Rice Fields
Mostrando 37-48 de 55 artigos, teses e dissertações.
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37. Proteção jurídica das áreas úmidas e os direitos socioambientais / Wetlands protection and the socioenvironemental rights
Wetlands are transitional ecosystems, located between the land and the aquatic environments, sharing characteristics of both areas. Can be found in bays, estuaries, deltas, coral reefs, salt marshes, mangroves, coastal plains, bogs, dunes, swamps, riparian forests, leas, rice fields, etc. The modern capitalist societies have been over exploring these wet eco
Publicado em: 2007
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38. Efeito das características do habitat e da matriz nas assembléias de aves aquáticas em áreas úmidas do Sul do Brasil
O Parque Nacional da Lagoa do Peixe (PNLP), na zona costeira do Rio Grande do Sul, protege amostras importantes de quase todos os ecossistemas de áreas úmidas e espécies de aves aquáticas da região. Os movimentos migratórios e os deslocamentos entre áreas úmidas determinam importantes variações temporais de composição e abundância das assembléi
Publicado em: 2007
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39. INTERACTION OF RICE-FISH CULTURE WITH PESTICIDES AND EFFECT ON ZOOPLANKTON COMMUNITY / INTERAÇÃO DA RIZIPISCICULTURA COM AGROQUÍMICOS E EFEITOS SOBRE A COMUNIDADE ZOOPLANCTÔNICA
The objective of this experiment was to determine the lethal concentration (LC50;96h) of azimsulfuron (A) and metsulfuron-methyl (M) herbicides and carbofuran (C) insecticide for common (Cyprinus carpio), grass (Ctenopharyngodon idella )and big head (Aristichthys nobilis) carps fingerlings, and the effect of these pesticides on the cholinergics response in f
Publicado em: 2006
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40. INITROGEN FIXATION BY DIAZOTROPHIC BACTERIA IN FLOODED RICE CULTIVARS / FIXAÇÃO DE NITROGÊNIO POR BACTÉRIAS DIAZOTRÓFICAS EM CULTIVARES DE ARROZ IRRIGADO
Rice is a very important culture in the South of Brazil, with productivity mean of 6 t ha-1, requiring large amounts of nitrogen. The biological nitrogen fixation (BNF) has already been established for legumes and in gramineous plants, microrganisms of the genus Azospirillum, Herbaspirillum, Gluconacetobacter and Burkholderia have potential to BNF and growth
Publicado em: 2006
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41. Utilização do conceito de fugacidade na previsão do comportamento ambiental do carbosulfan e do carbofuran na cultura do arroz irrigado
Pesticide use to control pests, diseases and weeds is steadily increasing due to a general food demand increase, cropping area limitation, and manpower availability. Pesticide application without a sound knowledge may hazard environment and human health. Regulatory agencies enforces that, before a new product releasing to the market for agricultural use, int
Publicado em: 2005
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42. The role of urea in the oviposition behaviour of Japanese encephalitis vectors in rice fields of South India
The effect of urea on the oviposition behaviour of culicine vectors of Japanese encephalitis was studied in rice fields. Gravid females had a strong preference for oviposition in urea treated areas in rice fields, while no such preference was exhibited in untreated areas. The egg laying declined in the area where urea treated water surface had a mechanical b
Mem. Inst. Oswaldo Cruz. Publicado em: 2003-09
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43. The distribution of Biomphalaria spp. in different habitats in relation to physical, biological, water contact and cognitive factors in a rural area in Minas Gerais, Brazil
A total of 256 sites in 11 habitats were surveyed for Biomphalaria in Melquiades rural area (State of Minas Gerais) in August and November 1999 and in March 2000. Of the 1,780 Biomphalaria collected, 1,721 (96.7%) were B. glabrata and 59 (3.3%) B. straminea. Snails were found in all habitats except in wells, with the largest mean numbers in tanks, seepage po
Memórias do Instituto Oswaldo Cruz. Publicado em: 2001-09
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44. Isolation of the Siderophore Schizokinen from Soil of Rice Fields
Schizokinen, a siderophore previously isolated from low-iron cultures of Bacillus megaterium and Anabaena sp., was isolated from the soil of rice fields after the annual flooding period.
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45. Optimizing grain yields reduces CH4 emissions from rice paddy fields
Microbial production in anoxic wetland rice soils is a major source of atmospheric CH4, the most important non-CO2 greenhouse gas. Much higher CH4 emissions from well managed irrigated rice fields in the wet than in the dry season could not be explained by seasonal differences in temperature. We hypothesized that high CH4 emissions in the wet season are caus
National Academy of Sciences.
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46. A possible alternative method for collecting mosquito larvae in rice fields
BioMed Central.
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47. Epiphytic Cyanobacteria on Chara vulgaris Are the Main Contributors to N2 Fixation in Rice Fields
The distribution of nitrogenase activity in the rice-soil system and the possible contribution of epiphytic cyanobacteria on rice plants and other macrophytes to this activity were studied in two locations in the rice fields of Valencia, Spain, in two consecutive crop seasons. The largest proportion of photodependent N2 fixation was associated with the macro
American Society for Microbiology.
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48. Chemotaxonomy of Gibberella zeae with special reference to production of trichothecenes and zearalenone.
By adopting a single-spore isolation technique, 113 isolates of Gibberella zeae, the perfect stage of Fusarium graminearum, were isolated from rice stubbles in barley and wheat fields and tested for production of trichothecenes and zearalenone on rice grains. Of the isolates, 93% produced the trichothecenes, and they could be subdivided into two chemotaxonom