How to use
Sowing the seed
Tenlead Plants Seed Germination Slots need to be watered priorto sowing the seed. Seed can be sown using a vacuum seeder or manually by placing the seed in the dibble holes. The specially designed can ensure the seed sets properly in each cube.
After the seed is sown irrigation can be done manually with a hose and water breaker (i.e., wide fan nozzle) or automatically by passing the them through a watering tunnel. The slots should be thoroughly saturated.
Watering
As rule of thumb, water each sheet for 2 minutes at regular tap water pressure.
If the seedlings are going to be irrigated/fertigated by overhead irrigation, place the Tenlead Plants Seed Germination Slots in solid bottom trays with drain holes. Never use a solid bottom tray without drain holes. If sub-irrigation is going to be used, place them in trays that have solid sides and web bottoms. Both of these media should not be allowed to go completely dry between waterings.
Once the Plants Seed Germination Slots are thoroughly saturated, the cubes should stay moist during the course of germination.
Lettuce seed sown in them does not have to be topdressed with vermiculite. But the seed require a dark treatment for germination.
The best germination usually occurs when the their temperature is below 70°F. The seed usually germinates in two to three days.
Watering and fertilizing seedlings
Generally lettuce seedlings in Plants Seed Germination Slots do not require misting or watering during germination. However, on bright hot summer days consider a brief misting (5 seconds once a day) on Day 2 and Day 3. Apply clear tap water with no fertilizer.
Once the lettuce seed has germinated the mist frequency needs to be adjusted. A typical misting program consists of starting from Day 4 to Day 7, three times a day for 10 seconds. From Day 7 to finish, mist four times a day for 10 seconds. If the seedlings are going to be either hand-watered or on a sub-irrigation system, irrigate only once a day.
Start fertilizing the seedlings on Day 4. All of the different nutrient formulations developed for lettuce production will work with the sponge. Growers should customize their specific formulations depending on water supply, lettuce cultivars, production system, climate and season. The nutrient solution pH should range from 5.5 to 6. The recommended electrical conductivity during propagation is 1.0 mS/cm. The recommended electrical conductivity during production is 1.2 to 2.2 mS/cm.
Transplanting Seedlings
Lettuce seedlings should be ready to transplant 10 to 14 days after sowing depending on seasonal climate conditions. During summer months it takes about 10 days from sowing to transplant and during winter months it takes about14 days. The criteria for transplant are development of two true leaves and root penetration through the bottom of the the sheets.
At transplant the pre-scored sheets can be easily separated into individual cubes.
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