wildfire

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wildfire

1. a highly flammable material, such as Greek fire, formerly used in warfare
2. lightning without audible thunder

Wildfire

 

an infectious disease of tobacco and Indian tobacco caused by the bacterium Pseudomonas tabacum. Wildfire is characterized by the appearance of numerous pale yellow chlorotic spots, reaching 2 cm in diameter, on the leaves and, sometimes, on the sepals and pods. The diseased areas desiccate in dry weather and rot in humid weather, which often leads to the perforation of the leaves. The causative agent of wildfire enters the plant through the stomata and damaged tissues. The bacterium is preserved in dust that has settled in drying sheds or clinged to seeds and to greenhouse stock; it is also preserved in the unrotted remains of a harvest. Wildfire decreases harvests by 40 to 50 percent. Prices for tobacco leaves drop by 80 percent when the leaves are diseased.

Control measures include using liquid disinfectants on seeds, disinfecting greenhouse stock, spraying seedlings with Bordeaux mixture during the phase of two true leaflets, and growing resistant varieties. The application of potash fertilizers and autumn plowing are also recommended.

REFERENCES

Grushevoi, S. E. Bolezni tabaka i sistema meropriiatii po bor’be s nimi. Moscow, 1950.
Leonov, I. P., A. G. Petrenko, and G. M. Psarev. Posobie dlia tabakovodov. Moscow, 1968.

S. E. GRUSHEVOI

wildfire

[′wīl‚fīr]
(plant pathology)
A bacterial disease of tobacco caused by Pseudomonas tabaci and characterized by the appearance of brown spots surrounded by yellow rings, which turn dark, rot, and fall out.
References in classic literature ?
For which reason I advise you to let me sell Wildfire.
And take care to keep sober to-morrow, else you'll get pitched on your head coming home, and Wildfire might be the worse for it.
One of those fits of yearning was on him now, and it would have been strong enough to have persuaded him to trust Wildfire to Dunstan rather than disappoint the yearning, even if he had not had another reason for his disinclination towards the morrow's hunt.
I observed also that there was a place at the farther side of it that went in further, but was so low that it required me to creep upon my hands and knees to go into it, and whither it went I knew not; so, having no candle, I gave it over for that time, but resolved to go again the next day provided with candles and a tinder-box, which I had made of the lock of one of the muskets, with some wildfire in the pan.
Leaning her head against the chimney-piece, with a great assumption of dignity and refinement of manner, sat an elderly female, in as many scraps of finery as Madge Wildfire herself.
Their first care was to get something that would soon take fire, but, after a little search, they found that would be to no purpose; for most of the houses were low, and thatched with flags and rushes, of which the country is full; so they presently made some wildfire, as we call it, by wetting a little powder in the palm of their hands, and in a quarter of an hour they set the town on fire in four or five places, and particularly that house where the Indians were not gone to bed.
Still, over half of the wildfires we saw this year were human-caused.
We believe the city of Wenatchee is in an excellent position to benefit from CPAW due to the community's recent wildfires, future development pressures, anticipated planning updates and strong leadership support for this opportunity," said Molly Mowery, president of Wildfire Planning International.
There were 15 large wildfires that year, each burning more than 100,000 acres, according to the National Interagency Fire Center.
March 31, 2014 /PRNewswire/ -- As warmer weather approaches, the Chubb Group of Insurance Companies is encouraging homeowners to take steps now to help protect their homes from wildfires.
According to the Insurance Information Institute, about 37,000 wildfires burned nearly 4 million acres in the first eight months of 2013.
Kathmandu, May 10 -- Waking up to the fact that deadly forest fires raged in more than 400 places in 43 districts this year, the government has decided to create a basket fund to prevent and control wildfires, an official said.