ragweed

Tree pollination occurs in the early part of the year, followed by grass pollination in spring and early summer and ragweed in the late summer and early autumn months.

Estimates of Common Ragweed Pollen Production for Urban Ragweed Plants.

According to the American College of Allergy, Asthma & Immunology, ragweed is one of the more common triggers of autumnal allergies.

Seeds of common ragweed were sown in soil in an unheated greenhouse at the Institute of Plant Protection, Hunan Academy of Agricultural Sciences, Changsha, China (25.354947[degrees]N, 114.56111[degrees]E).

There have been a few guesses, from ragweed to wild parsley, but no one can be sure.

The company said SHIELDEX 400SC controls a wide range of broadleaf and grass weeds, including troublesome weed, tall waterhemp, Palmer amaranth, giant ragweed and giant foxtail.

Many people regard spring as the prime pollen season, but one type reaches peak levels during the early fall: ragweed, a flower that can cause allergic rhinitis, also called hay fever, which affects approximately 23,000,000 people in the U.S., points out Blueair AB, an international indoor air cleaning technology company.

Unhealthy levels of smog and ragweed pollen, which are results of climate change, have put millions of people at risk of irritated eyes, noses, and lungs, a recent study said.

(1) While SLIT has been used outside the United States for decades, the US Food and Drug Administration (FDA) has recently approved 4 SLIT allergen extract products (tablets) for treatment of the symptoms and morbidity associated with grass pollen, ragweed, or house dust mite AR, with or without conjunctivitis.

(1) In this issue of EHP, scientists estimate how changing growth trends in ragweed may affect future pollen allergies in Europe, where the plant is a nonnative invasive weed.

M2 PHARMA-February 16, 2017-ALK's registration application for ragweed SLIT-tablet in Europe accepted for review