Preharvest treatments with low-risk plant protection products can help apple growers fulfill the demands of supermarket chains regarding pesticide residues and marketing apples under 0-residue brands

Andrej Paušič (Author), Mihaela Roškarič (Author), Mario Lešnik (Author)

Abstract

As a result of worried consumer pressure, European supermarket chains (ESC) have developed very strict rules about the number and concentration of pesticide active substance residues (AS) accepted in fruits. So-called fruit quality toxicological burden indicators were developed. If fruit suppliers do not comply with ESC requirements, their fruit is often rejected. It is becoming increasingly difficult for apple producers to meet all the requirements of the ESC, so they need new residue reduction tools. One of the options to lower the concentrations of residue on apples is a preharvest application of low-risk preparations (LRP) based on potassium bicarbonate (KHCO3) = PBC, coconut di-ethanol amide ((CH3(CH2)nC(=O)N(CH2CH2OH)2) = DEA, hydrogen peroxide (H2O2) = HP, and a mixture of microbes (EM) that have the ability to dissolve or disintegrate the AS residue. Trials were carried out to test the concept mentioned above. The application of LRP during the last four weeks of preharvest significantly reduced the residue concentration of pesticide AS in apples. Reduction rates among 25 active substances ranged from 0 to 100%, depending on the combination of LRP and AS. HP had the highest capacity to accelerate AS degradation, PB was the second most efficient, and DEA and EM displayed a low residue disintegration ability. The application of the tested LRP can enable apple growers to produce fruits with significantly lower residue concentrations and allows them to comply more successfully with strict ESC rules based on the calculations of toxicological burden indicators.

Keywords

hydrogen peroxide;potassium bicarbonate;effective microbes;detergent;pesticide residues;fruit marketing rules;

Data

Language:	English
Year of publishing:	2023
Typology:	1.01 - Original Scientific Article
Organization:	UM FKBV - Faculty of Agriculture
Publisher:	MDPI
UDC:	634.11.632.9
COBISS:	149685507
ISSN:	2073-4395
Views:	32
Downloads:	0
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	Slovenian
Secondary keywords:	vodikov peroksid;kalijev bikarbonat;učinkoviti mikrobi;detergent;ostanki pesticidov;pravila trženja sadja;
Type (COBISS):	Scientific work
Pages:	str. 1-18
Volume:	ǂVol. ǂ13, [Article no.1151]
Issue:	ǂIss. ǂ4
Chronology:	2023
DOI:	10.3390/agronomy13041151
ID:	23467874