March 27, 2008
11:30 a.m. - 12:00 p.m.
I recorded the highest and lowest temperatures for the greenhouse and outside. I also checked the time of sunrise - 6:30 a.m. - and sunset - 6:45 p.m. - and adjusted the growth chambers accordingly.
Thursday, March 27, 2008
Wednesday, March 26, 2008
Week 7a
Tuesday
March 25, 2008
11:00 a.m. - 1:00 p.m.
This week I measured the diameter, length, and weight of the bulbs in the light experiment groups. I went about it the same way the I did in the light exclusion experiment groups.
March 25, 2008
11:00 a.m. - 1:00 p.m.
This week I measured the diameter, length, and weight of the bulbs in the light experiment groups. I went about it the same way the I did in the light exclusion experiment groups.
None of the bulbs from outside had rotted and all of them have roots. Seven of the bulbs had developed a white hairy mold. Nine of the bulbs had a blue mold, which Dr. McFarland told me was penicillin eating off the dead storage leaves of the bulbs. He suggested we apply fungicide in the near future.
One of the bulbs from the greenhouse rotted. The nine remaining had developed roots. Four had a red mold.
Previously, eight of the bulbs from this experiment were found rotted. One of the remaining two had rotted, which left one bulb in this group. It had a red mold, and no roots at all.
Another bulbs from the cold treatment rotted, which makes two total. Six of the bulbs had roots. All three molds I have observed were present in this experiment: four had a red mold, five had a blue mold, and four had the white hairy mold.
Again, I lightly watered each group before returning them to their places.
I did not record the temperature or the day length because it was still early in the week and I wanted to wait until Thursday or Friday.
Thursday, March 20, 2008
Week 6
Thursday
March 20, 2008
1:00 p.m. - 4:00 p.m.
This week I only had time to check the status of the light exclusion experiments. For each treatment, I recorded how many bulbs had rotted and anything unusual about the bulbs. Then I rinsed the sand off of each bulb and dried them on a paper towel. I measured the diameter and length of each bulb and found the average diameter and length for each group. Then I weighed each group.
I dug up the pot outside and brought it inside so I could observe the bulbs. None of the bulbs outside had rotted, and all of the bulbs had developed thick roots. Six of the bulbs appeared to have the same blue mold that the cold treatment had, and five of the bulbs had developed a white hairy mold. The same blue mold seemed to be in a layer around the bulbs in the bottom of the pot (the bottom 7 cm) but not the upper portion.
None of the bulbs from the greenhouse had rotted, and all but one of the bulbs had developed thick roots. Six of the bulbs were spotted by a red mold. The same red mold seemed to be in a layer around the bulbs in the bottom of the pot (the bottom 7 cm) but not the upper portion.
Seven bulbs from the heat treatment had rotted, and a layer of white mold had formed on surface of the sand. But there was no mold on any of the remaining bulbs, but none had developed any roots. I scrubbed out the pot and changed the sand before replacing the bulbs.
One bulb from the cold treatment group had rotted. Seven of the remaining bulbs had areas covered in a blue mold. The same blue mold seemed to be in a layer around the bulbs in the bottom of the pot (the bottom 7 cm) but not the upper portion. All nine bulbs had short roots.
I lightly watered each of the treatments that I had checked, but none of the four that I had not checked.
I recorded the highest and lowest temperature outside and in the greenhouse for each day the previous week. I then recorded the time the sun rose -6:45 a.m. - and set - 6:45 p.m. (which does not feel correct, but that is what the computer said) - and adjusted the light time for the growth chambers accordingly.
Dr. McFarland explained to me the reason why many of the bulbs had increased in weight and size was because they had absorbed water. He explained that it was not because of carbon, because the bulbs were not photosynthesizing! (they have not yet emerged from the sand) He went on to explain that the plants that will not be exposed to light will not be able to photosynthesize, which I took to mean that their growth will plateau as the plants that are not covered will skyrocket in growth.
The sand was rinsed off the bulbs and the bulbs were placed on a paper towel to dry.
The diameter was measured.
The length was measured.
The weight was measured.
Some bulbs in the cold treatment and the outdoor treatment had a blue mold.
Some bulbs from the greenhouse had a red mold.
Some bulbs from outside had a white hairy mold.
The heat treatment was covered with a layer of white mold.
March 20, 2008
1:00 p.m. - 4:00 p.m.
This week I only had time to check the status of the light exclusion experiments. For each treatment, I recorded how many bulbs had rotted and anything unusual about the bulbs. Then I rinsed the sand off of each bulb and dried them on a paper towel. I measured the diameter and length of each bulb and found the average diameter and length for each group. Then I weighed each group.
I dug up the pot outside and brought it inside so I could observe the bulbs. None of the bulbs outside had rotted, and all of the bulbs had developed thick roots. Six of the bulbs appeared to have the same blue mold that the cold treatment had, and five of the bulbs had developed a white hairy mold. The same blue mold seemed to be in a layer around the bulbs in the bottom of the pot (the bottom 7 cm) but not the upper portion.
None of the bulbs from the greenhouse had rotted, and all but one of the bulbs had developed thick roots. Six of the bulbs were spotted by a red mold. The same red mold seemed to be in a layer around the bulbs in the bottom of the pot (the bottom 7 cm) but not the upper portion.
