Fungicide Spraying for Celery Seedlings

1、Assessment of Carbendazim Residues and Safety in Celery

In this study, we examined the dissipation and residual amounts of carbendazim in celery and soil under different cultivation methods when using the suggested dose and ten times of that and the bioconcentration factor of carbendazim for celery.

Assessment of Carbendazim Residues and Safety in Celery

2、Seed Treatment With Systemic Fungicides: Time for Review

Pre-sowing seed treatment with systemic fungicides is a firmly entrenched practice for most agricultural crops worldwide. The treatment is intended to protect the crop against seed- and soil-borne diseases.

Seed Treatment With Systemic Fungicides: Time for Review

3、Effects of Exogenous 24

The results show that leaf spraying with an appropriate concentration of 24-EBL can facilitate chlorophyll synthesis by promoting chlorophyll synthesis and cycling-related gene expression levels and increase chlorophyll content in the leaves of celery.

Celery flavonoid

This study assesses the antifungal efficacy of celery flavonoid-rich extract (CFRE) against cucumber powdery mildew, caused by Podosphaera fusca, in a controlled greenhouse setting.

Managing root rot on celery seedlings in the greenhouse

A MSU greenhouse trial tested fungicide drenches (Table 1) for control of Pythium root rot on celery seedlings. Healthy, five- to six-week-old celery seedlings cultivar CR-1 were inoculated with the Pythium root rot pathogen immediately prior to transplanting into pots.

Management of celery leaf spot

In this, before the celery canopy is large enough to close over the rows, fungicide is applied when leaves have been wet for more than 12 hours. Once the canopy closes, regular fungicide applications at 7 to 10 day intervals are recommended.

(PDF) Seed Treatment With Systemic Fungicides

Pre-sowing seed treatment with systemic fungicides is a firmly entrenched practice for most agricultural crops worldwide. The treatment is intended to protect the crop against seed- and...

Seed Treatments, In

Depending on the package, fungicides from groups 3, 4, 7, 11, and/or 12 are most commonly applied to seed. Data from LSU AgCenter field trials indicate slight increases in stand or emergence; however, seed-applied fungicides very rarely provide economic benefit in these crops.

Less spraying for celery leaf blight

Applying fungicide at these times rather than on a weekly basis could mean fewer sprays. Weather stations (Figure 2) in celery crops are used to transmit temperature and leaf wetness readings for determining the Disease Severity Value (DSV).

Guide to Pest Management in Vegetable Crops

Best control of quackgrass is obtained when these herbicides are applied in the fall. Apply in minimum spray volume of 100 L/ha. Refer to label for target weeds, buffer zones and rates. Use high flow rate nozzles to apply the highest spray volume.

Celery (Apium graveolens) is a commonly cultivated vegetable. During its growth, environmental and climatic factors can expose it to various diseases. Rational use of fungicides is crucial to ensuring healthy celery development.

I. Diseases in Celery Seedlings and Control Measures

1. Downy Mildew

Downy mildew is one of the most common diseases during the celery seedling stage, primarily affecting leaves and stems. Caused by fungi, it appears as white or yellowish mold on leaves, severely leading to leaf necrosis. Control measures include:

Resistant Varieties: Plant disease-resistant celery cultivars.
Rational Fertilization: Use organic and compound fertilizers to enhance plant resistance. Avoid excessive nitrogen to prevent weak growth.
Ventilation: Maintain good field ventilation to reduce humidity.
Remove Infected Leaves: Promptly detach diseased leaves to curb pathogen spread.
Chemical Control: Spray targeted fungicides (e.g., thiophanate-methyl, carbendazim) early. Ensure product safety and efficacy to avoid damage.

2. Grey Mold (Botrytis cinerea)

Grey mold affects leaves and stems, showing gray mold layers and severe leaf death. Control measures include:

Resistant Varieties: Prioritize disease-resistant cultivars.
Rational Fertilization: Balanced use of organic/compound fertilizers; limit nitrogen.
Ventilation: Reduce humidity through airflow.
Remove Infected Leaves: Minimize pathogen spread.
Chemical Control: Apply fungicides like difenoconazole or azoxystrobin early. Choose celery-safe products.

3. Black Leaf Spot

Black leaf spot targets leaves and stems, causing dark spots and leaf death. Control measures include:

Resistant Varieties: Select resistant cultivars.
Rational Fertilization: Enhance immunity with balanced fertilizers.
Ventilation: Lower humidity via air circulation.
Remove Infected Leaves: Prevent spread.
Chemical Control: Use tebuconazole or prochloraz. Prioritize safety and effectiveness.

II. Fungicide Spraying Techniques for Celery Seedlings

Timing: Spray at the first sign of disease, adjusted for local climate.
Uniform Application: Cover all areas, especially leaf undersides, using sprayers. Avoid over-concentration.
Appropriate Dosage: Follow label instructions to prevent overuse.
Alternate Fungicides: Rotate products to reduce pathogen resistance.
Safety Measures: Wear masks, gloves, and ensure ventilation to protect plants and workers.

Disease management during the celery seedling stage relies on rational fungicide use. Select fungicides based on pathogen type and local conditions, prioritizing safety and efficacy. Proper spraying techniques maximize control while minimizing risks to plants and humans.

This translation maintains technical accuracy while adapting terminology for clarity in agricultural contexts. Let me know if further refinements are needed!