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42-548: Standardization is beneficial in achieving interoperability , ensuring products meet certain requirements, commonality, reliability , total cost of ownership , compatibility with logistics systems, and similar defense-related objectives. Defense standards are also used by other non-defense government organizations, technical organizations, and industry. This article discusses definitions, history, and usage of defense standards. Related documents, such as defense handbooks and defense specifications , are also addressed. Although

84-496: A crop rotation or sequence, or in space, with a polyculture or intercropping . Monocultures appear in contexts outside of agriculture and food production. Grass lawns are a common form of residential monocultures. Several monocultures, including single-species forest plantations, have become increasingly abundant throughout the tropics following market globalization, impacting local communities. Genetic monocultures refer to crops that have little to no genetic variation. This

126-418: A field. Monoculture is widely used in intensive farming and in organic farming . In crop monocultures, each plant in a field has the same standardized planting, maintenance, and harvesting requirements resulting in greater yields and lower costs. When a crop is matched to its well-managed environment, a monoculture can produce higher yields than a polyculture. Modern practices such as monoculture planting and

168-710: A fungal disease that spread quickly throughout the Caribbean where they were being grown. By the beginning of the 1960s, growers had to switch to growing the Cavendish banana , a cultivar grown in a similar way. This cultivar is under similar disease stress since all the bananas are clones of each other and could easily succumb as the Gros Michel did. Genetic monoculture can also refer to a single breed of farm animal being raised in large-scale concentrated animal feeding operations (CAFOs). Many livestock production systems rely on just

210-435: A growing demand for chemical management, i.e. pesticides, herbicides, insecticides. A 1999 study showed that in a sample of urban streams, at least one type of pesticide was found in 99% of the streams. A major risk associated with lawn pesticide use is the exposure to chemicals within the home through the air, clothing, and furniture, which can be more detrimental to children than to the average adult. While often referring to

252-617: A likelihood of supplying an enemy if overrun. A complete list of standards was maintained as Department of Defense Index of Specifications and Standards, up until 1993. Standardization Too Many Requests If you report this error to the Wikimedia System Administrators, please include the details below. Request from 172.68.168.132 via cp1112 cp1112, Varnish XID 392112991 Upstream caches: cp1112 int Error: 429, Too Many Requests at Fri, 29 Nov 2024 05:40:58 GMT Monoculture In agriculture , monoculture

294-417: A million hectares of land are being deforested annually to make land for cultivation. Some international companies relevant in the field of agro-extractivist monocultures are Syngenta and Bayer (biotech), Los Grobo, CRESUD, El Tejar, and Maggi (landowners), and Cargill , ADM, and Bunge (grain and seed providers). In forestry , monoculture refers to plantations of one species of tree. In many areas of

336-1226: A negative impact on agricultural productivity and sustainability. The use of unregulated irrigation practices on popular monocultures, such as soy, can also lead to erosion and water loss. As soil health declines, use of synthetic fertilizers on monocultural fields increases, often having negative implications on human health via chemical run-off. In addition to soil depletion, monocultures can cause significant reductions in biodiversity due to unavailability of resources, native species displacement, and loss of genetic variation. Following large-scale oil palm plantations in Latin America, research has revealed extensive declines in mammal, bird, amphibian, and pollinator diversity, particularly in Colombia and Brazil. Due to insufficient biodiversity and population balance, monocultures are associated with higher rates of disease and pest outbreaks. In response, pesticides are widely applied to agricultural fields, further harming insect and pollinator diversity and human health. Increasing rotations of crop monocultures or using alternatives agricultural practices can help mitigate

378-705: A product", while military standards "detail the processes and materials to be used to make the product." Military handbooks, on the other hand, are primarily sources of compiled information and/or guidance. The GAO acknowledges, however, that the terms are often used interchangeably. Official definitions are provided by DoD 4120.24, Defense Standardization Program (DSP) Procedures, November 2014, USD (Acquisition, Technology and Logistics): For purposes of this article, "military standards" will include standards, specifications and handbooks. There are also standard names with different letters behind ′MIL-′ like MIL-C-5040H , MIL-E-7016F or MIL-S-901 . The DOD has standards about

