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Weed Control
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. Weed control is important in agriculture. Methods include hand cultivation with hoe (tool), hoes, powered cultivation with cultivators, smothering with mulch, lethal wilting with high heat, burning, and Benthiocarb, chemical control with herbicides (weed killers). Need for control Weeds compete with productive crops or pasture. They can be poisonous, distasteful, produce burrs, thorns, or otherwise interfere with the use and management of desirable plants by contaminating harvests or interfering with livestock. Weeds compete with crops for space, nutrients, water and light. Smaller, slower growing seedlings are more susceptible than those that are larger and more ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MIGRANTS WEED SUGAR BEETS FOR $2
Migrant is a term that may refer to: Human migration *Human migration, including: **Emigration, leaving one's resident country with the intent to settle elsewhere. 1988 Webster's Definition. One who migrates, esp. from 1 region to another in search of seasonal work., **Immigration, movement into a country with the intent to settle **Economic migrant, someone who emigrates from one region to another to seek an improvement in living standards **Internal migration, within one geopolitical entity, usually a nation-state **Migrant worker, one who migrates, possibly to another country, for work **Expatriate Other uses *Bird migration, regular seasonal movement of birds between breeding and wintering grounds *Migrant (album), ''Migrant'' (album), by American rock band The Dear Hunter *Migrants (Stewart Lee's Comedy Vehicle), "Migrants" (''Stewart Lee's Comedy Vehicle''), a TV episode See also * Migrant literature * Migration (other) * Immigrant (other) * The Emigra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Broad Beans
''Vicia faba'', commonly known as the broad bean, fava bean, or faba bean, is a species of vetch, a flowering plant in the pea and bean family Fabaceae. It is widely cultivated as a crop for human consumption, and also as a cover crop. Varieties with smaller, harder seeds that are fed to horses or other animals are called field bean, tic bean or tick bean. This legume is commonly consumed in many national and regional cuisines. Some people suffer from favism, a hemolytic response to the consumption of broad beans, a condition linked to a metabolic disorder known as G6PDD. Otherwise the beans, with the outer seed coat removed, can be eaten raw or cooked. With young seed pods, the outer seed coat can be eaten, and in very young pods, the entire seed pod can be eaten. Description ''Vicia faba'' is a stiffly erect, annual plant tall, with two to four stems that are square in cross-section. The leaves are long, pinnate with 2–7 leaflets, and glaucous (grey-green). Unl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clubroot
Clubroot is a common disease of cabbages, broccoli, cauliflower, Brussels sprouts, radishes, turnips, Matthiola, stocks, Erysimum, wallflowers and other plants of the family Brassicaceae (Cruciferae). It is caused by ''Plasmodiophora brassicae'', which was once considered a slime mold but is now put in the group Phytomyxea. It is the first phytomyxean for which the genome has been sequenced. It has as many as thirteen races. Gall formation or distortion takes place on latent roots and gives the shape of a club or spindle (textiles), spindle. In the cabbage such attacks on the roots cause undeveloped heads or a failure to head at all, followed often by decline in vigor or by death. It is an important disease, affecting an estimated 10% of the total cultured area worldwide. Historical reports of clubroot date back to the 13th century in Europe. In the late 19th century, a severe epidemic of clubroot destroyed large proportions of the cabbage crop in St. Petersburg. The Russian sci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shepherd's Purse
''Capsella bursa-pastoris'', known as shepherd's purse or lady's purse because of its triangular flat fruits, which are purse-like, is a small annual and ruderal flowering plant in the mustard family (Brassicaceae). Scientists have referred to this species as a protocarnivore, since it has been found that its seeds attract and kill nematodes as a means to locally enrich the soil. It is native to Eurasia but is naturalized and considered a common weed in many parts of the world, especially in colder climates. It has a number of culinary uses. Description ''Capsella bursa-pastoris'' plants grow from a rosette of lobed leaves at the base. From the base emerges a stem most often tall, but occasionally as much as or as little as , which bears a few pointed leaves which partly grasp the stem. The flowers, which appear in any month of the year in the British Isles, are white and small, in diameter, with four petals and six stamens. They are borne in loose racemes, and produc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charlock
''Rhamphospermum arvense'', (syns. ''Brassica arvensis'' and ''Sinapis arvensis'') the charlock mustard, field mustard, wild mustard, or just charlock, is an annual or winter annual plant in the family Brassicaceae. It is found in the fields of North Africa, Asia, Europe, and some other areas where it has been transported and naturalized. '' Pieris rapae'', the small white butterfly, and '' Pieris napi'', the green veined white butterfly, are significant consumers of charlock during their larval stages. Description ''Rhamphospermum arvense'' reaches on average in height, but under optimal conditions can exceed one metre. The stems are erect, branched and striated, with coarse spreading hairs especially near the base. The leaves are petiolate (stalked) with a length of . The basal leaves are oblong, oval, lanceolate, lyrate, pinnatifid to dentate, long, wide. The cauline leaves are much reduced and are short petiolate to sessile but not auriculate-clasping. It blooms from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allelopathic
