Clever ways to control beetles on pear trees, making pear growing easier

Pears are one of the most common fruits in our lives, especially in autumn and winter when eating pears is best; pears have the effect of clearing the lungs, and eating pears in autumn and winter has a very good effect on preventing colds and coughs. But for growing friends, fruit tree pest prevention is very important.

Clever control of pear tree beetles when growing pear trees

Beetles on pear trees can be controlled by combining manual capture with chemical control.

1. Taking advantage of the beetles' death-feigning behavior, shake the branches in the early morning or evening to dislodge the beetles from the tree and capture and kill them.

2. In pear orchards where beetles occur severely, in the evening spray the orchard ground and tree canopy with 1500 times dilution of Nongdile, or 1000 times dilution of Lesiben or phoxim, or 2000 times dilution of cyhalothrin, etc., which has a significant effect on controlling beetle damage.

Pear tree growing environment  

1. Temperature conditions: Pear trees like warmth, need relatively high temperatures for growth, and need a certain low temperature during dormancy. The suitable annual average temperature is about 4-12°C for Ussurian pear, about 7-15°C for white pear and European pear, and about 13-21°C for sand pear.  

2. Light conditions: Pear trees are light-loving fruit trees, requiring 1600-1700 hours of sunshine per year. The light compensation point of pear leaves is about 1100 lux, and the light saturation point is about 54000 lux.  

3. Moisture conditions: Pear trees need a relatively large amount of water, with a transpiration coefficient of 284-401, and each square meter of leaf area transpires about 40 grams of water; when it falls below 10 grams, damage can be caused. Ussurian pear, white pear and European pear have poor moisture tolerance, while sand pear has strong moisture tolerance. In sandy loam, when the soil moisture content is 15-20%, it is more suitable for root growth; when it drops to 12%, root growth is inhibited.  

4. Soil conditions: Pear trees have strong adaptability to soil, and sandy loam with deep soil layers, loose texture, good water permeability and water retention, and a low groundwater table is most suitable. They have wide adaptability to soil acidity and alkalinity, and can grow normally within a pH range of 5-8.5, with pH 5.8-7 being most suitable. They also have relatively strong salt and alkali tolerance; when the soil salt content is below 0.2%, growth is normal, but when it reaches above 0.3%, root growth is harmed and growth is obviously poor.

Pear tree pest and disease control measures  

Pests and diseases in pear orchards are also one of the very important aspects. In addition to keeping records of the types of pests and diseases occurring and the damage conditions, as well as files on the types, doses, frequencies and techniques of pesticide use. How to use pesticides reasonably has a great effect on controlling pests and diseases.  

First, apply the right medicine for the disease. Choose the most suitable pesticide variety to control each pest and disease. Different pathogens and insects have different reactions to the toxicity of the same pesticide. In other words, each pesticide has a certain scope and target for control. For example, triadimefon can effectively control pear rust and powdery mildew, but its control effect on other diseases such as scab is very poor. Imidacloprid (Yibianjing) has a significant effect on controlling piercing-sucking mouthpart pests such as aphids and planthoppers, but is ineffective against mites. Deltamethrin (Decis) has good effects on controlling pear fruit moth, aphids, pear psylla, as well as various caterpillars and slug moths, but is ineffective against mites.  

In addition, the sensitivity to pesticides differs at different stages of the disease infection process. When pathogen spores germinate and invade the pear tree, they are more sensitive to pesticides, and the control effect is better; when the pathogen has already invaded the fruit tree and established a parasitic relationship, and the fungus develops into hyphae, its resistance to pesticides increases, and the control effect becomes poorer. Once fruiting bodies have formed, control becomes even more difficult, such as with pear rust. Therefore, disease control should be applied before disease onset or in the early stage of disease occurrence.

Nutritional value of pears  

The nutritional content per 100 grams of pear is 44 kcal calories, 0.4 grams protein, 0.2 grams fat, 13.3 grams carbohydrates, 3.1 grams dietary fiber, 6 micrograms vitamin A, 33 micrograms carotene, 0.09 milligrams vitamin B, 0.3 milligrams niacin, 6 milligrams vitamin C, 1.34 milligrams vitamin E, 9 milligrams calcium, 14 milligrams phosphorus, 92 milligrams potassium, 2.1 milligrams sodium, 8 milligrams magnesium, 0.5 milligrams iron, 0.46 milligrams zinc, 0.7 micrograms iodine, 1.14 micrograms selenium, 0.62 milligrams copper, 0.07 milligrams manganese.  

1. The flesh of pears contains abundant fruit pulp, organic acids such as glucose and malic acid, and also contains protein, fat, calcium, phosphorus, iron, as well as carotene, vitamin B1, vitamin B2, nicotinic acid, ascorbic acid and other vitamins.  

2. Fresh pears have a water content of 83%, and their calories are slightly lower than apples; their calories mainly come from carbohydrates.

Pears are very rich in nutrition, and their market price is also relatively cheap, so pears are deeply loved by everyone. But if fruit growers want to increase pear yields, pest prevention and treatment are both very important.