Phytotoxicité

Class: blessures faites Man
Common Name: Phytotoxicité
Potential Host:

All crops

In Short:

Phytotoxicity occurs when substance causes a toxic effect on plants.

Phytotoxicity can occur when chemicals are applied, such as in foliar spraying and irrigation systems, in order to protect plants from diseases, pests and other hazardous. Additionally, phytotoxicity can occur following applications of fertilizers or growth regulators.

Reasons:

*Improper use: Applying off label brands, overdosing plants with chemicals, and applying concentrations that are too high.

*Timing: Applications took place in unfavorable environmental conditions, such as the temperature was too hot.

Phytotoxicity symptoms vary significantly between different crops and substances. However, the symptoms will usually include:

A rapid, sweeping change to most plants in the field in the form of deformed or distorted plant parts (especially newer foliage) and necrosis usually seen on the tips or margins of leaves.

Control Measures

Il n’y a pas de mesures de contrôle; par conséquent, l’accent devrait être mis sur la prévention.

Toujours lire les étiquettes des produits et travailler conformément à ce qui est écrit sur l’étiquette du produit. Ne pas pulvériser par vent fort. Ne mélangez jamais deux substances à moins que cela ne soit écrit sur l’étiquette du produit. Commencez par vérifier les produits chimiques sur une petite quantité de plantes, puis attendez au moins 24 heures pour surveiller les plantes afin de détecter tout effet indésirable. Cela devrait être fait avant d’appliquer le / les produit (s) chimique (s) sur la majorité des plantes.

Il est préférable de pulvériser la nuit ou tôt le matin. Ne pas pulvériser lorsque la température est supérieure à 32 degrés Celsius; l’efficacité des produits chimiques diminue lorsque la température augmente.

Caution and careful notice should be taken when using any plant protection products (insecticides, fungicides, and herbicides). It is the grower’s sole responsibility to keep track of the legal uses and permissions with respect to the laws in their country and destination markets. Always read the instructions written on labels, and in a case of contradiction, work in accordance to the product label. Keep in mind that information written on the label usually applies to local markets. Pest control products intended for organic farming are generally considered to be less effective in comparison to conventional products. When dealing with organic, biologic, and to some extent a small number of conventional chemical products, a complete eradication of a pest or disease will often require several iterations of a specific treatment or combination of treatments.

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