Common insect pests of ginger and their control methods

Ginger is one of the indispensable condiments in our daily life, and it is also a very common traditional Chinese medicine. Ginger can benefit the spleen and stomach, remove moisture, relieve cough and expectoration, and can also be sterilized and detoxified, but even if it has germicidal effect, it is inevitably attacked by insect pests in the process of planting. Ginger common pests are ginger borer and ginger maggots, which will cause great losses to ginger. Below, the pro-agricultural network will introduce to you the prevention and control methods of ginger pests.

1. Growth environment of ginger

Ginger is native to the tropical regions of Southeast Asia, coupled with the influence of climate, its growth habits are in line with the growth habits of tropical crops. Ginger likes the warm and humid climate, and is neither cold nor drought tolerant. The most suitable growth temperature is 25 ℃ ~ 28 ℃. Plants will wither if they encounter frost, and the roots and leaves no longer have the ability to germinate, so ginger must be planted in the frost-free period.

Common insect pests of ginger and their control

It has been mentioned earlier that the common pests of ginger are ginger borer and ginger maggots, both of which are mainly aimed at ginger.

1. Ginger borer:

Farmers call it a heart-drilling bug. This kind of insect eats ginger seedlings with larvae so that its leaves are withered and yellow, and when it is serious, it can kill the whole plant. Control methods: kill the adults of ginger borer as soon as possible, catch the larvae, or poison the first or second instar larvae. The larval damage could be seen from the beginning of May, and the peak period was in July and August when the ginger seedlings branched.

Prevention and control methods:

The control effect was better when the larvae were applied in the low instar stage. The larval stage can be killed by spraying 50 g pyrethroid pesticide to water 300--400kg, or by spraying 50 g water 400kg into the heart leaves of ginger seedlings in the evening, and then killing the ginger borer larvae when the solution flows to the stem.

two。 Ginger maggot: ginger maggot is the main pest of ginger during storage. The larva is commonly known as ginger maggot. It also harms ginger planting in the field and affects the yield and quality of ginger to a certain extent. Ginger maggot larvae have hygrotaxis and concealment, and the newly hatched larvae are eaten under the skin of ginger. Those who feed at the "round head" of ginger are covered with silk mesh adhered to insect dung and debris, and the larvae hide in it. The larvae are lively and only epidermis, crude fiber and granular insect feces are left in the injured parts of ginger, which can also cause ginger to rot. Ginger maggot does not have strict requirements on environmental conditions, but it can occur every year. Especially when the temperature of Ching Ming Festival rebounded, the harm intensified. In the field investigation, the victim rate of ginger is 20-25%.

Prevention and control methods:

Select ginger species, find that the killed ginger is eliminated immediately, or soak the seed ginger in 1000 times EC for 5-10 minutes to prevent pests from spreading from the ginger cellar to the field. Before entering the cellar, the ginger cellar should be thoroughly cleaned, the cellar should be sprayed with 1000 times of dichlorvos, several open vials containing dichlorvos solution can also be placed in the ginger pile, and the dichlorvos solution can be heated for fumigation after putting the ginger. In the field, we should pay attention to the selection of ginger, eliminate the injured ginger, soak the seed ginger with 1000 times of dichlorvos for 5 minutes before sowing can kill the pests in the ginger.

The above is the introduction and control of ginger pests brought by the pro-agricultural network. Ginger is a kind of plant that is not suitable for continuous cropping. It usually rotates with rice and legumes. If continuous cropping will cause the above two kinds of insect pests to increase year by year, it will also cause ginger plague, root nematode and other diseases, and the yield will decrease or even lose harvest year by year.