How to treat money tree diseases? Detailed control methods

The money tree, also known as Zamioculcas zamiifolia, is an indoor foliage plant that helps purify indoor air. It prefers warm, slightly dry, semi-shaded environments with small annual average temperature fluctuations. So, how do you treat money tree diseases?

1. Brown spot disease

1. Symptoms: This disease mainly harms the leaves of the money tree. When it occurs, small nearly round spots appear on the leaves, grayish brown in color, with slightly darker edges. Later, the lesions gradually expand and merge together, causing the leaves to wither.

2. Control methods: Promptly remove and destroy diseased leaves. In the early stage of the disease, spray the leaves with chlorothalonil or carbendazim. Spray once every 10 days, and 3-4 consecutive applications are enough to cure it.

2. Southern blight

1. Symptoms: It mainly harms the rhizomes of the plant. When the disease occurs, water-soaked lesions form on the affected rhizomes. The center of the lesion is slightly sunken, and the edges are more distinct. Later, the surface of the rhizomes becomes covered with white silky mycelium, which spreads to the soil surface. In severe cases, it can cause the entire plant to die.

2. Control methods: Before planting, drench the soil with formalin to disinfect it. In seasons when southern blight occurs frequently, you can drench the roots with thiophanate-methyl solution to prevent the disease. In the early stage of the disease, you can spread lime powder around the potting soil for treatment. Apply once every 15 days, and 2-3 consecutive applications are enough.

3. Stem rot

1. Symptoms: Because mycelium, chlamydospores, or conidia overwinter in the soil, contaminated fertilizer and diseased soil are the main primary infection sources the following year. Conidia produced on diseased stems cause secondary infection and spread via splashing water. Long periods of retained moisture make the disease likely to occur. In hot summers, when soil temperature rises, the pathogen invades and causes damage when the base of the seedling stem is burned by high temperatures. According to observations, seedlings generally begin to develop the disease 10 to 15 days after the plum rain ends, after which the incidence gradually increases, and the disease stops occurring by mid-September.

2. Control methods: When necessary, spray 27% copper hydroxide suspension concentrate at 600 times dilution, or 50% benomyl wettable powder at 1000 times dilution, 50% thiophanate-methyl · sulfur suspension concentrate at 800 times dilution, or 50% chlorothalonil · sulfur (chlorothalonil + sulfur) suspension concentrate at 600 times dilution.

4. Late blight

1. Symptoms: Late blight of the money tree mostly occurs in July and August. Sporangia are produced on diseased parts, and after germination they produce zoospores that spread through wind and rain to cause infection. High temperature, frequent rain, and high humidity are conditions for the epidemic of this disease.

2. Control methods: Carry out preventive treatment before the disease occurs, and promptly spray 27% copper hydroxide suspension concentrate at 600 times dilution or 30% basic copper sulfate suspension concentrate at 300-400 times dilution. At the peak of the disease, spray 72.2% propamocarb aqueous solution at 600-700 times dilution, 58% metalaxyl · mancozeb wettable powder at 500 times dilution, or 64% oxadixyl · mancozeb wettable powder at 500 times dilution.

For money tree diseases, it is necessary to treat the specific disease with the right remedy, and also pay attention to alternating medications to avoid developing resistance.