Mancozeb
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Mancozeb
Mancozeb is a broad-spectrum contact fungicide from the dithiocarbamate group. It works by disrupting multiple enzyme systems in fungal cells. Unlike systemic fungicides, Mancozeb acts on direct contact and does not move through the plant’s vascular system. Contact fungicides are generally considered safer and healthier than systemic options, making them a popular choice.
It effectively controls fungal diseases on vegetables (tomatoes, potatoes, beans), fruit crops (citrus, stone fruits, grapes), ornamentals, turf, and field crops. Common diseases managed include early and late blight, downy mildew, black spot, rust, anthracnose, and scab. Always read the product label to ensure it is suitable for your specific situation.
Searles Mancozeb comes in a convenient 750 g/kg pack and is a popular choice. For best results, it is recommended to use a spreading/wetting agent such as Spredmax to help the product adhere to plants. This formulation controls a broad range of 9 common fungal and bacterial diseases. For even wider protection, consider Searles Mancozeb Plus, which combines sulphur and mancozeb to control up to 16 common fungal and bacterial diseases.
Bulk & Value Options: For larger gardens or better value, consider Barmac Mancozeb DG 2 kg, which costs approximately $7.60 per 200 g. For the best value, Kendon Mancozeb WG 2 kg is also available.
Frequently Asked Questions:
Q. What is Mancozeb and how does it work as a fungicide?
A. Mancozeb is a broad-spectrum contact fungicide belonging to the dithiocarbamate group, specifically classified as Group M3 for resistance management. It works by interfering with multiple enzyme systems in fungal cells, disrupting cellular processes and preventing spore germination. Unlike systemic fungicides, Mancozeb provides protective action on plant surfaces where it's applied.
Q. Is Mancozeb a systemic or contact fungicide?
A. Mancozeb is a contact fungicide, not systemic. This means it works by direct contact with fungal spores and mycelium on treated plant surfaces, providing protective action rather than moving through the plant's vascular system.
Q. What is the active ingredient in Kendon Mancozeb, and how much should I use?
A. Mancozeb contains manganese and zinc as a coordination complex with ethylene bisdithiocarbamate. Application rates typically range from 150-200g per 100L for dilute sprays, or 1.7-6kg per hectare, depending on crop and disease.
Q. What crops and diseases can I treat with Mancozeb fungicide?
A. Mancozeb effectively controls fungal diseases on vegetables (tomatoes, potatoes, beans), fruit crops (citrus, stone fruit, grapes), ornamentals, turf, and field crops. Common diseases controlled include early and late blight, downy mildew, black spot, rust, anthracnose, and scab.
Q. What should I know about compatibility and timing when using Mancozeb fungicide?
A. Mancozeb has wide compatibility with many agricultural chemicals, but it is not compatible with Bordeaux mixture, lime sulphur, acids, or oxidising agents. Always check the product label for specific compatibility information. Treatment should begin prior to disease infection and continue until the threat of disease has passed to ensure optimal control.
Q. What is the withholding period for Mancozeb on different crops?
A. Withholding periods vary by crop: 7 days for beans, celery, cole crops, and cucurbits; 14 days for tomatoes, fruit crops, and ornamentals. Always consult the product label for specific crop requirements, as these are APVMA-registered conditions.
Q Is Mancozeb approved for organic farming?
A. Mancozeb breaks down rapidly in soil and water to natural products without bioaccumulation. However, organic certification requirements vary by certifying body, so check with your organic certifier regarding approved fungicide lists.
Q. What safety and storage precautions are important when using Mancozeb fungicide?
A. Mancozeb is dangerous to fish; avoid contaminating streams, rivers, and waterways with the chemical or used containers. Store the product in its original container in a dry, well-ventilated area away from fire and sparks. It may cause skin irritation on repeated exposure, so always wear protective clothing and read the label carefully before use.
Disclaimer: Please only use this product as per instructions on the product packaging. Do not depend on information on this page that may have errors or be outdated.
