Title
ASSESSMENT OF SUBSTRATE SOLUTION EXTRACTION METHODS FOR DETERMINATION OF CHEMICAL ATTRIBUTES IN SOILLESS CULTURE OF BELL PEPPER AND MELON
Other title
AVALIAÇÃO DE MÉTODOS DE EXTRAÇÃO DA SOLUÇÃO DO SUBSTRATO PARA DETERMINAÇÃO DE ATRIBUTOS QUÍMICOS EM CULTIVO SEM SOLO DE PIMENTÃO E MELÃO
Date Issued
22 December 2022
Access level
open access
Resource Type
journal article
Author(s)
Publisher(s)
Universidade Federal Rural do Semi-AridoV
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.
Start page
117
End page
126
Volume
35
Issue
1
Language
English
OCDE Knowledge area
Protección y nutrición de las plantas
Subjects
Scopus EID
2-s2.0-85126431441
Source
Revista Caatinga
ISSN of the container
0100316X
Sponsor(s)
The authors acknowledge the retired Professor of Federal Institute Sul de Minas Gerais, Lui] Augusto Gratieri, for the collaboration in the experiment conduction in Mu]ambinho (MG, Bra]il), and the Smo Paulo Research Support Foundation for funding the research project of the second author.
The authors acknowledge the retired Professor of Federal Institute Sul de Minas Gerais, Luiz Augusto Gratieri, for the collaboration in the experiment conduction in Muzambinho (MG, Brazil), and the S?o Paulo Research Support Foundation for funding the research project of the second author.
Sources of information:
Directorio de Producción Científica
Scopus