ASSESSMENT OF SUBSTRATE SOLUTION EXTRACTION METHODS FOR DETERMINATION OF CHEMICAL ATTRIBUTES IN SOILLESS CULTURE OF BELL PEPPER AND MELON

Anderson Fernando Wamser; Arthur Bernardes Cecílio Filho; Camila Seno Nascimento; Carolina Seno Nascimento; Juan Waldir Mendoza Cortez; Rodrigo Hiyoshi Dalmazzo Nowaki

doi:10.1590/1983-21252022v35n112rc

Authors

Anderson Fernando Wamser Experimental Station of Caçador, Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina, Caçador, SC https://orcid.org/0000-0002-3604-2179
Arthur Bernardes Cecílio Filho Department of Plant Production, Universidade Estadual Paulista “Júlio de Mesquita Filho”, Jaboticabal, SP https://orcid.org/0000-0002-6706-5496
Camila Seno Nascimento Department of Plant Production, Universidade Estadual Paulista “Júlio de Mesquita Filho”, Jaboticabal, SP https://orcid.org/0000-0003-2558-5765
Carolina Seno Nascimento Department of Plant Production, Universidade Estadual Paulista “Júlio de Mesquita Filho”, Jaboticabal, SP https://orcid.org/0000-0002-8096-5392
Juan Waldir Mendoza Cortez Department of Plant Production, Universidad Nacional Agraria La Molina, La Molina, Peru https://orcid.org/0000-0002-2158-0943
Rodrigo Hiyoshi Dalmazzo Nowaki Department of Plant Production, Universidade Estadual Paulista “Júlio de Mesquita Filho”, Jaboticabal, SP https://orcid.org/0000-0002-0958-540X

DOI:

https://doi.org/10.1590/1983-21252022v35n112rc

Keywords:

Capsicum annuum L.. Cucumis melo L.. Aqueous extract. Plant nutrition.

Abstract

The aim of this study was to evaluate the efficiency of the porous ceramic cup extractors, associated with ion meters, for the determination of nutrients availability for bell pepper and melon crops in substrate. Substrate solution was acquired using aqueous extract 1:1.5 (v/v) and also the porous ceramic cup extractor. Electrical conductivity (EC), pH and macronutrient contents were determined for the substrate solution through analytical method. The concentrations of NO₃^- and K⁺ in the solutions obtained with porous ceramic cup extractors, and the N and K contents in the diagnostic leaf for nutritional evaluation were also determined. The concentrations of NO₃^- and K⁺ using the porous ceramic cup extractors have strong correlation (r=0.96 and 0.92, respectively) with the ones obtained using the standard method, as well as a moderate correlation (r=0.65) and a strong one (r=0.71) with contents of N and K, respectively, in the melon diagnostic leaf; and a weak correlation (r=0.36 and 0.26, respectively) in the bell pepper diagnostic leaf. The use of porous ceramic cup extractors for obtaining the substrate solution and the determination of the N-NO₃^- and K⁺ contents by means of specific ion meters are a fast method of evaluating nutrients availability in soilless cultures.

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Author Biography

Anderson Fernando Wamser, Experimental Station of Caçador, Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina, Caçador, SC

Produção Vegetal/Olericultura

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