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Phosynthetically Active Radiation Tests
Cucumber Plants, Week 1-11, 2010
Greenport Campus / TNO Horticulture Field lab |
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| Top 4 lamps - main points
Opti Blue:
• At first good results
• Remakeble less growpower at the end off the test
Lg plasma lamp :
• Strong plants , Big leaves
• More vegetative growth
• Relative production lower |
Plasma International
Lamp :
• Plants look weaker but have a higher production
• Fruits with relative higher density, a “Good
Bite “
• Healty root system !
Son-T Lamp
• Plants seens to be more vulnerable for Botrytis
(Fungus )
• A lot of trips ( pest ) most likely becourse the infra
red heat radiation |
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| Lamps Used In Test: |
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| Measurements |
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| 2 Final
Test Plants |
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| Lamp |
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| No of plants from the box |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
| Plant height (in meters) |
4,26
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4,5 |
4,72
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4,2 |
5,05
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5,05 |
5,38
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5,45 |
5,3
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5,15 |
5
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5,1 |
5,25
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5,2 |
4,61
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4,97 |
| Number of leaves / plant |
38
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40 |
42 |
41 |
44 |
44 |
46 |
45 |
45 |
50 |
48 |
46 |
45 |
45 |
42 |
44 |
| Number of branches |
4 |
5 |
5 |
7 |
1 |
2 |
2 |
2 |
1 |
2 |
10 |
9 |
3 |
3 |
2 |
4 |
| Weight v / d branches (in grams) |
212 |
181 |
181
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237 |
21 |
26 |
58 |
83 |
11 |
34 |
61 |
207 |
68 |
67 |
61 |
131 |
| Weighted number of leaves |
10 |
10 |
10 |
10 |
10 |
10 |
10 |
10 |
10 |
10 |
10 |
10 |
10 |
10 |
10 |
10 |
| Weight v / d leaves (in grams) |
395 |
335 |
341
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236 |
273
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244 |
292
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298 |
271
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270 |
286
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294 |
262
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265 |
287
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332 |
| Number of fruit still on plant |
7 |
7 |
7 |
7 |
8 |
7 |
5 |
5 |
5 |
10 |
6 |
6 |
9 |
6 |
5 |
7 |
| All fruit weight
(in grams) |
395
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335 |
341 |
236 |
273
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244 |
292
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298 |
311
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406 |
476
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494 |
208
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355 |
692
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665 |
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