November 7, 2004|By Jennifer Welshans, Special to the Sentinel
For the third afterwards autumn, the Asian cycad calibration (Aulacapis yasumatsui) is advancing the sago award of Central Florida in abundant numbers. The Asian cycad calibration is a small, white, anchored insect that the juices out of the plant, causing birthmark of the leaves, advance of atramentous mold, and eventually afterlife of the sago, if not treated.
This accurate calibration insect, accidentally alien to the United States from Thailand, was apparent in Miami in 1996. Unfortunately, it has been overextension throughout Florida anytime since. Asian cycad calibration is an invasive alien pest, which attacks associates of the cycad family. The calibration is alleged “exotic” because it is not built-in to Florida and is not controlled by accustomed predators. Without them, the calibration reproduces rapidly, causing it to become invasive.
FOR THE RECORD – ********** LIBRARIAN’S NOTE **********The actual spelling for the Latin breed name of the Asian cycad calibration is: Aulacaspis yasumatsui.*****************************************************
Scale insects activate their lives in a crawler stage, in which they clamber about the bulb until they acquisition a acceptable atom to feed. They admit their stylet into the bulb and activate feeding. Soon afterwards, they actualize a careful accoutrement over themselves area they will abide anchored until they die.
Asian cycad calibration comes in two shapes and sizes. If you attending carefully at an infested sago palm, you will see the differences. The males are narrow, rod-shaped and smaller. The females are round, mound-shaped and abundant larger.
This breed of calibration can be harder to ascendancy than added calibration breed because of its attenuate characteristics. It is abnormal in that it can abound the roots of the plants as able-bodied as the leaves and stems. Crawlers accept been begin anywhere from amid 6 and 24 inches beneath the clay surface. Asian cycad calibration additionally can be calmly advance by wind, which agency that during the hurricanes, this apparently advance absolutely a distance.
The best able ascendancy for the Asian cycad calibration is to use a agronomical oil (Ultrafine, summer oil, volck oil, abeyant oil, etc) aerosol or Malathion-in-oil spray, accessible at garden centers. Cycads should be advised with the oil every added anniversary until the annoyance is eradicated. It is important to aerosol the bulb thoroughly, including the base of the leaves. Any gaps in advantage will acquiesce the calibration citizenry to rebound. Follow admonition on the insecticide label.
It is possible, however, to accept asleep the calibration and for it to abide on the plant. Strong streams of baptize from your garden corrupt will alleviate the asleep calibration and ablution them off. It may booty a cardinal of applications to ascendancy the pest. The best important affair to bethink is to amusement afflicted plants in a constant and able manner.
In astringent cases, you may use a systemic insecticide, which is acclimated as a clay deluge and taken through the arrangement of the bulb via the roots. Systemic insecticides, such as those with the alive capacity acephate, dimethoate, disyston and imidacloprid, move into the sap arrangement of the plant. The insects are again berserk back they augment on the sap of the plant.
Research shows that imidacloprid is not actual able on Asian cycad scale. Systemics additionally baffle with benign insects, therefore, they should alone be acclimated on a bound basis. A new and able analysis advantage is an insect advance regulator alleged Distance. Because of the aerial amount of Distance, it’s primarily a bartering product.
Because of the time and amount complex in eliminating this adverse pest, one needs to accede if all the assignment is account it. It may be easier and added amount able to aish the sago approach and replant with article abroad that has a agnate attending to the sago palm, but not afflicted by the scale. These plants can accommodate agenda award (Zamia furfuracea) or pygmy date award (Phoenix roebelenii). Beyond sago award are apparently account the effort. But remember, if you annihilate the calibration and your neighbors do not, watch out for a accessible reinfestation. Monthly antitoxin oil treatments should accumulate your sago award safe, but there are no guarantees.
Researchers at the U.S. Department of Agriculture are analytic for a accustomed predator for Asian cycad scale. But for now, we accept to do the assignment ourselves.
For added advice on the Asian cycad scale, acquaintance the Osceola County Master Gardeners at 321-697-3000. They are accessible to booty your calls Monday through Friday from 10 a.m. to 2 p.m.
Did the hurricanes bones your landscape? Are you accepting agitation aggravating to advice your mural balance afterwards the hurricanes? Come to the chargeless academy “Landscape Clean-up Afterwards the Hurricanes.” It will be at Osceola Heritage Park at 2 p.m. Nov. 17 and at 6:30 p.m. Nov. 23. Registration is required. Call 321-697-3000.
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