The soil lacks boron. This is the main cause of cracking of the petiole. Mushi 0.5 to 1 kg of borax is used as the base fertilizer. If a slight cracking handle is found, 0.2% to 0.5% borax aqueous solution can be used for foliar spray, or 0.25% borax aqueous solution can be used for root irrigating. Improper sowing time or less nitrogen fertilizer. Excessive planting of late autumn plants is too late, coupled with insufficient nitrogen fertilizer, the plant growth potential is poor, and the harvesting season cannot reach the harvesting standard. In the case of delayed harvesting, it is susceptible to low temperature and cold wave invasion, petiole softening, and hollowing out. phenomenon. Therefore, localities should determine suitable sowing dates based on local climatic conditions and cultivation facilities, and strengthen fertilizer and water management before and during growth to provide sufficient nitrogen fertilizer. Chengdu JRT is a world leader in the design and manufacture of highly accurate, precise and digital and analogue laser measurement sensors, including serial laser distance transducer,usb laser distance module,distance module ttl laser sensor rs232/RS485/Bluetooth. These Laser Distance Sensor products are widely used in many smart industrial precise measurement soluitons: robot,crane,etc. This laser distance measure technology, combined with the high speed, 1mm high resolution and accurate measurement, specially the micro laser sensor(41*17*7mm),will confidently and accurately solve your precision measurement problem. Laser Distance Measurement,Laser Measurement Sensors,Laser Distance Measurement,Smart Measure Sensor Chengdu JRT Meter Technology Co., Ltd , https://www.accuracysensor.com
The plants are frozen. Celery is not cold. When the temperature is below 0 °C or 0 °C prone to frost symptoms. When the plants are severely chilled, the structure of the petiole is destroyed. After the temperature rises, the tissue cannot be recovered and the cell gap increases, resulting in hollow. Therefore, in the cultivation process should be prevented from freezing, insulation measures should be used to avoid exposure to winter.
Variety degradation. Celery and common celery are prone to natural hybridization. Therefore, celery must be strictly isolated from other celery varieties when seedlings are preserved. At the same time, in the seed production, some hollow plants should be prevented from being used for seeding, so as to avoid increasing the proportion of hollow plants.
How to do celery hollow stem cracking
During the growth of celery, especially in the middle and late stages, white spots, hollows, or horizontal and vertical cracking of the petioles often appear on the petiole cross-section. The causes and solutions are as follows.