420-459: A small hull leak threatens the whole vessel). If an enemy discovers a drawback in a standardized system, the system's uniformity leaves it vulnerable to complete incapacitation via what might otherwise have been a limited compromise. Also, if standardization promotes use by allies, it may also ease an enemy's task of using materiel that is lost as a prize of war . However, this threat is somewhat academic, as even poorly standardized materiel presents

462-405: A small number of highly specialized breeds. Focusing heavily on a single trait (output) may come at the expense of other desirable traits – such as fertility , resistance to disease, vigor , and mothering instincts. In the early 1990s, a few Holstein calves were observed to grow poorly and died in the first 6 months of life. They were all found to be homozygous for a mutation in

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504-718: Is a traditional practice that incorporates the use of various trees and forage in pastures to increase land and livestock productivity. Incorporating other plants in pastures, such as tree legumes, has been shown to enhance pollinator activity, benefitting local biodiversity and food security. Silvopastoral systems provide greater pasture species richness and grazing feed, increasing economic and environmental outcomes on various size scales. In several studies, well-managed mixed-species plantations have been shown to produce greater economic outcomes than monocultures with regard to timber sales. Mixed-species forests are also associated with greater carbon sequestration and biodiversity, presenting

546-412: Is achieved using cultivars, made through processes of propagation and selective breeding, and can make populations susceptible to disease. Agroecological practices, silvo-pastoral systems, and mixed-species plantations are common alternatives to monoculture that help preserve biodiversity while maintaining productivity. Agricultural monocultures refer to the practice of planting one crop species in

588-562: Is standardized, what is at their discretion, and the details of the standards). In the late 18th century and throughout the 19th, the American and French militaries were early adopters and longtime developmental sponsors and advocates of interchangeability and standardization. By World War II (1939–1945), virtually all national militaries and trans-national alliances of the same ( Allied Forces , Axis powers ) were busy standardizing and cataloguing. The U.S. AN- cataloguing system (Army-Navy) and

630-409: Is the practice of growing one crop species in a field at a time. Monocultures increase ease and efficiency in planting, managing, and harvesting crops short-term, often with the help of machinery. However, monocultures are more susceptible to diseases or pest outbreaks long-term due to localized reductions in biodiversity and nutrient depletion. Crop diversity can be added both in time, as with

672-634: The Gros Michel cultivar of banana represented almost all bananas consumed in the United States because of their taste, small seeds, and efficiency to produce. Their small seeds, while more appealing than the large ones in other Asian cultivars, were not suitable for planting, meaning all new banana plants had to be grown from the cut suckers of another plant. As a result of this asexual form of planting, all bananas grown had identical genetic makeups which gave them no traits for resistance to Fusarium wilt ,

714-573: The wheat leaf rust fungus caused much concern internationally, having already severely affected wheat crops in Uganda and Kenya, and having started to spread in Asia as well. Given the very genetically similar strains of much of the world's wheat crops following the Green Revolution , the impacts of such diseases threaten agricultural production worldwide. In Ireland, exclusive use of one variety of potato,

756-609: The "lumper", led to the Great Famine of 1845–1849. Lumpers provided inexpensive food to feed the Irish masses. Potatoes were propagated vegetatively with little to no genetic variation. When Phytophthora infestans arrived in Ireland from the Americas in 1845, the lumper had no resistance to the disease, leading to the nearly complete failure of the potato crop across Ireland. Until the 1950s,

798-467: The 1800s following European colonization. These plantations used slave labor, setting a precedent for agriculture being a field dominated by foreign entities in the rest of Latin America and the Caribbean. This social framework has shaped the oppression of Black people and smaller-scale farmers in the face of present-day land acquisition for monocultural use. The large-scale establishment of monocultures in

840-653: The American landscape is fairly recent. Aesthetics drove the evolution of the residential green areas, with turfgrass becoming a popular addition to many American homes. Turfgrass is a nonnative species and requires high levels of maintenance. At the local level, governments and organizations, such as Homeowner Associations, have pressured the maintenance of lawn aesthetics and influenced real estate value. Disagreements in residential maintenance of weeds and lawns have resulted in civil cases or direct aggression against neighbors. High levels of maintenance required for turfgrass created

