The macula can also be said to grow rust spots (also known as leaf spot, erythema) is one of the common diseases that harm the growth of Clivia. The main symptom is that yellow or orange-red dots appear on the back of the blade and in succession. If the control is not timely, the whole blade will soon become riddled with holes and lose the ornamental value.
The cause of leaf spot disease:
1), the nutrient soil is too raw. Horse dung or leaf soil must be fully fermented.
2) The fertilizer is not fermented. Using non-fermented cake fertilizer, oil seed fertilizer or fish gizzard to water the Clivia will cause more microorganisms and bacteria to multiply in the potting soil.
3), pottery soil disinfection is not good. Conditional steaming or frying the soil for disinfection purposes. Or use a sterile spirit to dilute the water and spray it to fully mix and sterilize.
4), lack of nutrition. Purple-brown, yellow-green spots on the leaves are a sign of plant deficiency, especially potassium deficiency.
5), rust spots occur in individual leaves, because the fertilizer directly contacts a certain fleshy root or a fleshy root mechanical contusion.
There is no need to panic when leaf spot disease occurs, and it can be solved by changing the soil. When changing the soil, wash the fleshy roots with water, dry and then put on the basin. If some of the leaves are too bad, just cut them off.
In addition, the anti-bacteria is an organic sulfur-arsenic compound fungicide, which can prevent and cure a variety of true cockroaches, such as white rot, brown spot, and stem spot disease. Use a concentration of 500 to 1000 times of liquid, spray once every half month, and continuously spray 3 to 4 times to collect the effect. Detoxification is particularly toxic and should be used safely. In addition, you can use the magnetized water to water the Clivia all year round, and it can also effectively prevent the diseased leaf spot of Clivia.
This article URL: Causes and prevention methods of yellow dot leaf spot disease in Clivia
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