What to do if the onion root is easily pulled up

Answer: The onion may be affected by Fusarium wilt. The pathogenic bacteria invade from the root wound or root tip cells, and the disease occurs most seriously when the daily average temperature rises to 24-28 ℃, and the relative humidity is more than 80%, especially when the soil moisture content is high. The disease develops rapidly. Low-lying land, lack of fertilizer, and lack of phosphorus and potassium fertilizer, the soil is sticky, the soil is acidic and the disease is serious when unripe fertilizer is applied.

When a diseased plant is found in the field, it is immediately irrigated with a chemical solution for prevention and control. 50% carbendazim wettable powder 500 times solution, or 60% Fangbaobao wettable powder 600 times solution, or 5% bacteriotoxic water solution 400 times solution for irrigation , Each plant is irrigated with 100 ml of diluted liquid medicine, and then irrigated once a week.

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Laser Rangefinder Sensor

Laser rangefinder module, which has two application, one is mainly designed for long distance range finder, another is for secondary development industrial Laser Distance Sensor, which support ttl/usb/rs232/rs485 adapter output data.

With different range measuring program, JRT laser measure tools module, can satisfy customers` different requirements, 200m, 300m, 500m, 1000m, 1200m, 1500m, 3000m.

We have been in this line for 10 years, with a strong R&D ability and hard working, we are now a leading supplier of Laser Distance Meter modules in China.

Product Specifications:

Measuring Range (without Reflection)	5-500m/5-1000m/5-1500m/5-3000m
Measuring Accuracy	±0.5m~±1 m
Laser Class	Class 2
Laser Type	905nm
Magnification	6X
Battery type	CR2-3V
Operating Temperature	-10-50 ℃ (14-122 ℉ )
Size	28*69*60mm/TC25-43*φ25mm
Weight	About 15g
Operating Temperature	-10-50 ℃ (14-122 ℉ )
Storage Temperature	-25~60 ℃ (-13~140 ℉)

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