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McKean, Erin, ed. (2003), The Oxford Essential Dictionary of new Words, Berkeley, p. Dickson, Paul (2006), Slang; The topical dictionary of Americanisms, Walker & Company, p. Breitenstein, Jeff; Paiva, Troy (2004), Ultimate Hot Rod Dictionary, MotorBooks/MBI Publishing Company, p. Green, Jonathon (2005), Cassell's Dictionary of Slang (2nd ed.), Sterling Publishing Company, p. Dalzell, Tom; Victor, Terry (2007), The concise new Partridge dictionary of slang and unconventional English, Routledge, p. Dalzell, Tom; Victor, Terry (2007), The concise new Partridge dictionary of slang and unconventional English, Routledge, p. Oxford English Dictionary (Online ed.). By the 1970s, rice burner was a US English slang time period for the Vietnamese individuals throughout and after the Vietnam War. Comparably, Alaskan slang for a sled dog is "fish burner," as in a beast of burden that runs on fish. Comparably, Alaskan slang for a sled dog is "fish burner," as in a beast of burden that runs on fish.

This lack of phosphorus will restrict production even if calcium is added to the soil to overcome the acidity, or if acid-tolerant cultivars are planted. This is done by manipulating soil chemistry and utilizing deep-rooted, acid-tolerant rice cultivars to assist seize the leached parts. Adding lime to the subsoil shouldn't be sensible, however in 1994, IRRI and Indonesian scientists started experiments to see if components of lime utilized to the soil floor may very well be leached down into the subsoil. Scientists are at the moment learning the processes that govern the speed of leaching of lime components and their accumulation within the subsoil. The targets are to understand the diversity of farmers' practices and resolution-making processes and to grade the elements that restrict rice crop yields. Along with the usual upland issues, those involved in growing upland rice find themselves going through an urgent have to conserve soil and the range of plant species and to deal with increasingly frequent and extreme weed and illness infestations. The uplands have all the time suffered from drought, infertile soils, weeds, and plant diseases.

This class consists of each specially bred varieties which might be drought-tolerant and conventional rice varieties that have adapted to drier atmosphere. Armed with this data, they're working with IRRI's upland rice breeder to mix such genes with different desirable traits for incorporation into new upland varieties. Scientists from the International Rice Research Institute (IRRI) have been working with colleagues in the Upland Rice Research Consortium to better understand pathogen populations and determine resistance genes present in some cultivars. Although many traditional upland cultivars show stable resistance to this illness beneath low-input cropping practices, they produce other traits that make them tough to make use of in intensified systems. Using the strategies of biotechnology, they're growing cultivars with extra durable disease resistance. Rice plant cultivars differ in their ability to compete with weeds in the field. Journal of plant nutrition and soil science. Journal of Agriculture Science. The soils there have been severely eroded and degraded because of the slash-and-burn agriculture that followed logging for a few years.

These new upward pressures end in a motion towards permanent agriculture and an intensification of land use in upland areas. The acidity present in the subsoil of many upland areas prevents plant roots from reaching the moisture and nutrients therein, thus lowering crop yield. Leguminous plants in hedgerows make substantial amounts of atmospheric nitrogen obtainable to both rice plants and annual crops and recycle other nutrients and natural matter. Allelopathic plants can have an effect on the expansion of nearby plants through the production of biological compounds they launch into the setting. Weeds are the most severe biological constraint to upland rice production. Many upland farmers plant native rice that does not respond effectively to improved administration practices, like intensive farming utilizing artificial fertilizers, but these native rice varieties are properly tailored to their environments and produce grains that meet local wants. Scientists at nationwide agricultural analysis systems have crossed these improved strains with native cultivars, introducing hybrid types of rice. IRRI scientists are also learning how fertilizer and cultural practices influence weed communities. The purposeful application of the agents of such diseases to weed pests among rice crops may represent another method to weed management. Consortium scientists are also attempting to know how upland rice farmers' cropping systems contribute to soil erosion, with the goal of proposing possible erosion management strategies.

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