Welcome to PhotosynQ! Prefer video tutorials? Go to PhotosynQ’s youtube channel for full tutorial videos to get you up and running faster than a bamboo shoot on a sunny day! Step 1: Collect Data I have a Android smartphone (Honeycomb 3.0 or better) Find and install the PhotosynQ app in the google play store. Complete the tutorial which begins when app starts. I have a PC, Mac, or Linux and Google Chrome browser Install Google Chrome. Then download the PhotosynQ Chrome app from: Open the app, and complete the tutorial. Step 2: Explore Data In your computer’s web browser, go to and select the project you contributed to. Click on the ‘dashboard’ link on the left hand side of the project page. Be patient, mammal - it may take some time for the data to load! Once loaded, you can map the data, compare results on the X and Y axis, view the distributions of results, and more! For a full tutorial of the online data analysis tool, go to: Step 3: Contribute to Science! Now that you understand the basic idea, you can find a project to take part in at You can collect data, analyze results, and add to the discussion on the comments thread. Or you can create your own project at Step 4: Keep up-to-date To keep up with new developments, features, and PhotosynQ news, sign up to the email list at (right hand side of the page). NPQ and NPQt comparison Midnight Madness (Fv/Fm around the world) ...

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ameliajonex "for the agriculture its really need the fertile soil according to the crop condition and weather to encase the productivity and and urocotelic subs..." | Read more » over 3 years ago
mathew "real cool! " | Read more » over 7 years ago
jtraub "Ah, my apologies for getting to this conversation late. I should qualify what I'm about to say by stating that I'm no expert in chlorophyll fluores..." | Read more » over 8 years ago
gbathree "No worries - this is an important discussion and you're right, it's not at all easy to measure. We've spent a lot of time helping people (mostly b..." | Read more » over 8 years ago
khufkens "@gbathree, this wasn't as much a critique on the technique, but personal experience has taught me that you have to be really picky on how you alloc..." | Read more » over 8 years ago
khufkens "As far as I understood is the value light use efficiency value (LUE / phi2) you measure by using PAM fluorescence (LUEpam) conceptually the same as..." | Read more » over 8 years ago
gbathree "Well... if you're working on maximum photosynthetic capacity. But that's not necessarily the same thing as actual capacity during the day (phi2). ..." | Read more » over 8 years ago
khufkens "I'm confused by the goal of the experiment. Would just measuring Fv/Fm / or related values on a dark adapted leave not be quicker and more accurate..." | Read more » over 8 years ago
gbathree "Nice! Yes, light intensity and phi2 are linked at the hip, and changes in light intensity will produced changes in phi2 on the millisecond timesca..." | Read more » over 8 years ago
cfastie "Dustin, this is a great question. I haven't used a PhotosynQ , but it should be good at making a few different measurements that provide a robust i..." | Read more » almost 9 years ago
btbonval "If PhotosynQ people want to make their own wiki, they're free to grab the content from your note here or the wiki page I made from your note. Every..." | Read more » almost 9 years ago
btbonval "Stripped out all the juicy plant bits and spectral mumbo jumbo. added it here:" | Read more » almost 9 years ago
cfastie "I agree that this material is more appropriate for a wiki than a note, but I wanted people to see it. Such a wiki should be built by somebody at P..." | Read more » almost 9 years ago
btbonval "Apologies if I was being pedantic. Now that I think about it, cleaning up the note isn't a great solution. Instead of changing this note, the perti..." | Read more » almost 9 years ago
nedhorning "Good stuff. From my perspective NDVI is good for mapping vegetation and can provide some indication of overall health and is good at differentiatin..." | Read more » almost 9 years ago
cfastie "Thanks Bryan. You're right that NDVI rose to fame as a satellite and airborne tool, and has only recently been used more widely at close range. It ..." | Read more » almost 9 years ago
btbonval "Woops I skipped the part at the top where it seems to suggest in advertisement language that the PhotosynQ gives you this and more! Any chance you..." | Read more » almost 9 years ago
btbonval "This is a really good collection of information about photosynthesis and spectral analysis. My understanding was that NDVI has largely been used f..." | Read more » almost 9 years ago
cfastie "Thanks Greg, that helps a lot. I'm just getting a feeling for how complicated the fluorescence measurements are. It looks like fluorescence will be..." | Read more » almost 9 years ago
gbathree "Phew - Ok, talked with Dave about it to confirm about the reflectance contribution piece, here's my response: First, yes I think it is misleading ..." | Read more » almost 9 years ago
cfastie "Greg, that’s very exciting progress. Your new summary of all the measurements that can be taken with a MultispeQ is excellent. It’s the best descri..." | Read more » almost 9 years ago