Protection methods

• During cultivation 

Whatever the situation, in the nursery or in the field, it is imperative that the seedlings and the root systems of the adult plants be removed from the nursery or the plot, and destroyed, in order to avoid spreading black rot and / or enrich the soil with plant debris and chlamydospores.

It should be noted that no fungicide is approved in France for the use Thielaviopsis on melon.

• Next crop

In the nursery, it is important to use healthy substrates. Plants produced in mini-clods should not be placed directly on the ground, especially if the latter has not been disinfected; a plastic film will have to insulate them.

Of crop rotation will be implemented is essential to prevent an increase in the inoculum levels of the soil. To be effective, they will be long enough, at least 4 to 5 years, and must not involve sensitive crops. T. basicola has been described on many plants: vegetable crops previously reported, field crops and industrial productions (cotton, peanuts, soybeans, alfalfa, lupine), and various ornamental plants (chrysanthemum, pelargonium, etc.). Cereals are a good precedent, as are rice and sorghum.

A soil disinfection may be considered under shelter with a fumigant (dazomet) ( e-phy ).

Tools used for tillage of contaminated plots should be thoroughly cleaned before being used in other healthy plots. It is the same for the wheels of tractors. Thorough rinsing with water and disinfection of this material will often be sufficient to rid it of soil and T. basicola .

The drainage of the plots, the fertilization of the plants, as well as their irrigation will be perfectly controlled; it will be advisable to maintain the pH of the soil around 6 and not to over-lime it. It will be necessary to be wary of certain organic matter brought to the ground.

To our knowledge, no variety of melon is resistant to T. basicola.

* Chemical control : As the number of pesticides available for a given use is constantly changing, we advise you to always confirm your choice by consulting the e-phy site of the Ministry of Agriculture and Fisheries which is an online catalog of products phytopharmaceuticals and their uses, fertilizers and growing media approved in France. This also applies to all biological products based on microorganisms or natural substances.