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Digitaria Cruciata
''Digitaria'' is a genus of plants in the grass family native to tropical and warm temperate regions but can occur in tropical, subtropical, and cooler temperate regions as well. Common names include crabgrass, finger-grass, and fonio. They are slender monocotyledonous annual and perennial lawn, pasture, and forage plants; some are often considered lawn pests. ''Digitus'' is the Latin word for "finger", and they are distinguished by the long, finger-like inflorescences they produce. Uses The seeds are edible, most notably those of fonio (''Digitaria exilis'' and '' Digitaria iburua''), ''Digitaria sanguinalis'', as well as '' Digitaria compacta''. They can be toasted, ground into a flour, made into porridge or fermented to make beer. Fonio has been widely used as a staple crop in parts of Africa. It also has decent nutrient qualities as a forage for cattle. Lawns The prevalent species of ''Digitaria'' in North America are large crabgrass (''D. sanguinalis''), sometimes kno ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Digitaria Sanguinalis
''Digitaria sanguinalis'' is a species of Poaceae, grass known by several common names, including hairy crabgrass, hairy finger-grass, large crabgrass, crab finger grass, purple crabgrass. It is one of the better-known species of the genus ''Digitaria'', and one that is known nearly worldwide as a common weed. It is used as animal fodder, and the seeds are edible and have been used as a grain in Germany and especially Poland, where it is sometimes cultivated. This has earned it the name Polish millet. Description It is an annual grass with an inflorescence of up to nine very long, very thin, radiating branches atop its stems. Each branch is lined with pairs of very tiny raceme, spikelets. The inflorescences may be reddish or purplish. Image:Digitaria sanguinalis.jpg Image:Harig_vingergras_detail_plant_(Digitaria_sanguinalis).jpg Image:Harig vingergras ligula (Digitaria sanguinalis).jpg Image:Digitaria sanguinalis inflorescence.jpg Uses During the European Middle Ages, ''Digit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Africa
Africa is the world's second-largest and second-most populous continent after Asia. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 20% of Earth's land area and 6% of its total surface area.Sayre, April Pulley (1999), ''Africa'', Twenty-First Century Books. . With nearly billion people as of , it accounts for about of the world's human population. Demographics of Africa, Africa's population is the youngest among all the continents; the median age in 2012 was 19.7, when the worldwide median age was 30.4. Based on 2024 projections, Africa's population will exceed 3.8 billion people by 2100. Africa is the least wealthy inhabited continent per capita and second-least wealthy by total wealth, ahead of Oceania. Scholars have attributed this to different factors including Geography of Africa, geography, Climate of Africa, climate, corruption, Scramble for Africa, colonialism, the Cold War, and neocolonialism. Despite this lo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Digitaria Cognata
''Digitaria cognata'' is a species of grass known by the common names fall witchgrass,''Digitaria cognata''. USDA Plants Profile. Carolina crabgrass,''Digitaria cognata''. USDA NRCS Plant Fact Sheet. and mountain hairgrass.''Digitaria cognata''. NatureServe. Description This grass is a perennial without s. The roots are shallow. The erect stems grow ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Digitaria Ciliaris
''Digitaria ciliaris'' is a species of grass known by the common names southern crabgrass,''Digitaria ciliaris''. USDA Plants Profile. tropical finger-grass, tropical crabgrass or summer grass. . The grass is known as "ගුරු තණ - guru thana" in . Distribution ''Digitaria ciliaris'' is a tough plant, believed to have originated in Asia but now found all over the tropical belt of the p ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Digitaria Californica
''Digitaria californica'' is a species of grass known by the common name Arizona cottontop. It is native to the Americas, where it can be found in the southwestern United States, Mexico, Central America, and South America.''Digitaria californica''. Grass Manual Treatment. This perennial grass forms a clump of stems reaching up to a meter in height. The branching root system can reach one meter deep. There are no s or s. The leaf sheaths around the stems can be very hairy to woolly. The leaves are usually short and narrow. The |
Digitaria Brownii
''Digitaria brownii'', also known as cotton grass or cotton panic grass, is a species of perennial grass in the genus of Digitaria. Description The maximum height for ''D. brownii'' is with the average height being . Its flat hairless leaves are in length and wide, with rough and wavy margins, and a drawn-out straight point. It has spikelets, with white, brownish, or purple hairs. Distribution and habitat ''Digitaria brownii'' is indigenous to all states of Australia except for Tasmania Tasmania (; palawa kani: ''Lutruwita'') is an island States and territories of Australia, state of Australia. It is located to the south of the Mainland Australia, Australian mainland, and is separated from it by the Bass Strait. The sta .... Additionally, it has been introduced to India. It grows well in sandy and loamy clay soils. References External links Factsheet - Digitaria browniiCotten Panic Grass- DPI Australia {{Taxonbar, from=Q15503647 brownii Flora of Au ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Digitaria Bicornis
