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Daily Light Integral (DLI) is the amount of PAR (Photosynthetically Active Radiation) that is received by your plants over a 24-hour period. De natural light available will depend on your greenhouse location en the DLI will typically change met the seasons, as the natural day lengths (photoperiods) and light intensities (PPFDs) can vary quite drastically over the course of a year. In many locations, de summer provides long days and high light intensities, whereas in de winter, both the light intensities and the day lengths are lower, resulting in a significant decrease in the DLI. The average monthly DLI for the United States and the Nordic and Baltic countries is shown below.
The DLI requirements vary from crop to crop, but the general rule of thumb is that if these requirements are not met, growth and development will be delayed. By adding supplemental light into your greenhouse, you can increase the light levels and thereby increase the DLI, which is beneficial during these low light periods. Navigating control and gaining a comprehensive understanding of DLI can be challenging. Therefore, a smart control system integrated with sensors, such as helioCORE, can help streamline this process. The system controls de use of supplementary licht to achieve the target Daily Light Integral (DLI). But it also allows you to see graphs van de DLI, showing how much natural light and lamp light has been used to achieve the target DLI. By allowing the draadloos sensors to track the light at crop level throughout the year, you can connect your most successful growth and DLI.
Pic from helioCORE 2.0
Curious about delving deeper into the importance of DLI and the perks associated with implementing a dynamic lighting solution to optimize your crop yields?
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“Understanding the impact of Daily Light Integral”
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Source: Enabling Year-Round Cultivation in the Nordics-Agrivoltaics and Adaptive LED Lighting Control of Daily Light Integral. Marco Hernandez Velasco 2021
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