CALCIUM SILICATE AS SALT STRESS ATTENUATOR IN SEEDLINGS OF YELLOW PASSION FRUIT cv. BRS GA1

Tarso Moreno Alves De Souza,Francisco Vanies Da Silva Sá,Medson Janer Da Silva,Caíque Santos Tomé Dourado,Vander Mendonça

doi:10.1590/1983-21252020v33n223rc

Tarso Moreno Alves De Souza, Francisco Vanies Da Silva Sá + Show 3 more

Open Access

https://doi.org/10.1590/1983-21252020v33n223rc

Copy DOI

Abstract

ABSTRACT Salt stress causes losses in the yields of crops, especially those of great economic and social-food importance, such as passion fruit. The objective of this study was to evaluate the effects of fertilization with calcium silicate on the mitigation of salt stress in yellow passion fruit seedlings. The experiment was conducted in a protected environment, in a randomized block design, arranged in a 4 x 3 factorial scheme, referring to four concentrations of calcium silicate (0; 2.22; 4.44 and 6.66 g per plant) and three levels of irrigation water salinity - ECw (0.5; 1.7 and 4.0 dS m-1), with four replicates, considering five plants as experimental unit. BRS GA1 seedlings were produced in 0.5-dm3 containers filled with a mixture of soil, washed sand and aged bovine manure, in a ratio of 1:1:1 (v:v:v). Plants received calcium silicate applications according to the studied doses in three plots, at 30, 45 and 60 days after sowing. At 90 days after sowing, plants were evaluated for growth and biomass accumulation. The use of water with salinity of 4.0 dS m-1 restricted the growth and biomass accumulation of passion fruit seedlings. The use of calcium silicate at dose of 3.5 g per plant mitigates salt stress in seedlings of passion fruit cultivar BRS GA1 when irrigated with saline water.

Highlights

Passion fruit (Passiflora edulis) is among the fruit crops with highest economic importance in Brazil, occupying a prominent position, even when compared to other tropical fruits with a greater tradition of consumption (MELETTI, 2011)
These changes are intensified by the inadequate management of saline water in agriculture, contributing to the increase in the concentration of salts in the soil, especially sodium, increasing electrical conductivity and, gradually, the exchangeable sodium percentage (HOLANDA FILHO et al, 2011)
The objective of this study was to evaluate the effects of fertilization with calcium silicate on the mitigation of salt stress in yellow passion fruit seedlings

Summary

Introduction

Passion fruit (Passiflora edulis) is among the fruit crops with highest economic importance in Brazil, occupying a prominent position, even when compared to other tropical fruits with a greater tradition of consumption (MELETTI, 2011). Water salinity and soil salinity in arid and semiarid regions are the main obstacles to obtaining satisfactory production in the agricultural system (SÁ et al, 2018; 2020) This problem is related to changes in soil physical and chemical attributes, such as the action of specific ions on germination, growth, production and nutrition of plants (BEZERRA et al, 2016; SILVA et al, 2019; SÁ et al, 2020). These changes are intensified by the inadequate management of saline water in agriculture, contributing to the increase in the concentration of salts in the soil, especially sodium, increasing electrical conductivity and, gradually, the exchangeable sodium percentage (HOLANDA FILHO et al, 2011)

Objectives

Methods

Results

Conclusion