How to identify Drug damage of Flowers

If excessive pesticide is used in flower cultivation, it will cause drug damage to flowers, and the correct identification of drug damage is of great significance to the production of flowers. The main symptoms of drug damage are:

The main results are as follows: (1) when the concentration of spot spray is too high, the damage mainly occurs on the leaf, stem or fruit epidermis. The common ones are brown spot, macula, reticular spot and so on. The distribution of drug spots is irregular, light in some places and heavy in some places.

(2) the deformities caused by drug damage can occur in the stems, leaves and roots of flowers, such as rolled leaves, clumps, swollen roots, deformed fruits and so on. When fumigating soil with chemical agents, the chemical harm often causes root deformities, some root neck swelling into olive-shaped, no lateral root and mycorrhizal; sometimes the formation of truncated seedlings, no main root, lateral root is underdeveloped, into chicken claw shape.

(3) the wilt caused by Fusarium oxysporum often showed symptoms in the whole plant, which was mostly caused by herbicides. The wilt caused by drug damage has no disease center, and the occurrence process is slow, first yellowing, then dead seedlings.