section 2 quiz Flashcards
what are the soil moisture levels?
How much water is too much for a seedling?
usually stage 5
how can you add humidity to a growing space?
Plastic humidity dome over trays, plastic humidity tents with a mist system inside, remay fabric/ row cover, automated humidity controller.
how can you decrease humidity in a growing space?
Removing humidity tent/dome/fabric. Vents, good drainage, and fans.
What does soil do for seedlings?
Gives support, air, water holding capacity, and adequate drainage.
What are some things to take into consideration when mixing your own media?
- create pockets of air for good porosity
- holds water for an adequate amount of time
- provides nutrition
- provides support
A good growing media provides ( ) out of 20 essential nutrients for plant growth
17
what is the ideal media mix?
it heavily depends on the plant.
what are some common methods for testing soil?
- pour through method
- Dilution method
- Dry testing
What is a native plant?
Native plants are those that occur naturally in an area.
Why are native plants important?
They are a habitat and food source for organisms, preserving rare and endangered species for future generations, recreation, and enjoyment of natural beauty.
Endangered vs Threatened species
An Endangered species is critical, which means species are likely to become extinct and you cannot collect seeds.
A Threatened species hasn’t reached a critical point, but you still cannot collect seeds,
What are the top three seed collection guidelines?
- Never collect seeds from a threatened it endangered species
- Ask permission before collecting seeds on private property.
- Only collect seed from state/federal land if you have a valid permit.
Where can you collect native seeds?
On your own property, beside the road, private/state/federal property only if you have a permit.
What is being done to preserve rare and endangered native plants in the US?
The use of seed vaults to store, research, and test seeds.
Tree conservation services trying to fix the damage of deforestation.
USDA National Seed Lab/vault
Their mission is to provide seed technology to restore all native plants on our land. A seed vault is a long-term storage facility that has no public access.
Seed library
Short-term seed storage, open to the public to give and/or take seeds.
What is IPM?
IPM is a pest management strategy that utilizes a wide range of pest control methods and tactics.
What are the 5 components of IPM?
- Identify
- Understand pest biology
- Monitor pest
- Taking action
- Record/evaluate
What are the common signs of Damping off?
-Radicle does not emerge or is small and shriveled
-Stem of seedling turns grey or black
- Seedling collapses
Damping off is caused by ( ? ) different fungi
4
What are the environmental conditions that favor Rhizoctonia?
- High moisture levels
- Damaged seeds or plant tissue
- Adequate temperatures
How to prevent Damping off?
- Make sure the soil is sanitized and well-drained
- Seed treatments
- Control moisture closely
- Control temps
How to prevent/ control fungus gnats
- Sanitize soil, pots, trays, surfaces, and floors.
- Good drainage in the greenhouse
- Check soil mix
- Reduce soil moisture levels as soon as possible.
How often should you be scouting for pests?
Weekly
What are some examples of biocontrol organisms?
Lady bugs, Predatory mites and wasps
What are some advantages of biocontrol organisms?
- reduces insecticide use
- season-long control
- higher profit from higher crop yield.
What are some disadvantages of biocontrol organisms?
- requires more effort
- does not kill all pests
- expensive
List the tiers of the IPM triangle from bottom to top
- Prevention
- Cultural/ Sanitation
- Physical/ Mechanical
- Biological
- Chemical