882-713: The British Defence Standards (DEF-STAN) provide examples. For example, due to differences in dimensional tolerances, in World War II American screws , bolts , and nuts did not fit British equipment properly and were not fully interchangeable. Defense standards provide many benefits, such as minimizing the number of types of ammunition, ensuring compatibility of tools, and ensuring quality during production of military equipment. This results, for example, in ammunition and food cases that can be opened without tools; vehicle subsystems that can be quickly swapped into

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924-579: The DOD issued a new memorandum, which eliminated the requirement to obtain a waiver in order to use military specifications or standards. The 2005 memo did not reinstate any canceled military specifications or standards. According to a 2003 issue of Gateway , published by the Human Systems Information Analysis Center, the number of defense standards and specifications have been reduced from 45,500 to 28,300. However, other sources noted that

966-431: The U.S. during the 1980s and early 1990s, it was argued that the large number of standards, nearly 30,000 by 1990, imposed unnecessary restrictions, increased cost to contractors (and hence the DOD, since the costs in the end pass along to the customer), and impeded the incorporation of the latest technology. Responding to increasing criticism, Secretary of Defense William J. Perry issued a memorandum in 1994 that prohibited

1008-572: The US, making the affected population around 600,000 animals. Increasing genetic diversity through the introduction of organisms with varying genes can make agricultural and livestock systems more sustainable. By utilizing crops with varying genetic traits for disease and pest resistance, chances of disease outbreak decrease due to the likelihood of neighboring plants having strain-resistant genes. This can aid in increasing crop productivity while decreasing pesticide usage. Alternatives to monoculture include

1050-423: The capacity to sustain the local community, environment, and economy. Ecosystem-specific ecological damage done by monocultural practices and byproducts, including the use of biocides and soil degradation, can be irreparable. However, the increasing modern prevalence of regenerative farming reinstates crop rotation and natural nutrient cycling to repair biodiversity and improve soil productivity. Silvopasture

1092-429: The community. Profits made from monoculture plantations historically follow a "boom and bust" trend, temporarily benefitting the community in increased income, revenue, and quality of life until resources are exhausted, with profits rarely distributed back into the deforested land. Environmental changes caused by monoculture forests are particularly felt among indigenous communities given their reliance and connection to

1134-510: The consultation of agroecology, silvo-pastoral systems, and mixed-species plantations. Agroecology consults the entire food system, considering how agricultural inputs and outputs affect social, environmental, and economic systems. Despite the recent dominance of GMO monoculture crop rotations of soy, corn, and cotton across the deforested Amazon, many Afrodescendant-run farms in Brazil continue to use traditional practices of agroecology that have

1176-423: The format of standards: Defense standards evolved from the need to ensure proper performance, maintainability and reparability (ease of MRO ), and logistical usefulness of military equipment. The latter two goals (MRO and logistics) favor certain general concepts, such as interchangeability , standardization (of equipment and processes, in general), cataloging , communications, and training (to teach people what

1218-578: The gene that caused bovine leukocyte adhesion deficiency . This mutation was found at a high frequency in Holstein populations worldwide. (15% among bulls in the US, 10% in Germany, and 16% in Japan.) Researchers studying the pedigrees of affected and carrier animals tracked the source of the mutation to a single bull that was widely used in livestock production. In 1990 there were approximately 4 million Holstein cattle in

1260-475: The human neurological, gastrointestinal, skin, and respiratory systems. Agro-extractivism is a form of extractivism in which foreign territorial, political, and economical dominance over agriculture is motivated by the large-scale production and exportation of agricultural commodities, often in the form of monocultures. Several monocultures in the Global South, such as sugar and coffee, were first planted in

1302-433: The land while additionally becoming subject to land privatization. These lands are frequently acquired through land grabbing and dispossession by large companies in global trade, ultimately reducing rural land, cutting off access to locals, and changing agricultural and community dynamics. Lawn monoculture in the United States was historically influenced by English gardens and manor-house landscapes, but its inception into

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1344-501: The number of standards just before the Perry Memorandum was issued was less than 30,000, and that thousands have been canceled since then. This may be due to differences in what is counted as a "military standard". Another potential drawback of thorough standardization is a threat analogous to monoculture (where lack of biodiversity creates higher risk of pandemic disease) or a ship without bulkhead compartmentalization (where even

