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A balança comercial do agronegócio brasileiro de 1989 a 2005 AgEcon
Barros, Geraldo Sant'Ana de Camargo; Silva, Simone Fioritti.
This study aims to analyze the agribusiness contribution to Brazil’s trade balance. A new classification of the agribusiness trade balance was proposed and used to analyze the aspects of the exported products –agricultural products, products of animal origin, industrialized foods and imported inputs – represented by fertilizers. Imports and exports vector autoregression models were used to explain the behavior of these variables. An increase of 1% in the attractiveness – product of the exchange rate by the international prices – boosts immediately the exports of non processed agricultural products by 1.71%, stabilizing at 2% after some trimesters. The attractiveness explains 60 to 74% of the forecast error variances of these exportats. It is noted that an...
Tipo: Journal Article Palavras-chave: Agribusiness trade balance; Agricultural products; Animal products; Food industry; Fertilizers; Economic growth; Attractiveness; Exports; Imports; Productivity.; Political Economy; Q17; Q18..
Ano: 2008 URL: http://purl.umn.edu/61191
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Ambience and productive performance of arugula cultivated in different spacing Sci. Agrar.Paran. / SAP
Gonçalves-Trevisoli, Edilaine Della Valentina; Mendonça, Heloísa Ferro Constâncio; Dildey, Omari Dangelo Forlin; Dartora, Janaína; Rissato, Bruna Broti; Coltro-Roncato, Sidiane; Klosowski, Élcio Silvério; Tsutsumi, Cláudio Yuji; Echer, Marcia de Morais.
The objective of this work was to evaluate the effect of environment on the productive performance of arugula in different row spacings and plant spacing. The experiment was conducted in the spring, summer 2011 and in the autumn and winter 2012. The experiment design was a randomized complete block design with four replications in a 3x2 factorial design. The first factor consisted to the row spacings (0.20; 0.25 and 0.30 m) and the second to the plant spacings (0.05 and 0.10 m). The plant height and diameter, leaf number, leaf area and total leaf fresh matter and productivity were evaluated. The data were subjected to variance analysis and the average were compared by Tukey test (p<0.05). In the spring and in the plant spacing of 0.05m were verified...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cultivation period; Eruca sativa; Productivity..
Ano: 2017 URL: http://e-revista.unioeste.br/index.php/scientiaagraria/article/view/14040
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Fermentation characteristics and nutritive values of sorghum silages Animal Sciences
Veriato, Florence Taciana; Pires, Daniel Ananias De Assis; Tolentino, Daniela Cangussú; Alves, Dorismar David; Jayme, Diogo Conzaga; Moura, Marielly Maria Almeida.
The objective of this study was to select sorghum genotypes for silage production. The study was carried out at Embrapa Maize & Sorghum’s experimental field. Planting was performed in randomized blocks, with three replicates and the Scott-Knott test at a 5% probability level. The material was ensilaged in laboratory silos opened after 56 days for analysis concerning fermentation and bromatological composition. Only crude protein showed no significant difference (p > 0.05), with an overall mean of 8.88%. The other variables presented significant differences (p < 0.05): pH (3.34 to 3.94); Aw (0.93 to 0.98); N-NH 3/TN (1.61 to 6.56%); green matter yield (12.05 to 34.14 t ha-1); dry matter yield (6.19 to 11.42 t ha-1); dry matter (26.89 to 49.95%);...
Tipo: Info:eu-repo/semantics/article Palavras-chave: ZOOTECNIA:FORRAGICULTURA digestibility; Genotypes; Productivity..
Ano: 2018 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/34458
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Influence of pollination on canola seed production in the Cerrado of Uberlândia, Minas Gerais State, Brazil Agronomy
Fuzaro, Leandro; Xavier, Nayara Luchini; Carvalho, Fábio Janoni; Nery, Flávia Andrea Nery; Carvalho, Stephan Malfitano; Andaló, Vanessa.
