What pesticide works well to control leaf curl in eggplant
During the growth period, eggplant may develop yellowing leaves due to factors such as nutrient deficiency, excessively high temperatures, pests and diseases. So what pesticide should be sprayed for eggplant leaf curl?
1. What pesticide should be sprayed for eggplant leaf curl?
For eggplant leaf curl, pesticides such as pirimicarb wettable powder, buprofezin emulsifiable concentrate, bifenthrin emulsifiable concentrate, propargite emulsifiable concentrate, abamectin emulsifiable concentrate or chinomethionat emulsifiable concentrate can be sprayed for control. Generally, at the peak period, an 80% abamectin emulsifiable concentrate 3000-fold solution or a 3% propargite emulsifiable concentrate 2500-fold solution can be diluted with water and sprayed.
2. What causes eggplant leaf curl?
1. Lack of trace elements such as boron fertilizer and calcium fertilizer
Eggplant growth requires certain trace elements. When they are deficient, the plant will show corresponding abnormal reactions. For example, a lack of boron and calcium elements can cause leaf curl. This kind of leaf curl caused by nutrient deficiency is also a physiological disease. Growth imbalance will lead to leaf curl.
2. Excessive temperature and humidity
The late growth stage of eggplant happens to be summer. At this time, when temperatures are high, there is also a lot of rain. Under high temperature and high humidity, pest and disease problems mainly occur, affecting plant growth.
3. Viral disease
After eggplant is infected with viral disease, leaf curl can also occur, but in addition to leaf curl, there are also some wrinkling and plant dwarfing phenomena, which are relatively easy to distinguish and identify.
4. Tea yellow mite
This kind of mite commonly damages eggplant. It mainly gathers at the stem base position to suck the sap of the eggplant, eventually causing spots and yellowing. Severely damaged leaves will curl, mainly curling toward the back of the leaf, which can be identified. Sometimes the leaves become severely twisted and deformed, and sometimes it is also easy to confuse, so careful observation is needed.