Celery black rot is a fungal disease. The fungus often lies dormant in the soil and infects the celery stalks from the base, causing the heart to rot. So what are the effective treatments for celery black rot? Let's find out below.
1. Metalaxyl-M
Metalaxyl-Mothion is a low-toxicity compound fungicide formulated by mixing metalaxyl with cymoxanil or cymoxanil hydrochloride in a certain proportion. It is specifically used to control diseases caused by lower fungi. For control, a mixture of 25% metalaxyl-Mothion and 70% thiophanate-methyl can be used to effectively control celery black rot.
2. Azoxystrobin and chlorothalonil
The combination of azoxystrobin and chlorothalonil has been widely used in recent years. It is a very broad-spectrum fungicidal combination that is effective against both higher and lower fungi. For control, a 32.5% azoxystrobin-chlorothalonil suspension can be sprayed to help control the development of celery black rot.
3. Copper hydrogen·Zinc thiram
Copper hydroxide and zinc thiram are a compound of copper hydroxide and zinc thiram, which have good inhibitory and preventive effects against diseases caused by various fungi. For control, 64% copper hydroxide and zinc thiram wettable powder can be sprayed, which also helps reduce the occurrence of celery black rot.
4. Oxadiazon·Manganese Zinc
Oxadiazon·Mancozeb is a broad-spectrum protective compound fungicide composed of oxadiazon and mancozeb. This compound formulation is effective against a variety of fungal diseases, such as anthracnose, black rot, and blight. For control, a 1000-fold dilution of 68.75% oxadiazon·Mancozeb water-dispersible granules can be sprayed.
5. Captan
Captan, also known as Kappton, is a traditional multi-site organosulfur fungicide that can control a variety of high and low fungal diseases. For control, a 400-600 times dilution of 50% captan wettable powder can be diluted with water and sprayed, once every 7-10 days depending on the severity of the disease. This helps control celery black rot.
