I’m going to do this post a little differently. Although I took notes and took a few pictures, I forgot to update the blog before break. Instead of making two separate posts, I am combining the post I was supposed to do before break and the post for today as side-by-side analyses. (Last week’s pictures are on top and this week’s pictures are on the bottom)
Looking back, it does not seem like the plant grew too much, but I think you can really tell the difference in the last two pictures. Our total plant growth is now a foot and some change. Our roots are around a foot and some change as well and I am really happy with our total growth. The leaves are healthy and green and the roots seem to be doubling in size every time I check the system. Our pH level is still a little high, around 6.7, but I am not going to mess with anything because it seems as though it is not having too much of an effect on our plant’s growth. Our water level was very low, which is understandable. We have not been able to check the system for an entire week. I added more solution and checked the temperature, which is 67.5 degrees; a little cooler than what the plant is used to.
Our plant was becoming too large for the system, so we had to harvest. Here are some photos after the harvest:
Not bad, huh? And we’ve got two, or so, weeks to go and hopefully we’ll be able to contribute to the potluck at the end of the semester.
pH Level: 6.3
After Class (the changes we made to our system, if any):
Growth: total growth is at 7.5″
Water Temperature: 68.3 degrees Fahrenheit
pH Level: 5.8
Here are a few pictures of our plant’s growth:
Here’s a photo of our root growth thus far
In this second image, it might be a little hard to see, but some of the leaves do not look as healthy as I had hoped. Some leaves are drooping and are browning. To the best of my knowledge, they seem to be wilting. So I looked up possible solutions to this and here’s what I got, hopefully some of you can help me out with this. (1) Our temperature may be too high. However, I have never measured a temperature of my solution anywhere close to 8o degrees Fahrenheit, which I have read is a dangerous temperature to reach. (2) Some suggest watering with clear water, and backing off the solution a little bit, possibly diluting it. My fear is that the plant will lose valuable nutrients that the solution has to offer. (3) As far as the browning of the leaves goes, the light may be burning it or our solution is too strong… possibly too acidic? Has anyone else in the area of our plant had similar issues with the browning of the leaves? Then I would consider altering the lighting, but if everyone else seems to be doing fine, then the problem may be our solution.
It’s hard to believe it’s been four weeks now since we’ve started this project. I was hoping to see some more growth, but it looks like our plants are doing pretty good.
Measurements and other Notes:
Total Growth of Plant: 5 inches
Temperature: 69.1 degrees
pH: 6.9 at the beginning of class. Towards the end, we adjusted the levels down to 6.3
I tried that little experiment mentioned in my last post and there is definitely something about the nutrient solution that I am not fond of. I don’t know how often liquids change their pH, but when I left the solution alone last Thursday, I was hoping to come back to a solution that measured 6.0 0r 6.1 pH, but instead, it measured 6.6. My only thinking is that when I first put the pH Down chemical in the gallon of water, I was receiving a lower level in pH because I had just put it all in and shook it up. Maybe the pH down chemical settled to the bottom (although I didn’t see any build up)? Maybe it just dissipates throughout the solution?
I’m not sure. We’ll see how our new solution holds up over the weekend. Here’s a few pictures of the growth of our plant from this week. It’s pretty green and looking much healthier than the last time as it now has the nutrients it needs.