The objective of this study was to evaluate the influence of pollinating insects on canola productivity for different commercial hybrids, Hyola 61 and Hyola 433, in Minas Gerais State, Brazil. The studies were conducted at the Fazenda Experimental Água Limpa of the Federal University of Uberlândia. To evaluate the influence of pollination by bees on the production of canola seeds, an experiment was carried out to exclude floral visitors and compare canola seed production following four treatments: (a) autogamy in Hyola 61, (b) autogamy in Hyola 433, (c) open pollination in Hyola 61, with insects having free access, and (d) open pollination in Hyola 433, with insects having free access. Flowers that were available for pollination had 25% and 18.8% heavier...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Apis mellifera; Brassica napus; Tropicalization; Productivity.; Entomologia Agricola.
Ano: 2018 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/39315
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Periods of weed interference in chickpea grown under different doses of nitrogen fertilizer topdressing Agronomy
Amaral, Carita Liberato; Pavan, Guilherme Bacarin; Pereira, Fernanda Campos Mastrotti; Alves, Pedro Luis da Costa Aguiar.
Weed interference can reduce chickpea growth and, therefore, productivity depending on the period of coexistence and the nutritional status of the crop, among other factors. A study was performed over two crop years to estimate the critical period of weed interference (CPWI) during chickpea production under three doses of nitrogen (N) fertilizer topdressing (0, 50, and 75 kg N ha-1). The experiments were conducted at 0, 7, 14, 21, 28, 35, 42, 56, 63, and 140 days after emergence (DAE) of chickpea/weed coexistence under two conditions: initially weed-free and initially weed-infested. The presence of weeds negatively affected chickpea production and reduced yields by 70% on average regardless of N rate, rendering the crop economically unfeasible. The CPWI...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cicer arietinum L.; Coexistence periods; Critical period of interference; Productivity.; Matologia.
Ano: 2018 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/35666
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Productivity, Geography, and the Export Decision of Chilean Farms AgEcon
Echeverria, Rodrigo; Gopinath, Munisamy.
This article analyzes the export participation of Chilean farms and the relative importance of farm-specific and geographic characteristics in this decision. An export behavior model is estimated using data on 8,284 Chilean farms and a two-stage conditional maximum likelihood procedure. Farm efficiency has a relatively stronger effect than the combined effect of geographic characteristics in increasing the probability of export participation. Farms with skilled (managerial) labor and in regions with higher human capital also have a relatively higher probability of producing for the export market. However, for geographic characteristics to positively affect export participation, farms must achieve a minimum level of efficiency.
Tipo: Conference Paper or Presentation Palavras-chave: Agricultural Trade; Chile; Export Participation; Geography; Productivity.; Farm Management; International Relations/Trade; F11; O13; O18.
Ano: 2006 URL: http://purl.umn.edu/25687
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The Production and Price Impact of Biotech Crops AgEcon
Brookes, Graham; Yu, Tun-Hsiang (Edward); Tokgoz, Simla; Elobeid, Amani E..
Biotech crops have now been grown commercially on a substantial global scale since 1996. This paper examines the production effects of the technology and impacts on cereal and oilseed markets through the use of agricultural commodity models. It analyses the impacts on global production, consumption, trade and prices in the soybean, canola and corn sectors. The analysis suggests that world prices of corn, soybeans and canola would probably be, respectively, 5.8%, 9.6% and 3.8% higher, on average, than 2007 baseline levels if this technology was no longer available to farmers. Prices of key derivatives of soybeans (meal and oil) would also be between 5% and 9% higher, with rapeseed meal and oil prices being about 4% higher than baseline levels. World prices...
Tipo: Working or Discussion Paper Palavras-chave: Biotechnology; Cereals; Crop yields; Oilseeds; Price effects; Productivity.; Crop Production/Industries; Demand and Price Analysis; Productivity Analysis.
Ano: 2010 URL: http://purl.umn.edu/56984
Registros recuperados: 7
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