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Aerial Topdressing
Aerial topdressing is the aerial application of fertilisers over farmland using agricultural aircraft. It was developed in New Zealand in the 1940s and rapidly adopted elsewhere in the 1950s. Origins Previous aerial applications The first known aerial application of agricultural materials was by John Chaytor, who spread seed over a swamped valley floor in Wairoa, New Zealand, in 1906 using a hot air balloon with mobile tethers. The first known use of a heavier-than-air machine in aerial application was on 3 August 1921 when, as a result of advocacy by Dr Coad, a USAAC Curtiss JN4 Jenny piloted by John A. Macready was used to spread lead arsenate to kill catalpa sphinx caterpillars near Troy, Ohio, United States. The first commercial operations were attempted in the US in 1924 and use of insecticide and fungicide for crop dusting slowly spread in the Americas and, to a lesser extent, other nations. Crop dusting poisons enjoyed a boom in the US and Europe after World War II ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aerial Application
Aerial application, or what is informally referred to as crop dusting, involves spraying crops with crop protection products from an agricultural aircraft. Planting certain types of seed are also included in aerial application. The specific spreading of fertilizer is also known as ''aerial topdressing ''in some countries. Many countries have severely limited aerial application of pesticides and other products because of environmental and public health hazards like spray drift; most notably, the European Union banned it outright with a few highly restricted exceptions in 2009, effectively ending the practice in all member states. Agricultural aircraft are highly specialized, purpose-built aircraft. Today's agricultural aircraft are often powered by turbine engines of up to and can carry as much as of crop protection product. Helicopters are sometimes used, and some aircraft serve double duty as water bombers in areas prone to wildfires. These aircraft are referred to as SEAT ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crop Dusting
Aerial application, or what is informally referred to as crop dusting, involves spraying crops with crop protection products from an agricultural aircraft. Planting certain types of seed are also included in aerial application. The specific spreading of fertilizer is also known as ''aerial topdressing ''in some countries. Many countries have severely limited aerial application of pesticides and other products because of environmental and public health hazards like spray drift; most notably, the European Union banned it outright with a few highly restricted exceptions in 2009, effectively ending the practice in all member states. Agricultural aircraft are highly specialized, purpose-built aircraft. Today's agricultural aircraft are often powered by turbine engines of up to and can carry as much as of crop protection product. Helicopters are sometimes used, and some aircraft serve double duty as water bombers in areas prone to wildfires. These aircraft are referred to as SEAT ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hawkes Bay
Hawke's Bay ( mi, Te Matau-a-Māui) is a local government region on the east coast of New Zealand's North Island. The region's name derives from Hawke Bay, which was named by Captain James Cook in honour of Admiral Edward Hawke. The region is governed by Hawke's Bay Regional Council. Geography The region is situated on the east coast of the North Island. It bears the former name of what is now Hawke Bay, a large semi-circular bay that extends for 100 kilometres from northeast to southwest from Māhia Peninsula to Cape Kidnappers. The Hawke's Bay Region includes the hilly coastal land around the northern and central bay, the floodplains of the Wairoa River in the north, the wide fertile Heretaunga Plains around Hastings in the south, and a hilly interior stretching up into the Kaweka and Ruahine Ranges. The prominent peak Taraponui is located inland. Five major rivers flow to the Hawke's Bay coast. From north to south, they are the Wairoa River, Mohaka River, Tutaekuri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Straits Air Freight Express
Straits Air Freight Express (SAFE) was a cargo airline, established in 1950, named for its Cook Strait focus and connecting the North Island and South Islands of New Zealand's railway systems from the 1950s to the 1970s. The company was renamed Safe Air Limited in 1966 and diversified into aviation maintenance. In 1972 it was bought by the National Airways Corporation, which then merged with Air New Zealand. Safe Air continued to be operated as an independent entity by both owners. It ceased flying in 1990, but has continued to expand as a maintenance facility and now employs approximately 350 staff. In 2015 it was bought by the Australian arm of Airbus. Rail Air In 1947, New Zealand Railways Department (NZR) and the Royal New Zealand Air Force began flying between Paraparaumu and Blenheim with a service that came to be known as Rail Air. SAFE took over the service from the RNZAF in 1950. Much of NZR's inter-island freight moved to its new Inter-island rail ferry service f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PAC Fletcher
Pac or PAC may refer to: Military * Rapid Deployment Force (Malaysia), an armed forces unit * Patriot Advanced Capability, of the MIM-104 Patriot missile * Civil Defense Patrols (''Patrullas de Autodefensa Civil''), Guatemalan militia and paramilitary group Geography * Pac, Albania, a village in Bytyç Organizations Aviation * IATA code PAC Albrook "Marcos A. Gelabert" International Airport in Panama City, Panama * Pacific Aerospace Corporation, New Zealand, manufacturer of aircraft: ** PAC 750XL ** PAC Cresco ** PAC CT/4 ** PAC Fletcher * Pakistan Aeronautical Complex, aerospace manufacturer * Polar Air Cargo airline, Purchase, New York, US Business * Panasonic Avionics Corporation, produces equipment and services for in-flight entertainment etc. * Peruvian Amazon Company, a former rubber company * Planned Amortization Class, a type of collateralized mortgage obligation * Price Activity Chart, in stock technical analysis * Programa de Aceleração do Crescimento, an inves ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bristol Freighter
