Chapters 5-7 Flashcards
4 physiological changes in the reproduction phase of sexual propagation
flower bud induction
flower bud initiation and development
flowering
fruit and seed production if fertilization occurs
main disadvantage of sexual propagation
producing offspring that are not uniform
two most critical environmental requirements pertaining to seed germination
water and temperature
vegetative propagation is also referred to as ___________ propagation
asexual
examples of ways to vegetatively propagate a plant
tip layering, runners, tuberous roots, and underground stems
strawberry runners are commonly propagated by
layering
grafting
the joining together of two different plant parts so that they will heal together and continue growing as one unit
steps to be followed when accepting an order at a retail garden center
confirm all orders
determine if the order contains quality materials
examine for pests
3 indicators that a plant needs irrigation
sight (looking at the foliage)
weight (low moisture means lighter weight)
touch (feeling the mediums moisture)
why is cold damage common on container-grown ornamental plants at temperatures of 20-25 degrees F?
because their root systems are above the ground and are not insulated
the optimum planting time for adding container-grown plants to a landscape
fall
should organic amendments be added to a planting hole when planting an individual tree
no
advantages of using mulches
maintain a uniform soil moisture level, insulate the roots from extreme temperatures, reduce soil-borne diseases on foliage, and help prevent weeds
NPK ratio recommended for fertilizer used on ornamental trees and shrubs
3:1:2
why prune
- to eliminate dead diseases
- to improve the form and balance
- to guide the growth habit
- to stimulate new growth
- to rejuvenate older planting
- to maintain a geometric shape
hormone in the terminal bud of plants that directs bud growth along the stem
auxin
thinning out
is the removal of branches back to a lateral branch or main trunk
are pruning plants recommended to promote wound healing on trees?
no
when should spring-flowering shrubs be pruned
after they bloom
when should summer-flowering trees and shrubs be pruned
during dormancy
pruning procedures recommended for nandina and mahonia
as the plants age, thing out older canes by cutting them back 6” to 8” from ground level
heading back
is the removal of the terminal portion of twigs back to an auxiliary bud or node