Allelopathy is a biological phenomenon by which an organism produces one or more biochemicals that influence the germination, growth, survival, and reproduction of other organisms. These biochemicals are known as allelochemicals and can have beneficial (positive allelopathy) or detrimental (negative allelopathy) effects on the target organisms and the community. Allelopathy is often used narrowly to describe chemically-mediated competition between plants; however, it is sometimes defined more broadly as chemically-mediated competition between any type of organisms. The original concept developed by Hans Molisch in 1937 seemed focused only on interactions between plants, between microorganisms and between microorganisms and plants. Allelochemicals are a subset of secondary metabolites, which are not directly required for metabolism (i.e. growth, development and reproduction) of the allelopathic organism. Allelopathic interactions are an important factor in determining species dist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Creeping Buttercup
''Ranunculus repens'', the creeping buttercup, is a flowering plant in the buttercup family Ranunculaceae, native to Europe, Asia and northwestern Africa. Habitat It is a very common weed of agricultural land and gardens, spreading quickly by its rooting stolons and resisting removal with a deeply anchored filamentous root ball. In Ireland: very common in damp places, ditches and flooded areas.Hackney, P. (1992). ''Stewart and Corry's Flora of the North-east of Ireland.'' Third Edition. Institute of Irish Studies and The Queen's University of Belfast . Cultivation and uses Creeping buttercup was sold in many parts of the world as an ornamental plant, and has now become an invasive species in many parts of the world. Like most buttercups, ''Ranunculus repens'' is poisonous, although these poisons are lost when dried with hay. The taste of buttercups is acrid, so cattle Cattle (''Bos taurus'') are large, domesticated, bovid ungulates widely kept as livestock. They ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elymus Repens
''Elymus repens'', commonly known as couch grass, is a very common perennial species of grass native to most of Europe, Asia, the Arctic, and northwest Africa. It has been brought into other mild northern climates for forage or erosion control, but is often considered a weed. Other names include common couch, twitch, quick grass, quitch grass (also just quitch), dog grass, quackgrass, scutch grass, and witchgrass.Flora of NW Europe''Elytrigia repens''/ref>Flora of China''Elytrigia repens''/ref> Description It has creeping rhizomes which enable it to grow rapidly across grassland. It has flat, hairy leaves with upright flower spikes. The stems ( 'culms') grow to tall; the leaves are linear, long and broad at the base of the plant, with leaves higher on the stems broad. The flower spike is long, with spikelets long, broad and thick with three to eight florets. The glumes are long, usually without an awn or with only a short one. It flowers at the end of June through to A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxalis
''Oxalis'' ( (British English) or (American English)) is a large genus of flowering plants in the wood-sorrel family, Oxalidaceae, comprising over 550 species. The genus occurs throughout most of the world, except for the polar areas; species diversity is particularly rich in tropical Brazil, Mexico, and South Africa. Many of the species are known as wood-sorrels (also as wood sorrels or woodsorrels) as they have an acidic taste reminiscent of the sorrel proper (''Rumex acetosa''), which is not closely related. Some species are called yellow sorrels or pink sorrels after the colour of their flowers instead. Other species are colloquially known as false shamrocks, and some called sourgrasses. For the genus as a whole, the term oxalises is also used. Description The plants are annual or perennial. The leaves are divided into three to ten or more obovate and top-notched leaflets, arranged palmately with all the leaflets of roughly equal size. The majority of species have three ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lesser Celandine
''Ficaria verna'' (formerly ''Ranunculus ficaria'' ), commonly known as lesser celandine or pilewort, is a low-growing, hairless perennial flowering plant in the buttercup family Ranunculaceae. It has fleshy dark green, heart-shaped leaves and distinctive flowers with bright yellow, glossy petals.Functional optics of glossy buttercup flowers Journal of the Royal Society Interface 14:20160933Buttercups focus light to heat their flowers and attract insects New Scientist 25 February 2017 [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bulbil
A bulbil (also referred to as a bulbel, bulblet, and/or pup) is a small, young plant that is reproduced vegetatively from axillary buds on the parent plant's stem or in place of a flower on an inflorescence. These young plants are clones of the parent plant that produced them—they have identical genetic material. The formation of bulbils is a form of asexual reproduction, as they can eventually go on to form new stand-alone plants. Although some bulbils meet the botanical criterion to be considered a true bulb, there are a variety of different morphological forms of bulbils, some of which are not considered to be bulbs. Hence the reason for distinction between bulbs and bulbils. For example, some bulbous plant groups, like onions and lilies, produce bulbils in the form of a secondary, small bulb. Onion and lily bulbils meet the botanical criterion to be labeled a true bulb. All bulbils produced by bulbous plants are to be considered bulbs, but not all bulbils are to be consider ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perennial Plant
In horticulture, the term perennial (''wikt:per-#Prefix, per-'' + ''wikt:-ennial#Suffix, -ennial'', "through the year") is used to differentiate a plant from shorter-lived annual plant, annuals and biennial plant, biennials. It has thus been defined as a plant that lives more than 2 years. The term is also loosely used to distinguish plants with little or no woody growth (secondary growth in Tree girth measurement, girth) from trees and shrubs, which are also technically ''perennials''. Notably, it is estimated that 94% of plant species fall under the category of perennials, underscoring the prevalence of plants with lifespans exceeding two years in the botanical world. Perennials (especially small flowering plants) that grow and bloom over the spring and summer, die back every autumn and winter, and then return in the spring from their rootstock or other overwintering structure, are known as Herbaceous plant, herbaceous perennials. However, depending on the rigours of the loca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
