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Desmodium
''Desmodium'' is a genus of plants in the legume family Fabaceae, sometimes called tick-trefoil, tick clover, hitch hikers or beggar lice. There are dozens of species and the delimitation of the genus has shifted much over time. Species are distributed widely – from Quebec to northern Argentina in the Americas, across northern and southern tropical Africa, in the southern Arabian Peninsula, in Myanmar and Thailand, New Guinea, and northern and eastern Australia. Description These are mostly inconspicuous plants; few have bright or large flowers. Though some can become sizeable plants, most are herbs or small shrubs. Their fruit are loments, meaning each seed is dispersed individually enclosed in its segment. This makes them tenacious plants and some species are considered weeds in places. Uses Several ''Desmodium'' species release organic compounds, aerially and into the soil, which make them useful for agriculture: Allelopathic compounds are used there via push-pull tech ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Desmodium Intortum
''Desmodium intortum'', known as greenleaf desmodium and also as beggarlice along with other members of its genus, is a species of flowering plant in the genus ''Desmodium'', native to Mexico, Central America, northern South America, the Galápagos, Haiti and Jamaica. A nitrogen-fixing fodder crop, it has been introduced to the rest of the world's tropics, including Africa, India, Australia, New Guinea and Taiwan ''Desmodium intortum'' is used in push–pull agricultural pest management since it contains potent secondary metabolites that are released into the soil and aerially. Inter-cropped in maize and sorghum ''Sorghum bicolor'', commonly called sorghum () and also known as great millet, broomcorn, guinea corn, durra, imphee, jowar, or milo, is a species in the Poaceae, grass genus ''Sorghum (genus), Sorghum'' cultivated for its grain. The grain i ... fields, it repels '' Chilo partellus'', a stem-boring grass moth, and suppresses witchweeds, including Asiatic witch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Desmodium Uncinatum
''Desmodium uncinatum'', the silverleaf desmodium, is a species of flowering plant in the family Fabaceae, native to Latin America, and introduced as a fodder Fodder (), also called provender (), is any agriculture, agricultural foodstuff used specifically to feed domesticated livestock, such as cattle, domestic rabbit, rabbits, sheep, horses, chickens and pigs. "Fodder" refers particularly to food ... to various locales in Africa, India, New Guinea, Australia and Hawaii. Although chiefly a fodder, it can also be used for pasture, deferred feed, cut-and-carry, hay, ground cover, and mulch. It is considered invasive in Australia and Hawaii. This species of ''Desmodium'' has also found use in the push-pull technology for pest management where it is grown as an intercrop between rows of a cereal crop to control stem-boring insects and fall armyworms. Together with '' D. intortum'' (greenleaf desmodium) they are the most common two intercrops of push-pull technology. Referen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Desmodium Incanum
:''The ''Desmodium incanum'' of many older sources is actually '' Desmodium laxiflorum''; see below.'' ''Desmodium incanum'', also known as creeping beggarweed, Spanish clover, Spanish tick-trefoil or hitchhikers is a perennial plant native to Central and South America. In Hawaii it is known as kaimi or kaimi clover from the Hawaiian for "seeker". Initially introduced as forage crop around the world, it has spread to many places although it is no longer an important fodder crop. It is considered a weed both within and outside its native range. It has spread through Florida and across the southern USA into southern Texas and across many Pacific islands, including Hawaii. The plant has branched runners for reproduction. Its leaves are elliptic in shape and are hairy, and its flowers are pink to rose in color. Very frustrating in agriculture are its seedpods, which when ripe easily break off from the plant. They are also covered in sticky hairs (trichomes) that stick to any rough ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Striga
''Striga'', commonly known as witchweed, is a genus of parasitic plants that occur naturally in parts of Africa, Asia, and Australia. It is currently classified in the family Orobanchaceae, although older classifications place it in the Scrophulariaceae. Some species are serious pathogens of cereal crops, with the greatest effects being in savanna agriculture in Africa. It also causes considerable crop losses in other regions, including other tropical and subtropical crops in its native range and in the Americas. The generic name derives from Latin wikt:striga#Latin, ''strī̆ga'', "witch". Witchweeds are characterized by bright-green stems and leaves and small, brightly colored and attractive flowers.Sand, Paul, Robert Eplee, and Randy Westbrooks. ''Witchweed Research and Control in the United States''. Champaign, IL: Weed Science Society of America, 1990. They are obligate parasite, obligate hemiparasites of roots and require a living host for germination and initial developmen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grass Moth
