Symptoms of grape white peony disease and control methods

1 The symptoms and conditions of grape blight

The disease mainly damages the root and neck of the grapes. In the early stage of the disease, the epidermis appears water-soaked and irregularly brown spots. Then, the surface of the mycelium grows white mesh with silky sheen, and gradually increases until it covers the entire root. The neck finally spreads to the soil surface. The victim's root and neck cortex rots, and it can even spread to the main vine. The degree of decay can sometimes reach deep into the xylem. Later on the surface of the diseased tissue and nearby soil, many sclerotia brown in size like rapeseed can be grown. The disease also harms the ear near the ground, causing fruit rot, and the surface of the diseased grain also produces a white layer of mycelium. The soil is heavy, low-lying and high-temperature, humid conditions are conducive to disease.

2 grape white peony disease prevention methods:

2.1 disinfection of seedlings. The agent is thiophanate-methyl or carbendazim or lime water, and the seedlings are soaked for 10 to 30 minutes before planting.

2.2 Strengthen management. In the middle of May, 50% carbendazim and 50% phoxim solution were applied in combination with control root-knot nematodes for two consecutive times at 7-day intervals. In August and November, do not apply 250 times each of the same amount of Bordeaux mixture, which can effectively control the spread of the disease.

2.3 Excavate the cut off ditch and block the ward. At the periphery of the diseased plant, cut off the ditch and block the ward.

2.4 After the symptoms appear in the above-ground part of the tree, the soil around the main root of the trunk is opened and dried to suppress the disease.

2.5 treatment of diseased trees. The lesions were scraped, the wounds were disinfected with 1% copper sulfate solution, and Bordeaux fluid was applied.

Industrial Laser Distance Sensor

Industrial Laser Distance Sensor, we also call it secondary development laser distance module, which support TTL level and CMOS. The laser range sensor can be widely used in professional surveying, mapping, construction, robots, hunting arrows, industrial monitoring and automated measurement applications in electricity, transportation, etc. Our laser distance module supports data communication with RS232, USB with a simple adapter. The results of laser distance sensor can be evaluated with Arduino. We are always looking ahead, hoping we can make every measurement simple in life!

Parameters of M703A:

Laser Distance RS232,Arduino Distance Module,Laser Module RS232

Chengdu JRT Meter Technology Co., Ltd , https://www.rangesensors.com