Wiki
White papers on controlled-environment cultivation. Press Ctrl K (or ⌘K) to search them.
Propagation
- Seeds and germinationGerminate seeds and keep the seedlings in good condition
- CloningCuttings that make roots each time
- Tissue cultureClean genetics from a small piece of tissue
- TC methodAll the steps of cannabis tissue culture
- TC SOPTasks, record sheets and a low-cost hood from China
- TransplantingMove plants to larger pots and prevent slow growth
- Mother plantsStock plants, HpLVd control and replacement
Vegetative growth
Flowering
- Flower week by weekFrom the start of flowering to harvest
- Coco and crop steeringUse water to control the plant
- Rockwool and crop steeringDrybacks, saturation and the lowest safe water content
- One steering lawThe same crop steering for coco, rockwool, soil and water
- Slab irrigationBlocks on slabs, from the first roots to harvest
- Ripening and harvestTrichome checks, when to flush, and the harvest decision
Harvest, dry, trim and cure
Environment and climate
- Grow room systemsThe grow room as one system
- Basic lightingSpectrum, PPFD and DLI
- Airflow and fansHow much air to move, and where to put the fans
- Under-canopy lightingPhotons at the floor: SCL and ICL
- CO2 enrichmentSupply carbon dioxide to the plant, safely
- Higher light levelsFind the supply that is the limit, then adjust the light
- Temperature, humidity and VPDLeaf VPD, dew point and targets for each stage
- HVAC and dehumidifiersHeat load and vapor load, and the size of the equipment
Water, substrate and feed
Plant health
Precision and automation
- Root-zone condition · TEROS-12How to read the values from the sensor
- Irrigation control · VRWEHow the controller makes irrigation decisions
- Signal and noiseFind the difference between plant changes and sensor noise
- The closed loopLevers, signals and plant state
- Plant state dashboardFrom sensor data to a decision
- F2 crop steeringThe P0-P3 cycle for each day
- Irrigation manualInstall and operate the system
- DIY plant-biosignal sensorRead the electrical signals of a plant. Cost: approximately NZ$110
Facility and quality
- 3D facility modelSee the facility in 3D before you make it
- Checks each dayFacility checks where sensors do most of the work
- Compliance and traceabilityLicenses and batch records, from mother plant to lot
- Energy and utilitiesWhere the kWh go and how to use less energy
- Yield and unit costThree methods to measure yield, and the cost of a gram