1386-485: The official definitions differentiate between several types of documents, all of these documents go by the general rubric of "military standard", including defense specifications, handbooks, and standards. Strictly speaking, these documents serve different purposes. According to the Government Accountability Office (GAO), military specifications "describe the physical and/or operational characteristics of

1428-424: The place of damaged ones; and small arms and artillery that are less likely to find themselves with an excess of ammunition that does not fit and a lack of ammo that does. However, the proliferation of standards also has some drawbacks. The main one is that they impose what is functionally equivalent to a regulatory burden upon the defense supply chain, both within the military and across its civilian suppliers. In

1470-681: The produced crop being exported for processing and marketing by large transnational corporations, often in developed countries. For instance, following the North American Free Trade Agreement (NAFTA), agave production increased three-fold in Mexico from 1995 to 2019 due to foreign consumption, specifically by the United States. Pararguay sees similar demands with soy crops, exporting the majority of production without nutrients returning to native soil. More than 46 million hectares of soy has been planted across South America while over half

1512-400: The production of the same crop species in a field (space), monoculture can also refer to the planting of a single cultivar across a larger regional area, such that there are numerous plants in the area with an identical genetic makeup to each other. When all plants in a region are genetically similar, a disease to which they have no resistance can destroy entire populations of crops. As of 2009

1554-608: The risk of disease and attack. Environmental consequences of monocultural farming have notable social impacts, commonly concentrated to the reduction of small-scale farmers and pesticide-related health issues. Monoculture is contradictive to several primitive, more sustainable farming practices utilized by small-scale farmers. Following pest outbreaks, over 600 million liters of pesticides are sprayed annually, contaminating nearby small-scale farming and causing communal health decline. Research has revealed increased prevalence of pesticide-related disorders, diseases, and cancers affecting

1596-919: The tropics and the Global South following rainforest deforestation. While forest monocultures are efficient ways of producing timber, studies show single-species forests reduce biodiversity , causing declines in forest productivity and native tree, animal, and insect populations over time. The loss of biodiversity in forest monocultures is associated with lower forest resistance to pathogens, attack by insects, and adverse environmental conditions. Monoculture plantations have been shown to have substantial social impacts on local communities. Forest monocultures have motivated migrations across Latin America due to localized water cycle interference, declining soil health, and changes in resource availability. While industrial agriculture can increase employment opportunities, studies show forest plantations often have limited employment opportunities, with most workers coming from outside of

1638-743: The tropics has led to hindrance of local small-scale farms and indigenous land rights in the forms of reduced food sovereignty , food security , land and water access, and hunting. Land privatization and pressure for monocultural expansion by larger companies takes different forms: silent evictions, violence, and reverse leasing arrangements. Introduction to global trade makes small-scale farmers vulnerable to international demand, prices, and variations in climate affecting crop production. Farmers who make contracts or take out loans with large corporations can face debt and loss of land if they fail to meet certain crop yields or profit. Monocultures are an aspect of agro-extractivism on account of high percentages of

1680-494: The use of most military specifications and standards without a waiver. This has become known as the "Perry Memorandum". Many military specifications and standards were canceled. In their place, the DOD directed the use of performance specifications and non-government standards. "Performance specifications" describe the desired performance of the weapon, rather than describing how those goals would be reached (that is, directing which technology or which materials would be used). In 2005

1722-709: The use of synthesized fertilizers have reduced the amount of additional land needed to produce food, called land sparing . monoculture, monocropping (rotation of monocultures) intermingled in a field (intercropping) polyculture Note that the distinction between monoculture and polyculture is not the same as between monocropping and intercropping. The first two describe diversity in space , as does intercropping. Monocropping and crop rotation describe diversity over time . Monocultures of perennials, such as African palm oil , sugarcane, tea and pines, can change soil chemistry leading to soil acidification , degradation , and soil-borne diseases , ultimately having

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1764-547: The world, forest monocultures are planted as an efficient way to produce and harvest timber. Because timber harvest from monoculture forests is often an export-driven industry, these plantations can be a form of extractivism . Following deforestation , monoculture afforestation has become increasingly popular due to the necessity for ecosystem services , such as mitigating the effects of climate change via carbon sequestration and gas regulation. Eucalyptus, pines, and acacias are examples of popular monocultures being utilized in

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