Buscar
Mostrando ítems 1-10 de 2284
Aluminum toxicity reduces the nutritional efficiency of macronutrients and micronutrients in sugarcane seedlingsToxidez de alumínio reduz eficiência nutricional de macronutrientes e micronutrientes em mudas de cana-de-açúcar
(2020-01-01)
Although the effects of aluminum on the content and accumulation of mineral nutrients in crops have been studied, but nothing is known about its effect on the nutritional efficiency of sugarcane. Therefore, this study aimed ...
A model of capital accumulation and rent-seeking
(Escola de Pós-Graduação em Economia da FGV, 2002-06-01)
A simple model incorporating rent-seeking into the standard neoclassical model of capital accumulation is presented. It embodies the idea that the performance of an economy depends on the efficiency of its institutions. ...
Accumulated productivity and its genetic association with reproductive traits in females Brahman
(Univ Cordoba, 2013-10-01)
Objective. Assessment of genetic parameters for accumulative productivity trait (ACP) and genetic correlations with age at first calving (AFC), between calving interval of first and second parity (BCI1) and longevity (LONG). ...
MORPHOGENESIS, STRUCTURAL CHARACTERISTICS AND FORAGE ACCUMULATION OF Megathyrsus maximus BRS ZURI SUBJECTED TO NITROGEN FERTILIZATION
(Inst Zootecnia, 2020-01-01)
Nitrogen fertilization permits to increase the carrying capacity of pastures; however, the use of high doses can have negative effects on the growth of forage grasses. Therefore, the aim of this study was to evaluate the ...
A evolução da produtividade total de fatores na economia brasileira: uma análise do período pós-real
(2003)
This research applies a stochastic frontier production model to Brazilian manufacturing, construction, commerce and service industries, in order to identify the sources of growth of main economic activities in Brazil: ...
Nitrogen fertilizer effect in production, nutrient accumulation and nitrogen efficiency use of second ratoon sugarcane harvested without straw burning
(2017-05-01)
Sugarcane harvest after straw burning implies rapid mineralization of biomass and greenhouse gas emissions. In this context, maintenance of sugarcane straw on the soil is as a new strategy to circumvent the harmful ...
Agronomic biofortification and productivity of wheat with soil zinc and diazotrophic bacteria in tropical savannah
(2022-01-01)
Agronomic biofortification of staple food with zinc (Zn) in combination with diazotrophic bacteria is one sustainable and feasible strategy to improve plant nutrition, nutrient use efficiency and production and combat Zn ...
Use efficiency and responsivity to nitrogen of common bean cultivarsEficiência de uso e responsividade ao nitrogênio de cultivares de feijoeiro comum
(2019-01-01)
Common beans are the main source of protein in underdeveloped countries, and nitrogen (N) is one of the nutrients the most limits the productivity of this crop. This study, under field conditions, aimed to: A) determinate ...
Productivity of nations: a stochastic frontier approach to TFP decomposition
(2004-12-31)
This Paper Tackles the Problem of Aggregate Tfp Measurement Using Stochastic Frontier Analysis (Sfa). Data From Penn World Table 6.1 are Used to Estimate a World Production Frontier For a Sample of 75 Countries Over a Long ...