Use of sodium metasilicate for management of peach brown rot

Abstract

Peach brown rot, caused by the Monilinia fructicola fungus, is the main disease affecting peach crops, and it is mainly controlled via frequent fungicide applications. This study aimed at searching for alternatives to the intensive use of chemicals, evaluating silicon doses to control pre and postharvest peach brown rot and their influence on maturation parameters and fruit quality. Treatments consisted of control (water) and sodium metasilicate doses (2 g L-1, 4 g L-1, 6 g L-1, 8 g L-1 and 10 g L-1 of water). The following assessments were made: spore germination and in vitro mycelial growth, brown rot incidence, soluble solids, titratable acidity, flesh firmness, total polyphenol content and fruit ethylene production and respiration rate. The 2 g L-1 dose reduced spore germination by 95 %. Doses of 6 g L-1 and 8 g L-1 satisfactorily reduced the disease incidence in the field, with 77 % and 89.2 % control, respectively. Sodium metasilicate resulted in the maintenance of great fruit firmness, reduced respiration and ethylene production and increased total polyphenol synthesis, but it did not influence the titratable acidity or soluble solids. Applying 6 g L-1 may potentially control pre and postharvest peach brown rot, besides increasing the total polyphenol synthesis and maintaining a higher flesh firmness.

Sodium silicate and chitosan: an alternative for the in vitro control of Colletotrichum gloeosporioides isolated from papaya (Carica papaya L.)

“…El control positivo consistió en una solución de ácido acético al 2 % (pH 5.6) y un control negativo consistió en medio de cultivo PDA sin tratamiento. has been reported against Alternaria alternata (melon) (Bi et al, 2006), Monilinia fructicola (peach) (Pavanello et al, 2016), G. citri-aurantii (citrus) (Li et al, 2019), Musicillium theobromae (banana) (Youssef et al, 2020) with good results. This research aimed to evaluate the effectiveness of chitosan and sodium silicate alone and in conjunction at different concentrations on C. gloeosporioides mycelial growth and sporulation.…”

Impact of chemical treatments on Leuconostoc bacteria from harvested stored cane/stale cane

“…It has been reported that sodium metasilicate as post-harvest dips has been used to lessen the losses occurring in avocado fruit [ 40 ]. Similarly, it was also applied on peach fruit to manage brown rot occurring after harvest considering its non toxic nature [ 41 ]. Likewise, formulations using Benzalkonium chloride such as dodecyl sulphate with BKC have also been used due to its disinfectant property [ 6 , 38 ].…”

Influence of Silicon on Tolerance to Water Deficit of Peach Trees

“…The role of Si in the tolerance to abiotic and biotic stresses is still poorly understood for most fruit trees, as most studies have been carried out in row crops (Fern andez-Escobar 2019). Among the few published studies concerning peach, Si has been reported to potentially control pre-and postharvest peach brown rot, to increase the total polyphenol synthesis, and to maintain a higher flesh firmness (Pavanello et al 2016). Al-Hamadani and Joody (2021) observed that Si applications in peach trees significantly increased growth, chlorophyll, and carbohydrate content.…”