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LESSON FIVE

Nutrients Requirements and Testing 5 -5

Month: July                                        Example of Data for Hydroponic Tomato Garden

Date EC pH  Sol. Temp Day Temp Night Temp Growth Stage Size Comments
1 1800 6.0 74 F 76 F 70 F

Seed

-

Planted seeds

2 1800 6.0 74 F 76 F 70 F

Seed

-  
3 1800 6.0 74 F 78 F 70 F Seed -  
4 1800 6.0 74 F 78 F 70 F Seed 0.0"

Seeds Germinated

5 2000 6.0 70 F 78 F 68 F Seedling

0.5"

Leaves emerge

6 2050 6.0 70 F 78 F 68 F Seedling

0.9"

 
7 2100 6.0 70 F 79 F 67 F Seedling 1.0"  
8 2150 6.0 70 F 78 F 68 F Seedling 1.5"  
9 2200 6.0 70 F 79 F 69 F Seedling 2.0" 2nd leaves appear
10 2400 6.0 70 F 77 F 68 F Seedling 2.3" Replace nutrient solution
11 2400 6.0 70 F 80 F 67 F Seedling 2.6"  
12 2450 6.0 70 F 79 F 66 F Seedling 3.0"  
13 2450 6.0 70 F 80 F 68 F Seedling 3.5"  
14 2500 6.0 70 F 80 F 69 F Seedling 4.0" Rapid growth
15 2500 6.0 70 F 80 F 67 F Seedling 4.5"  
16 2500 6.0 70 F 79 F 68 F Seedling 5.0" Yellowing leaves
17 2500 6.0 70 F 77 F 70 F Seedling 5.5"  
18 2400 6.0 70 F 80 F 69 F Vegetative 6.0"

Replace nutrient solution

19 2400 6.0 70 F 78 F 69 F Vegetative 6.8"

Yellowing gone

20 2450 6.0 70 F 80 F 68 F Vegetative 7.6"  
21 2450 6.0 70 F 79 F 69 F Vegetative 8.0"  
22 2500 6.0 70 F 77 F 67 F Vegetative 8.8" Rapid growth
23 2500 6.1 70 F 80 F 68 F Vegetative 9.6"  
24 2500 6.1 70 F 79 F 70 F Vegetative 10.2"   

25

2500 6.1 70 F 80 F 69 F Vegetative 11.0"  
26 2500 6.0 70 F 79 F 69 F Vegetative 11.6"  
27 2600 6.0 70 F 77 F 68 F Vegetative 12.0"

Replace nutrient solution

28 2600 6.0 70 F 80 F 69 F Fruiting 12.5"

buds appear

29 2600 6.1 70 F 79 F 67 F Fruiting 13.0"  
30 2650 6.1 70 F 80 F 68 F Fruiting 13.5"  
31 2700 6.1 70 F 79 F 70 F Fruiting 14.0"

First flower opens

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