Scientific definition: the organic matter produced in a given time interval Measuring biomass is only needed in industrial facilities. The water content of the plant is regarded as constant in twenty-four hours on average. Definition of genetic potential for a given time interval and a given variety Understanding patterns requires further research

1. Plant energy model
Poland 2016
Trutina - weight based activity evaluation

2. weight based activity evaluation
• Scientific definition: the organic matter produced in a
given time interval
• Measuring biomass is only needed in industrial facilities.
The water content of the plant is regarded as constant
in twenty-four hours on average.
• Definition of genetic potential for a given time interval
and a given variety
• Understanding patterns requires further research
How to measure biomass?
Trutina

3. weight based activity evaluation
Trutina Hydro
Biomass sensors are
highly sensitive
devices. Their
installation is rather
difficult in industrial
conditions.

4. weight based activity evaluation
• Based on our experiences it should be enough
• We must not forget that it is a unit of measurement
• We measure four plants with utmost accuracy and
assume that their reactions are representative of all the
plants in the greenhouse
The representativeness of four plants for the whole
greenhouse
Trutina

5. weight based activity evaluation
Plant energy cycle
Trutina

6. weight based activity evaluation
• Plants use 93-95% of the energy coming from solar
radiation for evaporating the absorbed water
• Their energy use is characteristic and it is approximately
proportional to their transpiration
Plant energy model
Trutina

7. weight based activity evaluation
Light measurement
Trutina
Type of sensor: silicon
detector cell
Spectral range: 350-
1100 nm
Sensitivity:
1,2mv/W/m2

8. weight based activity evaluation
Trutina

9. weight based activity evaluation
Trutina

10. weight based activity evaluation
• Example: Let’s assume that the grower uses 8l/m² substrate
while keeping a usual 13% difference in water capacity.
• There has already been a 5,44% decrease so we can calculate
with a further 7,56% decrease until sunrise.
• In this case the irrigated water per square metre was 2,3
ml/J/cm².
8l X 7,56% = 0,60 l x 225,7 J = 135,42 J
That is: 907,59 J – 135,42 = 772,17 J
Plant energy model
Trutina

11. weight based activity evaluation
Irrigation – transpiration - drain
Trutina

12. weight based activity evaluation
The proportion of energy and irrigated water in ml/J at sunset
Trutina
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38
energia mérleg 837.9639.51036.1050.946.2652.7697.41102.766.1688.0 -357. 1011.546.61088.977.9892.5 79.9 655.7890.4734.1437.3 -371. 524.8692.1898.71000.917.3856.8831.3640.4878.7956.9687.7778.3903.6
kiadott ml/j 4.5534.3424.1314.5174.1994.4114.1584.0714.2324.4146.6944.143 4.46 4.2544.2314.074 4.51 4.3734.4744.3624.4326.2724.6134.6464.0614.0853.9654.009 4.24 4.4454.0383.984 4.74 4.57 1.559
0
1
2
3
4
5
6
7
8
-600.0
-400.0
-200.0
0.0
200.0
400.0
600.0
800.0
1000.0
1200.0
energia mérleg
kiadott ml/j

14. weight based activity evaluation
Questions we are working on:
• Determination of genetic potential (dashboard)
• Determination of actual value in J/ml (dashboard)
• Characteristics of biomass (vegetative vs generative)
Plant energy model
Trutina

15. Trutina - weight based activity evaluation
Data are avaiable both on computers and smartphones.
Each client has their own login and password.

16. weight based activity evaluation
Thank you for your attention.
Trutina