There is a good way to control litchi fruit borer.
There are several kinds of litchi fruit borer pests, such as litchi special-shaped small roll moth, litchi gray moth, Spodoptera litchi and litchi stem borer, etc. The damage of litchi begins to occur at the beginning of flowering every year, and the damage is the most serious from the end of April to the beginning of June. The larvae first bite through the shell of the young fruit, and then eat into the fruit, feeding on the core, resulting in a large number of fruit drop, resulting in reduced yield and reduced fruit quality, causing great harm. In addition, the larvae also feed on the tender stems of litchi trees, which greatly affects the growth potential of litchi trees. Therefore, it can be said that litchi fruit borer is the most important pest in litchi production. If the litchi fruit borer can be eliminated economically and effectively, the litchi orchard is expected to increase production and income, otherwise it will be empty talk. Due to the strong resistance of these pests and the feeding of fruit kernels, the use of conventional insecticides, such as organophosphorus (trichlorfon, dichlorvos), pyrethroids (trichlorfon, cypermethrin), carbamates and some specific insecticides can not achieve the desired control effect, even the use of expensive imported pesticides is still not ideal. According to our large-scale experiment, the control effect was more than 98% when 7.5% Zongba EC was sprayed with a liquid of 2000 times of spray. In order to add the lime milk made from 1 to 1.5 kilograms of quicklime to the medicine solution, after fully stirring and spraying, the insecticidal effect is better, and it can also ensure that there are no fruit pests within a month. This medicine also treats other litchi pests such as litchi bugs, longan chicken and white moth wax cicada. Debao brand 7.5% Zongba EC is one of the exclusive invention patent products produced by Deqing Xijiang Plant Protection Chemical Plant. The drug is refined from a variety of plants and has the effects of internal absorption, contact and stomach toxic. it is an efficient, low-toxic, economical and safe botanical insecticide with good effect on the control of drug-resistant pests.
- Prev
Litchi should apply flower-promoting fertilizer before and after "Lesser Cold"
(1) increase the application of organic fertilizer to avoid excessive use of chemical fertilizer. According to the fruit yield of 50 kg trees, each plant applied 0.5 kg of calcium superphosphate, 1 kg of potassium sulfate and 10-15 kg of fully retting organic fertilizer, which was applied after flowering, and then manure fertilizer was applied 35 days and 50 days after flowering respectively. (2) timely and moderate irrigation.
- Next
Key points of litchi management in spring
1. Completely clean the garden. First, cut down the over-dense weeds and bushes around the orchard and clear them out of the orchard; secondly, cut off the over-dense branches and pest branches inside and outside the tree hall and clear them out of the orchard; thirdly, spray 600 times solution of trichlorfon +600 times solution of Yunsheng once throughout the orchard to eliminate overwintering eggs and germs. There is no way to get rid of it.
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