Water Flashcards
Why is Water important to trees
Water is vital to trees. Large trees can absorb hundreds of liters of water a day, and as much as 95 percent of that water may be returned to the atmosphere through transpiration. Without sufficient soil moisture, a tree becomes water stressed and stops growing, and overall plant health can decline. Too much water in the root zone can cause tree decline as well. Maintaining optimal amounts of water inthe root zone is critical for tree health and growth
Why is irrigation important in urban trees
Each tree species requires a different watering schedule and factors such as weather conditions, types of soil, drainage, and how water will be applied to have a healthy growing tree.
Why too little or too much water for a tree is bad
A tree will grow slow, decline or die if consistent water is not applied
Lack of water can cause root loss, marginal leaf scorch, leaf drop, twig dieback, and plant death
Too much water because of over watering, bad drainage, high water table, or flooding can lead to root death, leaf yellowing, leaf loss, and crown dieback due to lack of oxygen and fertilizer uptake
What do trees do to survive harsh conditions and environments
shed or drop their leaves or go dormant early and stay dormant longer in spring. Some trees control water loss by their leaf size, cuticle thickness, tiny leaf hairs that trap moisture and have sunken stomata that have a small air pocket for moisture control.
drought tolerant trees can take more water than others like, brisbane box, chinese flame tree, Redbuds, stone pines. But others like olives, california pepper, and palo verde will not tolerate it
What is turgid
full hydrated
Problems with irrigation systems
Most yards are overwatered with these. You can spoil your plants. All plants in system will get watered off same valves
Problems with spray sprinklers
they over spray everything, they spray tree parts and cause fungus, rot issues on trunks.
Bubblers
work great for mature trees and new trees recently planted with good wells, they need to be adjustable ( black drip pipe with bubble head). May not work on slopes.
Soaker hose
good method, multiple ways to use, deep soaker
Drip Irrigation
it’s ok. They clog, maintenance needed, needs to be install right
Netafim tubing
its common to overwater with this tubing. But can be functional.
Hand watering
***my favorite. Takes a lot of time and effort. Efficient and specific watering. Not for everyone. And I’m not recommending it.
How mulch can be important for trees
enhance soil, fertility, soil structure as it decomposes), also good for erosion control slows down runoff, water retention, protects trees from trimmers, improves drainage by amending, grass shallow root types, reduces soil compaction,appearance
Water Quality in San Diego
San Diego’s water has minerals and salts we have to flush/leached out with rain. Examples- Avocados
Recycled water/ grey water
rain water is great, grey water should be as clean as possible of detergents, purification ok.
