Recently, a user in Haikou City asked a question in the farmer's housekeeper: Expert, what is this bug on the mango?
Agricultural housekeeper experts answered
Liu Fenghua (Member of China Cotton Association, 4th Golden Straw Hat Expert)
Foliar nail hazard spray kung fu, bifenthrin pyrithopridone acetidazin control
Gao Shengtao (Wuji County Agricultural And Guangdong School, good at plant protection technology)
For the leaf nails, bifenthrin spirene ethyl ester thiamethoxazine
Lv Lanhua (Agricultural Bureau of Yanggu County, Shandong Province)
For leaf achillesia pests, it is recommended to use spray control such as alenopherol + bifenerate, thiamethoxam + high-efficiency cypermethrin, and ethyl spirochetate.
Feng Tao (Lu'an City, Anhui Province, Agricultural Technology Station)
Leaf axate pest hazards It is recommended to spray bifenum with alenopherol or thiamethoxam
Lu Pengyuan (Southwest Forestry University, Zhengzhou City, Henan Province, specializing in plant protection technology)
Leaf acetathrin pests consider high-efficiency cypermethrin, perchlorothiamethoxam, bifenthrin, bifenthiazide, bifenthrin thioxazine, can be used
Xinhua Guo (Liaocheng City, Shandong Province, Agronomist, Technical Station Manager)
Foliar nails can be controlled with bifenthrin plus acetamiprid, or highly effective cypermethrin plus pyridazine, cypermethrin plus imidacloprid plus pyridine.
Xu Liqun (Member of China Agricultural Technology Association, Member of China Cotton Association)
Leaf beetle, I don't know if it's a firefly?
Hong Haidi (Chenggong District, Kunming, Yunnan)
Available, highly potent cypermethrin, methylaminoavermectin benzoate, bifenthrin, thiamethoxam, bifenthrin
Farmer Butler Classroom - Mango Long Tarsus Leaf Beetle
Habitual symptoms
First, adult insects bite the young leaves of the new shoots, and when severe, bite the cortex of the young stems of the new shoots or bite the top buds of the young stems and the skin layer of the young fruit, resulting in the normal extraction of the new shoots, and the result is that the mother branches cannot form or less flower spikes, which seriously affects the tree potential and causes a great reduction in yield.
Second, the host longan, lychee, mango, almonds, etc.
Regularity of occurrence
First, in the Nanning region of Guangxi, 1 to 3 generations occur a year, that is, some individuals only complete one generation, and some individuals can complete 3 generations, and the generations seriously overlap. Overwinters as larvae under the soil surface of the disc or as adults in the canopy. Overwintering adults begin to lay eggs in mid-to-late March of the following year, while overwintering larvae generally feather into adults from mid-March to April of the following year and multiply and spawn at the tail. Females have multiple mating and spawning in their lifetime, laying 2 to 80 eggs each time. Females generally lay 290 to 760 eggs in their lifetime, and the eggs are laid in the topsoil under the tree disc, scattered or several grains are gathered. The egg stage is 25 to 29 days from March to April and 17 to 19 days from May to October. The larvae live in the topsoil layer, mostly feeding on fine roots or humus, the larval stage is generally 60 to 70 days, the old mature larvae in the topsoil layer first as a pupal chamber, and then pupate in it, the pre-pupal stage is 4 to 5 days, and the pupal stage is 11 to 15 days. After feathering, the adults rest in the soil for 1 to 2 days and then climb out of the ground, and then fly to the canopy to roost, feed, and copulate.
Second, distributed in Guangdong, Guangxi.
Prevention and control methods
Agricultural control
Combined with the cultivation of weeds in the orchard, the soil of the tree tray is turned over once during the peak of larvae and pupae, worsening its living conditions to reduce the source of insects.
Pharmaceutical control
2.5% cypermethrin microemulsion (moderately toxic) use 20-40 ml/mu spray
40% Chlorpyrifos Micro Emulsion (Moderate Toxicity) use 1500-2000 times liquid spray
300 g/L Chlorpyrrexate thiamethoxine suspension (microtoxic) use 27.8-33.3 ml/mu spray or irrigation
40% carbonitrile. Pyridoxine suspension (moderately toxic) use 24-30 ml / mu spray
20% acetidium pyridine microemulsion (moderately toxic) use 20-25 ml/mu spray
15% pyridine microemulsion (moderately toxic) use 75-100 g/mu spray