How to determine the environmental status of eggplant seedlings

When the leaves of the seedlings are unfolded, the nitrogen fertilizer is sufficient, the night temperature is slightly lower, and the leaves are darker in color; the nitrogen fertilizer is less, the night temperature is high, and when the light is insufficient, the leaves are light in color. The night temperature is too high, the angle between the petiole and the stem is small, and the tip of the two upright leaves hangs down. The tip of the blade is blunt, indicating that the ambient temperature is high; the tip of the blade is sharp, indicating that the ambient temperature is low. Excessive nitrogen fertilizer, leaf folds; nitrogen deficiency, leaves no wrinkles and light colors. Thin leaves indicate insufficient light. If the soil is too wet, eggplant seedlings will have symptoms of magnesium deficiency, and they will turn yellow and lose green near the veins of the leaves, especially around the main veins. If calcium deficiency, or due to excess nitrogen fertilizer caused by excess manganese, the leaf reticular veins will brown, appear "rust" leaves.

Small 2D LiDAR Sensor

IT02S, is JRT new product in the early 2019, which is a single-point LiDAR sensor, also called tof distance sensor. With a micro size of 46x17x7mm, customers can widely use in many Laser Measurement Solutions. The lidar distance sensor can measure 12m short-range with high frequency up to 100hz. It's great for Unmanned Aerial Systems. If you need us send you data sheet and spec for this products, offering sample as well, pls tell us, thank you.

IT02S Mini Tof Sensor Module Diagram
IT02S Mini Tof Sensor Module Diagram
Parameters of IT02S:

Accuracy

+/-8cm@ 0.1~3.5m

Measuring Unit

cm

Measuring Range (without Reflection)

0.1-12m

Measuring Time

0.1~3 seconds

Measuring Frequency

100 Hz

Laser Class

Class II

Laser Type

650nm, <1mw, red

Weight

About 5g

Voltage

DC2.5V~+3.5V

Serial Level

TTL 3.3V

Size

46*17*7mm

Operating Temperature

0-40 ℃ (32-104 ℉ )

Storage Temperature

-25~60 ℃ (-13~140 ℉)


IT02S – the High performance-price ratio measurement solution
* low power consumption of single transmit and single receive
* small size: 46*17*7mm
* low cost
* proffessional techinical support

2D Laser Distance Sensor,2D Lidar Sensors,Tof Lidar Distance Sensor, Flight Distance Sensor

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