Common diseases and control of balsam pear

Balsam pear is a kind of vegetable that many people like and hate. It tastes bitter and is widely cultivated in China. Balsam pear has the effect of clearing heat and detoxification, nourishing blood and reducing blood pressure. it is also beneficial to the treatment of diseases such as heatstroke and diarrhea. However, in the process of planting balsam pear, many diseases will occur. Today, we will introduce the diseases and control methods of balsam pear.

1. Sudden collapse disease

Quenching disease is a fungal disease caused by bacteria, which mainly occurs when balsam pear seedlings are unearthed. At the beginning of the disease, the seedlings will produce water stains, then turn brown, and lodge when the leaves have not withered. The main reason for this disease is that the temperature of the soil is too low and the humidity is too high, which usually has the highest incidence at night or in rainy weather. The soil can be disinfected with pentachloronitrobenzene before sowing, and then sprayed with aldicarb hydrochloride when the seedlings are unearthed. The main thing is to control the temperature and humidity of the ground.

2. Powdery mildew

Powdery mildew, like sudden collapse, is a fungal disease caused by bacteria. Balsam pear can occur at any stage of growth, and the damage to leaves is more serious. In the initial stage of infection, the leaves will produce some small white spots, and the spots will gradually spread and connect to form a whole patch. When it is more serious, the whole leaf will turn white, until the later stage, the leaf will turn from white to gray, resulting in withering. It is also mainly due to improper control of the wet temperature between the ground. Sulfur suspension and other agents can be sprayed for pre-control, about once a week, lasting about three weeks. Mainly to prevent, the leaf should be sprayed evenly.

III. Anthrax

Anthrax is caused by the spread of residual germs in soil and remains through Rain Water, insects and other substances. The incidence of anthrax is highest when the humidity is more than 90% and above 25 degrees, and it will increase the incidence of anthrax under the condition of poor drainage and excessive density. Anthracnose is harmful to whole crops, forming irregular circles that produce a yellow ring on the outside. It is necessary to remove the diseased plants and remnants in the garden in time, and strengthen the management of fertilizer and water. Pay attention to planting density and drainage, can be sprayed with methyl topiramate wettable powder for pre-control, once a week for three weeks.

Fusarium wilt

Fusarium wilt is one of the most harmful diseases of all melons. It can invade any stage of the growing period, but it has the highest incidence when it blossoms and bears fruit. The diseased plant begins to occur on the leaves of some parts of the plant, which are withered, yellow and withered, suspected of lack of water. But the leaves will recover sooner or later, and then the number of diseased leaves will increase, resulting in the death of the whole plant. In order to control Fusarium wilt, it is best not to carry out continuous cropping. Clean up the sick and disabled bodies and disinfect the soil in time. Use pentachloronitrobenzene and other chemicals for prevention and control once a week for three weeks

The above four are common diseases of balsam pear, in fact, the main cause is due to improper control of temperature and humidity in the garden or planting density and other reasons. It is necessary to clean up the sick and disabled bodies in the garden in time, disinfect the garden, and pay attention to the hygiene in the garden. This can also reduce the incidence of these diseases.