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FOCUS ON A DISEASE

RECEIVED IDEA

TIPS AND TRICKS

Preventive measures

FOCUS ON A DISEASE 🚨

Focus on a disease: ZYMV (Zucchini yellow mosaic virus) 🌱🦠

ZYMV is an aphid-borne virus that affects Cucurbitaceae, notably zucchinis and cucumbers.

How do you recognize the disease? 🦠

  • Thinning of leaf veins, yellowing, mosaic.
  • Deformation of new leaves.
  • Stopped or slowed plant growth (shorter internodes).
  • Fruit deformation and discoloration.

What are the means of prevention? 🩹

  • Use of tolerant varieties (for zucchinis such as ALIENOR, METEOR, KOUBERA, SUPER AYA, SUPER NADITA, etc., and for cucumbers ROMEO, TANAGA, ICARE).
  • Protect young plants and nurseries with protective sails.
  • Respect crop rotation and avoid planting cucurbits close to an area already contaminated by ZYMV.
  • Carefully weed plots and surrounding areas to eliminate sources of virus and/or vectors.
  • Eliminate the first infected plants to prevent the spread of the disease.
  • Chemical control of vectors (aphids) is not effective in controlling this virus.

RECEIVED IDEA 🌱

🌱 Idea received: the number of okra seeds to be planted per planting unit.

At TECHNISEM, we recommend that growers use a maximum of one to two seeds per poquet, as our seeds have a high germination rate, are film-coated with a biostimulant and have genetics that make them robust. In this way, the grower saves seed (enabling him to sow a larger area) and reduces competition between okra plants which, when sown too densely, see their yield decrease.📉

Example of recommended sowing:

✅Drop 1 seed per pack.
✅Every 4 bunches, place 2 seeds.
✅When seeds don’t germinate in some poquets, transplant additional plants.

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FOCUS ON A PEST

Cucurbit flies 🪰

A year ago, we tackled the issue of this pest, mainly present in Madagascar and Africa 📍
It’s a fly that deposits its eggs in the epidermis of young fruit, then the larvae develop by consuming the inside of the fruit, rendering it unconsumable. ❌

Hint 👇
– Young fruit becomes deformed.
– The area where the eggs have been deposited becomes brown, softening and hollowing.
– Opening the fruit reveals feeding larvae.

Preventive measures ✅
– Use yellow sticky traps or pheromone traps, and apply insecticides at fruit set.
– Use shallow ploughing in crops.

Do you have any tips on how to avoid this pest? 🤔

TIPS AND TRICKS 💡

Let’s discover the different types of weeding together 🌱

Here are different weeding techniques used to eliminate weeds in crops:

1. Manual weeding: this involves pulling up weeds by hand or using tools such as hoes, weeding knives or weeding hoes. This method is effective for small areas or areas that are difficult to access.

2. Mechanical weeding: Using mechanical tools such as rotary weeders, hoes or thermal weeders, weeds can be cut, burnt or pulled up. This may be appropriate for large areas.

3. Mulching: mulching consists of covering the soil with organic materials (such as straw, dead leaves, bark) or synthetic materials (such as plastic film, mulching fabric) to smother weeds by blocking light and conserving soil moisture.

4. Thermal weeding: this method uses heat to destroy weeds. Thermal weed-killers, such as flame weed-killers or steam weed-killers, apply heat directly to the weeds, causing them to die.

5. Chemical weeding: chemical herbicides are products used to selectively kill weeds. There are selective herbicides, which specifically target certain types of weed, and non-selective herbicides, which can kill all plants. However, it should be noted that chemical herbicides should be used with caution and in accordance with the manufacturer’s recommendations.

6. Preventive weed control: this approach involves preventing weed growth by applying physical barriers or growth inhibiting products before weeds appear. Examples include the use of mulch fabrics, geotextiles or the application of preventive products.

⚠️It is important to choose the appropriate weed control technique depending on the specific situation, the extent of the infestation and personal preferences. In some cases, a combination of techniques may be required to achieve the best results.

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