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However, when these commercial varieties turn green, even they can approach solanine concentrations of 1000 mg/kg (1000 ppmw). The U.S. National Toxicology Program suggests that the average American consume no more than 12.5 mg/day of solanine from potatoes (the toxic dose is several times this, depending on body weight).
The name indicates that such objects can kill forest workers by falling on them, thus "making widows" of their spouses. The U.S. Occupational Safety and Health Administration describes widowmakers as "broken off limbs that are hanging freely in the tree to be felled or in the trees close by." [1]
Despite this, the borers can still damage the trees if they are weakened by other means. Between about 1930 and 1950, many gray birch trees, along with paper birch and yellow birch ( Betula alleghaniensis ), were weakened by birch dieback disease , which allowed for the bronze birch borer to attack and kill the trees.
D. moroides is a straggly perennial shrub, usually flowering and fruiting when less than 3 m (10 ft) tall, but it may reach up to 10 m (33 ft) in height. It is superficially similar to Dendrocnide cordifolia, with the most obvious difference being the point of attachment of the petiole to the leaf blade—where D. moroides is peltate, i.e. the stalk attaches to the underside of the leaf and ...
The antimicrobial potency and range of phytoncides vary greatly among species. Some can kill many types of protozoa, bacteria, fungi, and insects within minutes or seconds, while others may take hours or only harm the pest. In addition to acting as a “plant protector”, phytoncides can also impede the reproduction of pests. [3]
Here are 10 weird things that can kill you almost instantly. Number 10.A meteor. Humans have been lucky when it comes to avoiding sizeable meteors and mass die-offs. ... The probable effect has ...
Because the eastern white pine tree is somewhat resistant to fire, mature survivors are able to reseed burned areas. In pure stands, mature trees usually have no branches on the lower half of their trunks. The white pine weevil (Pissodes strobi) and white pine blister rust (Cronartium ribicola), an introduced fungus, can damage or kill these trees.
It's important to keep your guard up, everything from vending machines to mini-golf have caused unfortunate and deadly accidents. Beware of these unassuming dangers! More in strange: 9 unusual ...
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