Seven bulbs from the heat treatment had rotted, and a layer of white mold had formed on surface of the sand. But there was no mold on any of the remaining bulbs, but none had developed any roots. I scrubbed out the pot and changed the sand before replacing the bulbs.
One bulb from the cold treatment group had rotted. Seven of the remaining bulbs had areas covered in a blue mold. The same blue mold seemed to be in a layer around the bulbs in the bottom of the pot (the bottom 7 cm) but not the upper portion. All nine bulbs had short roots.
I lightly watered each of the treatments that I had checked, but none of the four that I had not checked.
I recorded the highest and lowest temperature outside and in the greenhouse for each day the previous week. I then recorded the time the sun rose -6:45 a.m. - and set - 6:45 p.m. (which does not feel correct, but that is what the computer said) - and adjusted the light time for the growth chambers accordingly.
Dr. McFarland explained to me the reason why many of the bulbs had increased in weight and size was because they had absorbed water. He explained that it was not because of carbon, because the bulbs were not photosynthesizing! (they have not yet emerged from the sand) He went on to explain that the plants that will not be exposed to light will not be able to photosynthesize, which I took to mean that their growth will plateau as the plants that are not covered will skyrocket in growth.
The sand was rinsed off the bulbs and the bulbs were placed on a paper towel to dry.
The diameter was measured.
The length was measured.
The weight was measured.
Some bulbs in the cold treatment and the outdoor treatment had a blue mold.
Some bulbs from the greenhouse had a red mold.
Some bulbs from outside had a white hairy mold.
The heat treatment was covered with a layer of white mold.
Saturday, March 15, 2008
Week 5
Friday
March 14, 2008
11:00 a.m. - 12:30 p.m.
I recorded the highest and lowest daily temperatures for inside the greenhouse and outside for the previous week.
Earlier in the week had been daylight savings time; so the hour had moved forward. I recorded the time that the sun had risen - 7:00 a.m. - and what time the sun had set - 6:30 p.m. - and adjusted the time that the light would turn on and off in the growth chambers accordingly.
None of the tulips had emerged from the sand, so a pot was selected to check the status of the bulbs. The experiment of heat and light's effect on the growth of the tulip bulbs was selected. The sand was gently shoveled out and sifted through. It was discovered that all but two of the bulbs had rotted, and the two remaining bulbs did not seem to have grown any roots at all. This being very disappointing, the experiment that tested the effect of cold temperatures on the tulip bulbs was then sifted through in the hopes that not all of the experiments had not rotted. It was exciting to find that not only had eight out of the ten bulbs in that test had not rotted, but many of them had developed roots. The rotted bulbs from both tests were discarded, and the remaining bulbs were replaced on 5 cm of sand with the rest of the sand poured on top to fill the pots.
The sand was sifted through to find the bulbs.
Only two bulbs from the heat and light experiment remained.
A rotted bulb.
8 of the 10 bulbs in the cold and light experiment remained.
Many bulbs from the cold treatment had developed roots.
March 14, 2008
11:00 a.m. - 12:30 p.m.
I recorded the highest and lowest daily temperatures for inside the greenhouse and outside for the previous week.
Earlier in the week had been daylight savings time; so the hour had moved forward. I recorded the time that the sun had risen - 7:00 a.m. - and what time the sun had set - 6:30 p.m. - and adjusted the time that the light would turn on and off in the growth chambers accordingly.
None of the tulips had emerged from the sand, so a pot was selected to check the status of the bulbs. The experiment of heat and light's effect on the growth of the tulip bulbs was selected. The sand was gently shoveled out and sifted through. It was discovered that all but two of the bulbs had rotted, and the two remaining bulbs did not seem to have grown any roots at all. This being very disappointing, the experiment that tested the effect of cold temperatures on the tulip bulbs was then sifted through in the hopes that not all of the experiments had not rotted. It was exciting to find that not only had eight out of the ten bulbs in that test had not rotted, but many of them had developed roots. The rotted bulbs from both tests were discarded, and the remaining bulbs were replaced on 5 cm of sand with the rest of the sand poured on top to fill the pots.
The sand was sifted through to find the bulbs.
Only two bulbs from the heat and light experiment remained.
A rotted bulb.
8 of the 10 bulbs in the cold and light experiment remained.
Many bulbs from the cold treatment had developed roots.
Friday, March 7, 2008
Week 4
Friday
March 7, 2008
12:00 p.m. - 12:30 p.m.
I recorded the highest and lowest daily temperatures for inside the greenhouse and outside for the previous week.
I recorded the time that the sun had risen - 6:30 a.m. - and what time the sun had set - 7:30 p.m. - and adjusted the time that the light would turn on and off in the growth chambers accordingly.
I then watered all of the pots except the experiments outside, as it was raining.
March 7, 2008
12:00 p.m. - 12:30 p.m.
I recorded the highest and lowest daily temperatures for inside the greenhouse and outside for the previous week.
I recorded the time that the sun had risen - 6:30 a.m. - and what time the sun had set - 7:30 p.m. - and adjusted the time that the light would turn on and off in the growth chambers accordingly.
I then watered all of the pots except the experiments outside, as it was raining.
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