How to minimize the residues of the active ingredients in the fruits?

PROBLEM

In modern agriculture, the use of phytosanitary products achieves high productions with high quality that are necessary to obtain adequate production levels that allow feeding the growing population of the planet.

However, the use of active matter is increasingly limited to prevent their concentration in food from damaging human health.

So, how to minimize the residues of the active matter in the fruits?

In citrus production, several treatments are used. Insecticide, for the control of aphids, California red louse, and acaricide, for the control of spider. In addition, fungicidal treatments for the control of Alternaria, Mycosphaerella. In this way, a total of four active matters are used which some, depending on the case, needs various applications.

Our client in the Valencia area, specifically l´Horta Nord, is managing the Navel variety farm within EDYPRO‘s citrus management program through biotechnology.

SOLUTION

In 2017 our customer used:

  • May: Piraclostrobin 25 (Cabrio Top) and Mancozeb in their habitual doses with the spring anti-stress treatment and MELASTOP in 1,5 L x 1000 L.
  • June: Espirotetramat (Movento) in the habitual doses with MELASTOP in 1,5 L x 1000 L.
  • August: Espirodiclofen (Envidor) in the habitual doses recommended by the manufacturer and with the EDYPRO‘s products in order to improve the fruit quality with MELASTOP in 1,5 L x 1000 L.

RESULTS

Once the fruit was harvested, in December, the trading company analyzed the batch and was surprised by the low level of the Maximum Residue Limit (MRL) presented by the results of the multi-residue analysis, mandatory for all the fruit. that is put on the market.

Pesticides GC-MS/MS:

  • None of the active matters analyzed are greater than or equal to the LC.

Pesticides HPLC-MS/MS:

  • Espirotetramat-enol 0.01 mg/kg
  • Glucosid espirotetramat-enol 0.01 mg/kg
  • Espirotetramat sum (1) 0.02 mg/kg (maximum allowed = 1.0)

Here you can check the Maximum Residue Limits (MRLs) for Spirodiclofen and Spirotetramat in different countries. You can see that the residue is well below the limits allowed in almost every country in the world.

After a thorough analysis of the situation, our R & D & i Department has come to the conclusion that, thanks to the action of MELASTOP, our enhancer of phytosanitary treatments that controls alkaline hydrolysis and enhances the activation of Active ingredients, extending their useful life, also achieve that the molecules of the active substances degrade very quickly and without leaving residues in the plant material (fruits or leaves).

For this reason, the phytosanitary products accompanied with MELASTOP not only improve their effectiveness due to the better recovering of the vegetative mass and the penetration potential that the product ensures, but its application also entails an almost complete degradation of the active matter and minimizes its concentration in the fruits.

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