Monday, April 23, 2012

Watering Done Right

Living in a desert, we need to be cognizant of how much water we use and do our best to only use what we need.

"There are a number of ways to save water in your landscape, and there are some very good reasons to do so.  Over half of household water (in some cases as much as three-quarters) goes into your landscapes. That means watering your landscape efficiently is one of the best and easiest ways to save water.  Proper watering will also keep your landscape healthy and beautiful through the year"

There are 3 parts to sensible landscape watering:
1.  Know how much water your plants need
2.  Know how much water each part of your watering system applies
3.  Match your system's output to your plants' needs

Understandably, trying to figure out how much water your landscape truly needs to be healthy and functional may seem daunting.  However, there are resources available to help you dial in your irrigation system, saving you time, money, and water.

Landscape Watering Guide


Other resources



Monday, April 16, 2012

That "Rotten" Mosquito

Culex tarsalis: Dale Parker

There are over 40 different species of mosquitoes in Arizona.  Most are just nuisance pests and do not transmit any disease, other species do not impact humans in any way.  However, like most things in life, there are a few “rotten apples” that ruin it for the whole bunch.

Mosquitoes in Arizona: (the “rotten” ones)

Culex tarsalis: Western Nile Virus
This mosquito is a vector for several types of encephalitis causing viruses including West Nile Virus.  The adults hide in vegetation, burrows, barns, and culverts.  They feed on birds and mammals.

Aedes aegypti: Dog Heartworm
Not a native of Arizona but like many non-natives has taken up residence.  This mosquito can transmits dog heartworm.  Prefers small amounts of water for egg laying like water in old tires, clogged gutters, pet dishes, and birdbaths.  In other parts of the world this mosquito transmits viruses that cause yellow fever and dengue fever.

Anopheles freeborni: Malaria
This mosquito will feed on rabbits, cattle, horses, dogs, and aggressively bite humans.  It is the most important vector of malaria in Arizona.

Culex quinquefasciatus: Dog Heartworm, Encephalitis
This mosquito readily enters our homes and can be heard buzzing around our heads.  It will utilize small pools of water for egg laying.  This mosquito is a vector for several types of encephalitis causing viruses including West Nile Virus.

Using IPM to protect us around our homes

Integrated Pest Management aims to manage pests such as insects, diseases, weeds and animals by combining physical, biological, and chemical tactics that are safe and environmentally compatible.

For mosquito prevention:
  • Eliminate standing water by removing old tires, buckets, toys, and other water holding objects
  • Drain excess water from flowerpots
  • Keep rain gutters and drains clean and free of obstruction
  • Turn over wading pools and wheelbarrows when not in use
  • Change water in birdbaths by flushing with a hose at least once a week
  • Keep swimming pools covered when not in use
  • Clear aquatic vegetation from around the edges of ponds to allow fish to feed on mosquito larvae and pupae
  • Keep windows, doors and porches tightly screened
  • Try to avoid peak mosquito feeding time, which is usually dusk to dawn
  • If you need to use a mosquito repellent be sure to read and follow the label
  • Be aware of abandoned homes in your neighborhood, they may be a hotspot for mosquito breeding

More Arizona mosquito information can be found here:
http://research.biology.arizona.edu/mosquito/MosquitoUA.html
http://ag.arizona.edu/pubs/insects/az1221/

Thanks to Michelle Niedermeier 
Community IPM and Environmental Health Program Coordinator
Philadelphia School and Community IPM Partnership (PSCIP)
Pennsylvania Integrated Pest Management (PA IPM) Program

Monday, April 2, 2012

Scorpions among us

Temperatures are rising and our wonderful warm weather pests are starting to move about.  As you know scorpions are one of these. Scorpions are in fact, an important and beneficial component of our ecosystem by feeding on a variety of insects, spiders, centipedes, and other scorpions.

Of the 40 - 60 species in Arizona, only one is of medical importance, the Bark Scorpion (Centruroides sculpturatus).

Envenomation of a child is serious and emergency medical help should be sought immediately. 
 If it is safe to do so, kill and bring the offending scorpion to the medical facility for identification.

Who is at-risk for severe reactions?
  • Children under 12 years of age (or people weighing under 70 lbs)
  • Elderly
  • Those with compromised immune systems or hypertension
Antivenin is available at some hospitals
If you have been stung please contact:
Arizona Poison Control and Drug Information Center: 1 (800) 222-1222
(Please put this number in your phone)

In the U.S. the bark scorpion is found in southwestern California, Arizona, southern Utah, and southwestern New Mexico.  it is 1 - 3 inches in length and is the most encountered scorpion inside our homes.  This scorpion is commonly encountered outdoors and found under tree bark, logs, rocks, cracks and crevices in patios and driveways, and under other objects around the home landscape. They are capable climbers and will readily climb walls.

Symptoms of a bark scorpion sting:
Pain can be intense but little or no swelling
Numbness
Frothing at the mouth
Difficulty breathing
Muscle twitching or thrashing
Convulsions
Unusual head, neck, and eye movements
Drooling
Sweating
Restlessness or excitability and sometimes inconsolable crying
    Young infants are likely to cray inconsolably, and may hold the affected limb or area

Adults are more likely to experience:
Rapid breathing
High blood pressure
Increased heart rate
Muscle twitching 
Weakness

Most healthy adults can withstand a bark scorpion sting without medical treatment.  But if at all in doubt call Poison Control.

How to manage scorpions in your environment:
Pest-proofing your home is an essential first step to preventing unwanted guests of many kinds.  Scorpions are almost impossible to manage with insecticides alone so here are some tips to make your home and yard an unwelcoming site.

Tips for management:
  • Install weather-stripping and door sweeps on external doors.
  • Remove all harborages such as: trash, logs, boards, stones, bricks, and other objects within 5 feet from around your home.  Limit such sites in your landscape.
  • Keep grass closely mowed near the home.  Prune bushes and overhanging tree branches away from the structure (tree branches can provide a path to the roof for scorpions).  Minimize low growing ground cover vegetation.
  • Store garbage containers on a concrete slab.
  • Never bring firewood inside the building unless it is placed directly on the fire.
  • Plug weep holes in brick veneer with steel wool, pieces of nylon scouring pad or a small square of screen wire.
  • Caulk around roof eaves, pipes and any other cracks into your home
  • Keep window screens in good repaire
  • If you are inclined you can "see" if you have scorpions by conducting a U.V. black-light investigation several times during the summer between 8 - 11 pm.  Collect and freeze or release scorpions into the desert.

Scorpions are a beneficial part of our environment.  However, we do need to be aware of their possible dangers and tro to avoid close encounters.

More information on scorpions: