Photosynthetically Active Radiation (PAR) is a critical component for plant productivity. It defines the usable portion of sunlight that drives photosynthesis, impacting plant health, development, and yield potential.
Photosynthetically Active Radiation: Measurement and Modeling
Comprehensive overview of PAR measurement techniques and modeling approaches in plant sciences.
The Significance of PAR and PPFD in Agriculture
Explains the importance of PAR and PPFD metrics in optimizing plant growth and development.
PAR Light Measurement
Discusses methods for measuring PAR and its role in balancing plant energy inputs.
Measuring Daily Light Integral in a Greenhouse
Guide on calculating daily light integral (DLI) using PAR measurements for greenhouse crops.
Understanding PAR, PPF & PPFD in LED Grow Lighting
Details the differences between PAR, PPF, and PPFD, and their relevance in horticultural lighting.
Deploying calibrated quantum sensors (e.g., Apogee MQ-500, LI-COR LI-190R) at multiple vertical and horizontal points to visualize real-time PAR penetration in multi-layer crops.
Data-driven canopy light maps help identify shading bottlenecks and optimize pruning, training, or plant spacing strategies.
Integrating PAR sensors into automated movable shade systems or dynamic nets.
The objective is to maintain consistent Daily Light Integral (DLI) within target bands, adapting shading based on hourly PAR fluctuations to prevent overexposure or under-lighting.
Analyzing how shading materials (e.g., black, pearl, red aluminet nets) selectively alter PAR intensity and spectral composition (R:FR ratio shifts).
Assessing impacts on photosynthetic rate, flowering induction, and morphogenesis in crops under modified light quality.
Designing and trialing canopy structures (e.g., optimized leaf angles, plant spacing, multi-tier layouts) to maximize usable PAR interception without creating excessive self-shading.
Improves light-use efficiency (LUE) and boosts biomass accumulation per unit light.