic.,2022

5. Effects of sulfur application on cadmium bioaccumulation in tobacco and its possible mechanisms of rhizospheric microorganisms;Li;J. Hazard. Mater.,2019

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