Knowledge on pest and disease control of cat's eye arrowroot

Disease control of cat's eye arrowroot

Sclerotium rolfsii

The incidence of white rot is high. When the plant is infected with white rot, the stems and leaves close to the soil will rot and change color, and radiating white pathogenic bacteria will appear. The infection then expands and turns dark brown, spreading throughout the pot and eventually causing the death of the plant. It should be noted that July and August are the peak periods for white rot, and careful attention should be paid to the growth of the plants. If infected branches and leaves are found, remove them immediately to prevent their spread.

Prevention and control methods: White rot often occurs when the soil is too moist or the soil is poor and lacks nutrients. Therefore, to prevent and control it is necessary to first ensure that the soil moisture is moderate and there is sufficient fertilizer. Secondly, the plants should be placed in a ventilated and cool place, and the branches and leaves should be pruned regularly to avoid being too dense, which is prone to bacterial infection. If diseased plants are found, they should be cleaned thoroughly and the soil should be replaced.

Leaf spot

It is often found on leaves and sheaths. When the disease occurs, the reddish-brown spots continue to expand, with no obvious halo around them. Leaf spot disease has no fixed outbreak period and can occur throughout the year, but the probability of occurrence is higher in early autumn, so prevention and control work should be done well. When the disease occurs, a large number of leaves will dry up and die. The infection of diseased plant remains is the source of the initial infection.

Prevention and control methods: Leaf spot may be caused by insufficient fertilizer, so the fertilizer should be increased to enhance disease resistance; secondly, the diseased branches and leaves should be removed in time to eradicate the source of bacteria; spray chlorothalonil wettable powder antibacterial liquid for prevention before the disease occurs.

Pest control of cat's eye arrowroot

Cat's-eye arrowroot attacked by scale insects

Scale pests often appear on the edges or surfaces of leaves, either on the front or back. The back is especially difficult to find, so more attention should be paid. Scale insects suck plant sap. If the infestation is relatively light, the leaves will turn yellow and fall off, affecting the beauty of the plant. In severe cases, the leaves will dry up, the plants will become diseased and even die; in addition, the wounds caused by scale insect bites are more sensitive and easy to be infected by viruses, so they must be treated in time. The most annoying thing is that scale insects have a strong reproductive capacity. Once discovered, they must be eradicated in time, otherwise they will be difficult to deal with and pesticides must be sprayed if necessary.

Prevention and control methods: Pay attention to plant ventilation and ensure that it grows in a relatively cool place. If insect infestation has occurred, you can spray pesticides such as DDT. Spray once every other week, and spray 2-3 times continuously.

Cat's-eye arrowroot attacked by red spider mites

Red spider mite pests are relatively common. They absorb nutrients from the leaves, causing nutritional imbalance in the plants and affecting their normal growth and development. This type of pest is often related to an overly dry environment and high temperatures, so extra caution should be taken in the summer.

Prevention and control methods: Keep the environment ventilated to avoid easy infection by pathogens; red spider mites are difficult to reproduce when exposed to water, so spraying water on the leaves from time to time to maintain humidity can effectively prevent the growth of red spider mites. If you have already encountered the disease, you can use trichloronate emulsifiable concentrate to spray and kill it. It should be noted that because the pesticide causes almost no damage to insect eggs, you need to wait until the eggs hatch before spraying and killing the larvae to completely eliminate them.