Crambidae comprises the grass moth family of lepidopterans. They are variable in appearance, with the nominal subfamily Crambinae (grass moths) taking up closely folded postures on grass stems where they are inconspicuous, while other subfamilies include brightly coloured and patterned insects that rest in wing-spread attitudes. In many classifications, the Crambidae have been treated as a subfamily of the Pyralidae or snout moths. The principal difference is a structure in the tympanal organs called the praecinctorium, which joins two tympanic membranes in the Crambidae, and is absent from the Pyralidae. The latest review by Munroe and Solis, in Kristensen (1999), retains the Crambidae as a full family. The family currently comprises 15 subfamilies with altogether 10,347 species in over 1,000 genera. Systematics *subfamilia incertae sedis **''Conotalis'' Hampson, 1919 **''Exsilirarcha'' Salmon & Bradley, 1956 *Subfamily Acentropinae Stephens, 1836 *Subfamily Crambinae Latre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Striga Hermonthica
''Striga hermonthica'', commonly known as purple witchweed or giant witchweed, is a hemiparasitic plant that belongs to the family Orobanchaceae. It is devastating to major crops such as sorghum (''Sorghum bicolor'') and rice (''Oryza sativa''). In sub-Saharan Africa, apart from sorghum and rice, it also infests maize (''Zea mays''), pearl millet (''Pennisetum glaucum''), and sugar cane (''Saccharum officinarum''). ''Striga hermonthica'' has undergone horizontal gene transfer from ''Sorghum'' to its nuclear genome. The ''S. hermonthica'' gene, ''ShContig9483'', is most like a ''Sorghum bicolor'' gene, and additionally shows significant but lesser similarity to a gene from ''Oryza sativa''. It shows no similarity to any known eudicot gene. Host and symptoms Purple witchweed infects a variety of grasses and legumes in sub-saharan Africa, including rice, maize, millet, sugarcane, and cowpea. The symptoms mimic that of drought or nutrient-deficiency symptoms. Chlorosis, wilt, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fabaceae
Fabaceae () or Leguminosae,International Code of Nomenclature for algae, fungi, and plants. Article 18.5 states: "The following names, of long usage, are treated as validly published: ....Leguminosae (nom. alt.: Fabaceae; type: Faba Mill. Vicia L.; ... When the Papilionaceae are regarded as a family distinct from the remainder of the Leguminosae, the name Papilionaceae is conserved against Leguminosae." English pronunciations are as follows: , and . commonly known as the legume, pea, or bean family, is a large and agriculturally important family of |
Allomone
An allomone (from Ancient Greek ' "other" and pheromone) is a type of semiochemical produced and released by an individual of one species that affects the behaviour of a member of another species to the benefit of the originator but not the receiver. Production of allomones is a common form of defense against predators, particularly by plant species against insect herbivores. In addition to defense, allomones are also used by organisms to obtain their prey or to hinder any surrounding competitors. Many insects have developed ways to defend against these plant defenses (in an evolutionary arms race). One method of adapting to allomones is to develop a positive reaction to them; the allomone then becomes a kairomone. Others alter the allomones to form pheromones or other hormones, and yet others adopt them into their own defensive strategies, for example by regurgitating them when attacked by an insectivorous insect. A third class of allelochemical (chemical used in interspe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Loment .
A loment (or lomentum) is a part of certain legume plants. It is a type of dehiscent fruit that breaks apart at the constrictions occurring between segments, so that each segment contains only one seed. It is a type of schizocarp. Tick trefoil (''Desmodium'') and sweet vetch ('' Hedysarum'') are two genera that exhibit this fruit type, which is found particularly in the tribe Hedysareae of the family Fabaceae Fabaceae () or Leguminosae,International Code of Nomen ... References Fruit morphology Fabaceae {{Agri-stub ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Striga Asiatica
''Striga asiatica'', the Asiatic witchweed or the red witchweed, is a hemiparasitic plant in the family Orobanchaceae. It is native to Asia and sub-Saharan Africa, but has been introduced into other parts of the world including Australia and the United States. Asiatic witchweed is a serious agricultural pest, as it parasitises important crop species, including corn, rice, sorghum, and sugar cane, often causing substantial yield reductions. While it is native to Africa and Asia, it is invasive in farmlands of Kenya, Tanzania and Uganda. In the US, this witchweed was discovered in the Carolinas in 1956. It is considered an invasive agricultural pest, and a vigorous eradication campaign has reduced the affected area by 99% rom to about Biological control Biological control or biocontrol is a method of controlling pests, whether pest animals such as insects and mites, weeds, or pathogens affecting animals or plants by using other organisms. It relies on predation, pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
