Potassium sources and doses in coriander fruit production and essential oil content

Marta Simone Mendonça Freitas,Ygor De Souza Gonçalves,Diego Alves Peçanha,Ivo José Curcino Vieira,Almy Júnior Cordeiro De Carvalho,Marlene Evangelista Vieira,Thaísa Capato Lima,Paulo Cesar Dos Santos

doi:10.1590/s0102-053620200305

Marta Simone Mendonça Freitas, Ygor De Souza Gonçalves + Show 6 more

Open Access

https://doi.org/10.1590/s0102-053620200305

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Journal: Horticultura Brasileira	Publication Date: Sep 1, 2020
Citations: 4	License type: CC BY 4.0

Affiliation: State University of Norte Fluminense

Abstract

ABSTRACT Potassium (K) is one of the most required agricultural crop macronutrients, with potassium chloride being the most applied source. However, this fertilizer is not recommended for several crops due to its high chlorine content, promoting final product quality losses, thus being replaced by potassium sulphate. The aim of the present study was to evaluate the production and macronutrient, essential oil and linalool contents of coriander fruits submitted to different potassium sources and doses. The research was performed in a greenhouse, in plastic 46 kg boxes applying a mixture of soil and sand as substrate. The experimental design was of randomized blocks, applying a 2x4 factorial arrangement, with two potassium sources (potassium chloride and sulphate) at four doses (50, 100, 150 and 200 mg of K/kg substrate), performing four replicates. The highest fruit yields, and phosphorus and sulfur fruit contents were verified in plants fertilized with K2SO4. The application of increasing potassium doses, regardless of the source, resulted in increased K and decreased Ca contents and did not affect N and Mg fruit levels in the fruits. The highest essential oil concentration in fruits (0.15 g) and linalool in essential oils (0.42 mg) were verified when 153.8 and 131.3 mg of K/kg substrate using K2SO4 were applied, respectively.

Highlights

Fontes e doses de potássio na produção de frutos e teor de óleos essenciais de coentro
Essential oils extracted from C. sativum fruits have as main constituent linalool, a monoterpene displaying antioxidant (Baghdadi et al, 2016; Duarte et al, 2016), antimicrobial and anti-inflammatory (Sourmaghi et al, 2015; Özkinali et al, 2017) activities, as well as insecticide properties (Benelli et al, 2013)
The aim of the present study was to evaluate coriander fruit production, macronutrient content and essential oil and linalool content in fruits submitted to different K sources and doses

Summary

Introduction

Fontes e doses de potássio na produção de frutos e teor de óleos essenciais de coentro. Objetivouse neste trabalho avaliar a produção, os teores de macronutrientes, de óleos essenciais e de linalol em frutos de coentro submetidos a diferentes fontes e doses de potássio. O delineamento experimental foi de blocos ao acaso, em arranjo fatorial 2x4, sendo duas fontes de potássio (cloreto e sulfato de potássio) e quatro doses (50, 100, 150 e 200 mg de K/kg de substrato), com quatro repetições. Coriander (Coriandrum sativum), belonging to the Apiaceae family, is originally from the Mediterranean region and has been extensively cultivated in North Africa, Central Europe and Asia for more than three thousand years (Sahib et al, 2013; Laribi et al, 2015). Linalool is an important substance for the production of cosmetics and fragrance products, widely used in the food industry (Duarte et al, 2016)

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