Results 241 to 250 of about 31,109 (297)

Study on the chemical control of common ragweed (Ambrosia artemisiifolia) in sunflowers and grain legumes.

open access: green, 2014
Christine Tümmler   +4 more
openalex   +1 more source
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Ragweed Is in the Air: Ambrosia L. (Asteraceae) and pollen allergens in a changing world.

Current protein and peptide science, 2022
Globally Ambrosia species (Asteraceae), commonly called ragweed, are recognized to be one of the most problematic groups of invasive weeds and one of the main allergenic genus.
Montagnani Chiara   +2 more
semanticscholar   +1 more source

Changes in the composition of the soil seed bank of grassland after giant ragweed (Ambrosia trifida L.) invasion.

Journal of Environmental Management, 2022
Giant ragweed (Ambrosia trifida L.), an invasive weed, has an expanding distribution area and has recently started to spread in grasslands. This unusual event threatens grasslands worldwide.
Hanyue Wang   +6 more
semanticscholar   +1 more source

Efficacy and Safety of Ragweed SLIT-Tablet in Children with Allergic Rhinoconjunctivitis in a Randomized, Placebo-Controlled Trial.

Journal of Allergy and Clinical Immunology: In Practice, 2020
BACKGROUND Ragweed SLIT-tablet reduces symptoms and symptom-relieving medication use in adults with allergic rhinitis with or without conjunctivitis (AR/C) but has not been evaluated in children. OBJECTIVE This international, multi-center, double-blind,
H. Nolte   +5 more
semanticscholar   +1 more source

RAGWEED POLLEN DENSITY

American Journal of Botany, 1963
Harrington, James B., Jr., and Kurt Metzger. (U. Michigan, Ann Arbor.) Ragweed pollen densitv. Amor. Jour. Bot. 50(6) : 532–539. Illus. 1963.—The density of ragweed pollen has been measured using a Beckman gas pyenometer. Commercially dried pollen of Ambrosia artemisiifolia in moisture equilibrium with air at 52% relative humidity had an effective ...
Harrington, James B., Metzger, Kurt
openaire   +2 more sources

Maintaining ragweed cultures

Journal of Allergy, 1961
Abstract A practical method is described for maintaining ragweed cultures. Fruits are stripped from mature wild or cultivated plants in the fall, winnowed, and placed in appropriately labeled cloth bags. These are soaked for an hour in warm water, placed on clean sand in wooden flats and covered with another inch of sand.
W W, PAYNE, W F, KLEINSCHMIDT
openaire   +2 more sources

Inhalation challenge with ragweed pollen in ragweed-sensitive asthmatics

Journal of Allergy and Clinical Immunology, 1983
We reexamined the ability of inhaled ragweed pollen to induce bronchoconstriction in ragweed-sensitive asthmatic patients using a turbo-inhaler to administer pollen quantitatively. Adult subjects were selected for study on the basis of fall season asthmatic attacks, positive skin test, histamine release, RAST, and bronchial challenge responses to ...
G L, Rosenberg   +2 more
openaire   +2 more sources

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