| |
|
Entry Date
|
Nick Name
|
Location
|
|
Saturday, June 29, 2019
|
|
Matt D.
|
Connecticut
|
 |
Entry 129 of 210 |
 |
|
|
|
Cloudy Day PAR Reading
What is PAR? PAR (Photosynthetic Active Radiation)- Measures the amount of light (400-700nm) a plant needs to grow.
About the meter… This is a Sun System PAR meter which has a sun and grow light mode. It is very easy to use and automatically turns off to conserve batter power. It reacts/updates fast and allows the grower to get quick readings, however, the downfall is the cost.
Measuring Light Video Lecture: https://www.youtube.com/watch?v=r7yTiUOtSHo
What is the PAR target? The goal is to provide plants with…
PAR of 600 umol/m2/s in 400ppm of CO2
PAR of 900 umol/m2/s in 800ppm of CO2
PAR of 1100 umol/m2/s in 1400ppm of CO2
Link to Data: http://fluence.science/wp-content/uploads/2016/09/High-PPFD-Cultivation-Guide-9.27.16.pdf
*Due to cloud thickness continually changing this also changes the exact amount of PAR. So, many pictures were taken and the median reading is shown in the below images.
Indoor Structure = PAR 288
Outdoor = PAR 440
The Indoor plant is receiving 65.5% of the PAR the outdoor plant which is due to the 6mil greenhouse grade plastic acting as a filter.
|
|
|