The Bristol Type 170 Freighter is a British twin-engine aircraft designed and built by the Bristol Aeroplane Company as both a freighter and airliner. Its best known use was as an air ferry to carry cars and their passengers over relatively short distances. A passenger-only version was also produced, known as the Wayfarer. The Freighter was developed during the Second World War, having attracted official attention from the British Air Ministry, which sought the development of a rugged vehicle capable of carrying various cargoes, including a 3-ton truck. Various changes to the design were made to accommodate their requirements, but being completed too late to participate in the conflict, the majority of sales of the Freighter were to commercial operators. In response to customer demand, an enlarged version to maximise vehicle-carrying capacity, known as the Bristol Superfreighter, was developed. Development The Bristol Type 170 was designed as a stop-gap project to provide wor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ford Trimotor
The Ford Trimotor (also called the "Tri-Motor", and nicknamed the "Tin Goose") is an American three-engined transport aircraft. Production started in 1925 by the companies of Henry Ford and ended on June 7, 1933, after 199 had been made. It was designed for the civil aviation market, but also saw service with military units. Design and development In the early 1920s, Henry Ford, along with a group of 19 other investors including his son Edsel, invested in the Stout Metal Airplane Company. Stout, a bold and imaginative salesman, sent a mimeographed form letter to leading manufacturers, blithely asking for $1,000 and adding: "For your one thousand dollars you will get one definite promise: You will never get your money back." Stout raised $20,000, including $1,000 each from Edsel and Henry Ford. In 1925, Ford bought Stout and its aircraft designs. The single-engined Stout monoplane was turned into a trimotor, the Stout 3-AT with three Curtiss-Wright air-cooled radial engine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hunterville
Hunterville is a small community on State Highway 1, in the Rangitikei district of the North Island of New Zealand. It is located halfway between Taupo and Wellington and has a population (2018 census) of 411, a decrease of 18 people from 2013. The township was named for George Hunter, who was a member of the Wellington Provincial Council. It straddles the state highway as well as the main trunk railway in the foothills forming the gateway to the Central Plateau. Kiwiburn, the New Zealand Burning Man regional burn, has been held there since 2014. The closest airport or airfield to Hunterville is RNZAF Base Ohakea, an important Royal New Zealand Air Force base, which is sited 33 km to the south west. 6 km north of Hunterville is Vinegar Hill. The Hunterville railway station on the North Island Main Trunk line opened in 1887 and closed in 1988. Hunterville is well known for its statue of the huntaway, a specialised herding dog that uses its voice to drive the sh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Superphosphate
Triple superphosphate is a component of fertilizer that primarily consists of monocalcium phosphate, Ca(H2PO4)2. Triple superphosphate is obtained by treating phosphate rock with phosphoric acid. Traditional routes for extraction of phosphate rock uses sulfuric acid gives single superphosphate, an approximate 1:1 mixture of Ca(H2PO4)2 and CaSO4 phosphogypsum). Double superphosphate refers to some average of triple- and single superphosphate, resulting from the extraction of phosphate rock with a mixture of phosphoric and sulfuric acids. Many fertilizers are derived from triple superphosphate, e.g. by blending with ammonium sulfate and potassium chloride Potassium chloride (KCl, or potassium salt) is a metal halide salt composed of potassium and chlorine. It is odorless and has a white or colorless vitreous crystal appearance. The solid dissolves readily in water, and its solutions have a salt .... Typical fertilizer-grade triple superphosphate contains 45% P2O5eq, single supe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Forestry
Forestry is the science and craft of creating, managing, planting, using, conserving and repairing forests, woodlands, and associated resources for human and environmental benefits. Forestry is practiced in plantations and natural stands. The science of forestry has elements that belong to the biological, physical, social, political and managerial sciences. Forest management play essential role of creation and modification of habitats and affect ecosystem services provisioning. Modern forestry generally embraces a broad range of concerns, in what is known as multiple-use management, including: the provision of timber, fuel wood, wildlife habitat, natural water quality management, recreation, landscape and community protection, employment, aesthetically appealing landscapes, biodiversity management, watershed management, erosion control, and preserving forests as " sinks" for atmospheric carbon dioxide. Forest ecosystems have come to be seen as the most important componen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Selenium
Selenium is a chemical element with the symbol Se and atomic number 34. It is a nonmetal (more rarely considered a metalloid) with properties that are intermediate between the elements above and below in the periodic table, sulfur and tellurium, and also has similarities to arsenic. It seldom occurs in its elemental state or as pure ore compounds in the Earth's crust. Selenium – from Greek ( 'Moon') – was discovered in 1817 by , who noted the similarity of the new element to the previously discovered tellurium (named for the Earth). Selenium is found in metal sulfide ores, where it partially replaces the sulfur. Commercially, selenium is produced as a byproduct in the refining of these ores, most often during production. Minerals that are pure selenide or selenate compounds are known but rare. The chief commercial uses for selenium today are glassmaking and pigments. Selenium is a semiconductor and is used in photocells. Applications in electronics, once important, have been ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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