Phosphate Fertilizer
Mostrando 13-24 de 72 artigos, teses e dissertações.
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13. Soil Properties and Plant Biomass Production in Natural Rangeland Management Systems
ABSTRACT Improper management of rangelands can cause land degradation and reduce the economic efficiency of livestock activity. The aim of this study was to evaluate soil properties and quantify plant biomass production in four natural rangeland management systems in the Santa Catarina Plateau (Planalto Catarinense) of Brazil. The treatments, which included
Rev. Bras. Ciênc. Solo. Publicado em: 24/10/2016
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14. Broadcast distribution uniformity of fertilizer with centrifugal spreaders used in variable rate application
ABSTRACT The quality of fertilizer distribution process is important to the success of agriculture. This research aimed to study the distribution uniformity of fertilizers with spreaders capable of performing variable rate. Evaluations were carried out in different farms, in the Southwest region of the State of Goiás, Brazil. 13 longitudinal and transversal
Eng. Agríc.. Publicado em: 2016-10
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15. SUSTENTABILIDADE NO USO DO FÓSFORO: UMA QUESTÃO DE SEGURANÇA HÍDRICA E ALIMENTAR
The phosphorus used as fertilizer in agriculture is extracted from phosphate rocks, which after extraction reacts with sulfuric acid, releasing phosphoric acid, a raw material for the fertilizer industry. Studies point to a possible depletion of world reserves of phosphate rock in the next 50-100 years. A phosphorus scarcity is closely linked to global food
Quím. Nova. Publicado em: 2016-07
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16. Characterization of Single Superphosphate Powders – a study of Milling Effects on Solubilization Kinetics
Conventional single superphosphate (SSP) is known as one of the most important and common sources of phosphorus in agriculture. Despite SSP has been widely produced as a fertilizer, a few studies have been done to describe the fundamental aspects of this P-fertilizer, i.e., phase composition, thermal degradation behavior, and solubility kinetics. Therefore,
Mat. Res.. Publicado em: 12/02/2016
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17. Dissolving mechanism of strain P17 on insoluble phosphorus of yellow-brown soil
Strain P17 was a bacterial strain identified as Bacillus megaterium isolated from ground accumulating phosphate rock powder. The fermentation broth of strain P17 and the yellow-brown soil from Nanjing Agricultural University garden were collected to conduct this study. The simulation of fixed insoluble phosphorous forms after applying calcium superphosphate
Braz. J. Microbiol.. Publicado em: 2014-09
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18. Soil phosphorus dynamics as affected by Congo grass and P fertilizer
Some plant species can change soil phosphorus (P) availability and this may be an important tool in managing tropical high fixing phosphorus soils. An experiment was conducted to evaluate phosphorus transformations in the soil and phosphatase activity during periods of Congo grass (Brachiaria ruziziensis, Germain et Evrard) growth in two tropical soils recei
Sci. agric. (Piracicaba, Braz.). Publicado em: 2014-08
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19. Resposta da cultura do milho aos fertilizantes fosfatados e nitrogenados revestidos com polímeros / Response of maize to polymer-covered phosphate and nitrogen fertilizers
The effective use of fertilizers, besides resulting in greater yield, can reduce production costs, with positive results in the end of the cropping season. Soil correction and fertilization in intensive maize production systems represent, on average, 40% to 45% of the production cost. Phosphorus is considered as a nutrient with low absorption by plants due t
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/01/2012
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20. Fosfato monoamônio revestido com polímeros no plantio das culturas de milho irrigado e cana-de-açúcar
Phosphorus (P) is the most limiting nutrient, in tropical conditions, for crop yield, mostly due to its low contents and high fixation in soils. Moreover, it is common to observe low efficacy of phosphate fertilizers, with plant absorption varying from 20% to 30%. Therefore, the reduction of phosphate fertilizers expenses and, or, increasing its efficacy, co
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/01/2012
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21. Performance of maize landrace under no-till as affected by the organic and mineral fertilizers
The aim of this work was to study the effects of organic and mineral fertilizers at sowing (without fertilizers, organic poultry litter fertilizer on the surface and mineral NK + reactive natural phosphate from Arad and NK + triple superphosphate in the furrow) and topdressing (without fertilizers, organic poultry litter fertilization and urea) on chemical a
Brazilian Archives of Biology and Technology. Publicado em: 2012-04
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22. DINÂMICA DO FÓSFORO NA INTEGRAÇÃO LAVOURA-PECUÁRIA SOB SISTEMA PLANTIO DIRETO / Phosphurus dynamic in crop livestock integration under notillage.
The necessity to preserve the soil, coupled with the constant search for lower production costs and increased productivity resulted in the use no-tillage (NT). Efficient technique in the preservation and use of highly weathered soils (tropical and subtropical soils). However, only the continuous cultivation of monocultures has been implicated in reduced prof
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/11/2011
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23. Eficiência agronômica de fosfatados reativos sob diferentes formas de manejo da adubação / Agronomic efficiency of fertilizer under different reactive forms of fertilizer management
Com o objetivo de avaliar a eficiência relativa de fertilizantes fosfatados reativos sob diferentes manejos da adubação, em três cultivos sucessivos da soja, conduziu-se um experimento na Escola de Agronomia e Engenharia de Alimentos da Universidade Federal de Goiás, em um Latossolo Vermelho Distroférrico com teores baixos de fósforos. Empregou-se um
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/08/2011
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24. Eficiência agronômica de fosfatados reativos sob diferentes formas de manejo da adubação / Agronomic efficiency of fertilizer under different reactive forms of fertilizer management
Com o objetivo de avaliar a eficiência relativa de fertilizantes fosfatados reativos sob diferentes manejos da adubação, em três cultivos sucessivos da soja, conduziu-se um experimento na Escola de Agronomia e Engenharia de Alimentos da Universidade Federal de Goiás, em um Latossolo Vermelho Distroférrico com teores baixos de fósforos. Empregou-se um
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/08/2011