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The representation is made on a temperature-relative humidity, instead of a standard psychrometric chart. The comfort zone in blue represents the 90% of acceptability, which means the conditions between -0.5 and +0.5 PMV, or PPD < 10%.
This image or file is a work of a U.S. Army Corps of Engineers soldier or employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image is in the public domain
Weed control is a type of pest control, which attempts to stop or reduce growth of weeds, especially noxious weeds, with the aim of reducing their competition with desired flora and fauna including domesticated plants and livestock, and in natural settings preventing non native species competing with native species.
Some weed control is preventative, implementing protocols to stop weeds from invading new areas. Cultural weed control involves shaping the managed environment to make it less favorable for weeds. [56] [57] Once weeds are present in an area, a wide variety of means to destroy the weeds and their seeds can be employed. Since weeds are highly ...
Paraguayan brick weed known as Piedra. Brick weed is a curing and packaging method of cannabis cultivation that consists in drying the bud for a short period, if at all, and pressing it with a hydraulic press, compacting the whole plant (bud, stems and seeds) into a brick, hence the name brick weed. This method is mainly used in the top ...
The BBCH-scale (weed) identifies the phenological development stages of weed species. It is a plant species specific version of the BBCH-scale. D = Dicotyledons G = Gramineae M = Monocotyledons P = Perennial plants V = Development from vegetative parts or propagated organs
The upright, reddish-brown linear seed capsule splits from the apex and curls open. It bears many minute brown seeds, about 300 to 400 per capsule and 80,000 per plant. The seeds have silky hairs to aid wind dispersal and are very easily spread by the wind, often becoming a weed and a dominant species on disturbed ground. Once established, the ...
The species are cultivated as a grain or vegetable crop (such as in lieu of spinach), as well as animal feed in Asia [14] [15] and Africa, whereas in Europe and North America, it is commonly regarded as a weed in places such as potato fields, [16] while in Australia it is naturalised in all states and regarded as an environmental weed in New ...
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