''Digitaria'' is a genus of plants in the grass family native to tropical and warm temperate regions but can occur in tropical, subtropical, and cooler temperate regions as well. Common names include crabgrass, finger-grass, and fonio. They are slender monocotyledonous annual and perennial lawn, pasture, and forage plants; some are often considered lawn pests. ''Digitus'' is the Latin word for "finger", and they are distinguished by the long, finger-like inflorescences they produce. Uses The seeds are edible, most notably those of fonio ('' Digitaria exilis'' and '' Digitaria iburua''), ''Digitaria sanguinalis'', as well as '' Digitaria compacta''. They can be toasted, ground into a flour, made into porridge or fermented to make beer. Fonio has been widely used as a staple crop in parts of Africa. It also has decent nutrient qualities as a forage for cattle. Lawns The prevalent species of ''Digitaria'' in North America are large crabgrass (''D. sanguinalis''), sometimes kn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Herbicide
Herbicides (, ), also commonly known as weed killers, are substances used to control undesired plants, also known as weeds.EPA. February 201Pesticides Industry. Sales and Usage 2006 and 2007: Market Estimates. Summary in press releasMain page for EPA reports on pesticide use ihere Selective herbicides control specific weed species while leaving the desired crop relatively unharmed, while non-selective herbicides (sometimes called "total weed killers") kill plants indiscriminately. The combined effects of herbicides, nitrogen fertilizer, and improved cultivars has increased yields (per acre) of major crops by three to six times from 1900 to 2000. In the United States in 2012, about 91% of all herbicide usage, was determined by weight applied, in agriculture. In 2012, world pesticide expenditures totaled nearly US$24.7 billion; herbicides were about 44% of those sales and constituted the biggest portion, followed by insecticides, fungicides, and fumigants. Herbicide is also used ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biological Pest 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, parasitism, herbivory, or other natural mechanisms, but typically also involves an active human management role. It can be an important component of integrated pest management (IPM) programs. There are three basic strategies for biological control: classical (importation), where a natural enemy of a pest is introduced in the hope of achieving control; inductive (augmentation), in which a large population of natural enemies are administered for quick pest control; and inoculative (conservation), in which measures are taken to maintain natural enemies through regular reestablishment. Natural enemies of insects play an important part in limiting the densities of potential pests. Biological control agents such as these include predators, parasitoids, pathogens, and com ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Weed
A weed is a plant considered undesirable in a particular situation, growing where it conflicts with human preferences, needs, or goals.Harlan, J. R., & deWet, J. M. (1965). Some thoughts about weeds. ''Economic botany'', ''19''(1), 16-24. Plants with characteristics that make them hazardous, aesthetically unappealing, difficult to control in managed environments, or otherwise unwanted in agriculture, farm land, Orchard, orchards, gardens, lawns, Park, parks, recreational spaces, residential and industrial areas, may all be considered weeds.Holzner, W., & Numata, M. (Eds.). (2013). ''Biology and ecology of weeds'' (Vol. 2). Springer Science & Business Media. The concept of weeds is particularly significant in agriculture, where the presence of weeds in fields used to grow crops may cause major losses in yields. Invasive species, plants introduced to an environment where their presence negatively impacts the overall functioning and biodiversity of the ecosystem, may also sometime ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Digitaria Ischaemum
''Digitaria ischaemum'' is a species of Digitaria, crabgrass known by the common names smooth crabgrass and small crabgrass. It is native to Europe and Asia, but it is known throughout much of the warm temperate world as an introduced species and often a common roadside and garden weed. It is an annual grass producing an inflorescence with two or more narrow branches lined with tiny spikelets. It is easily confused with other members in the genus, particularly southern crabgrass in California which differs by having spikelets of nearly twice the length. It may also be confused with Bermuda Grass, but differs in being a much taller plant with a much longer inflorescence. It reproduces by seed. The leaves on this grass often form above the base of the plant, and it is usually singular, rarely forming large clumps. Description The flowers of smooth crabgrass grow in clusters of 2 to 6, forming spike-like shapes about 1½ to 4 inches long, arranged like fingers at the tips of branch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
