Desenvolvimento foliar em duas cultivares de oliveira estimado por duas categorias de modelos

Martins, Fabrina Bolzan; Pereira, Rodolfo Armando de Almeida; Pinheiro, Marcos Vinícius Marques; Abreu, Marcel Carvalho

doi:10.1590/0102-778620140020

Cited by 17 publications

(29 citation statements)

References 24 publications

(54 reference statements)

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“…High air temperatures (above the optimal temperature, e.g. 14.7 and 16.1 ºC) (Martins et al, 2014) also reduce the photosynthetic rate, mainly due to the reduction in the efficiency of the photosystem II (photosynthetic apparatus), increase in maintenance respiration and reduction of leaf area. In addition, alterations in the olive development stages will impact the management of the crop, accelerating flowering, maturation and harvest, and probable occurrence of adverse meteorological events during these stages.…”

Section: Resultsmentioning

confidence: 99%

“…To make viable the expansion of olive cultivation in Brazil, it is necessary first to know the areas that are promising and adapted to this crop, especially in regions with climatic conditions different from those of its center of origin (Martins et al, 2014). Unfavorable climatic conditions can cause physiological disorders in the plants and thus affect their development, growth and yield (Tanasijevic et al, 2014), and water stress and irregular temperature are the main limiting factors to olive cultivation (Moriondo et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

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Impacts of climate projections on water balance and implications on olive crop in Minas Gerais

Santos

Martins

Torres

2017

Rev. bras. eng. agríc. ambient.

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Minas Gerais is vulnerable to climate change, with negative impacts on water balance and changes in the cultivation of several crops. Currently, the olive crop has been an alternative source for farmers, especially those in the South of the state. However, there is no information on areas with climatic conditions suitable for olive cultivation, as well as the possible impacts of climate change. The aim of this study was to verify the impact of climate projections on water balance and agroclimatic zoning for olive cultivation in the Minas Gerais, based on current climate conditions (1980-2011), and different climate change projections for three future periods (2011-2040, 2041-2070 and 2071-2100). For the current climate, Minas Gerais showed 37% of suitable area, 15% of marginal area and 48% of unsuitable area for olive cultivation. For the period 2071-2100, only 4% was classified as suitable area, 6% as marginal area and 90% as unsuitable. Projections of climate change, of both temperature and rainfall, will affect the olive cultivation, substantially reducing the suitable area in the entire state.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Impacts of climate projections on water balance and implications on olive crop in Minas Gerais

Santos

Martins

Torres

2017

Rev. bras. eng. agríc. ambient.

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“…For eucalyptus trees, the RMSE ranged from 7.1 to 10.0 leaves for linear and from 2.7 to 3.7 leaves for the WE (MARTINS & STRECK, 2007). For two olive trees cultivars, the WE presented an error of 3.41 leaves while the linear showed an error of 7.5 leaves (MARTINS et al, 2014).…”

Section: Resultsmentioning

confidence: 94%

Observed and estimated leaf appearance of landrace and improved maize cultivars

et al. 2017

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The objective of this study was to compare the simulations of leaf appearance of landrace and improved maize cultivars using the CSM-CERES-Maize (linear) and the Wang and Engel models (nonlinear). The coefficients of the models were calibrated using a data set of total leaf number collected in the 11/04/2013 sowing date for the landrace varieties ‘Cinquentinha’ and ‘Bico de Ouro’ and the simple hybrid ‘AS 1573PRO’. For the ‘BRS Planalto’ variety, model coefficients were estimated with data from 12/13/2014 sowing date. Evaluation of the models was with independent data sets collected during the growing seasons of 2013/2014 (Experiment 1) and 2014/2015 (Experiment 2) in Santa Maria, RS, Brazil. Total number of leaves for both landrace and improved maize varieties was better estimated with the Wang and Engel model, with a root mean square error of 1.0 leaf, while estimations with the CSM-CERES-Maize model had a root mean square error of 1.5 leaf.

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“…Quanto menor o valor de BIAS menos tendencioso e melhor é o método de NHF (LEITE; ANDRADE, 2002). E r determina o grau de associação entre duas ou mais variáveis, sendo que quanto mais próximo de 1 (positivo ou negativo), maior a relação entre valores observados e estimados e melhor é o método de estimativa de NHF (MARTINS et al, 2014):…”

Section: Nhfpa=unclassified

Avaliação De Métodos De Estimativa De Número De Horas Frio Para O Sul E Sudoeste Do Paraná

Santos¹,

Leite²,

Martins³

2017

ABClima

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RESUMO:As frutíferas de clima temperado necessitam acumular horas de frio para sair da dormência e iniciar a floração. Essas frutíferas são importantes para o Paraná; que é o quarto estado com maior produção. Por isso, o objetivo desse trabalho é avaliar o desempenho de quatro métodos de estimativa de número de horas de frio (NHF) para as cidades Fernandes Pinheiro, Francisco Beltrão, Guarapuava, Palmas, Pato Branco e Planalto; localizadas na região sul e sudoeste do Paraná relativo ao período de 1980 a 2014. Para selecionar o melhor método de NHF foi realizada a análise de variância, seguida de comparação de médias, pelo teste Tukey (α=0,05), além da correlação (r), raiz do quadrado médio do erro (RQME) e BIAS. Para todas as cidades, o método de Pola e Angelocci foi o mais eficiente em estimar o número de horas de frio para a região estudada, com menores valores de RQME, entre 26,4 a 46,4 horas. O método de Carbone e Schwartz foi o que apresentou os piores resultados em todas as cidades. Palavras-chaves: necessidade de frio, frutíferas de clima temperado, frio de inverno. CHILLING HOURS PERFORMANCE METHODS FOR THE SOUTH AND SOUTHWEST OF PARANÁ STATEABSTRACT: Many temperate fruit require cold temperatures during the dormancy season to initiate flowering and bear fruit. These fruits are important to the Paraná state; which is the fourth most important in the production of this crop. The aim of this study is to evaluate the performance of four chilling hours methods for Fernandes Pinheiro, Francisco Beltrão, Guarapuava, Palmas, Pato Branco and Planalto; located at south and southwest of Paraná, for the period 1980 to 2014. To verify the performance of four methods, the accumulated chilling hours were submitted to analysis of variance followed by Tukey test (α=0.05), Pearson correlation (r), root mean square error (RMSE) and BIAS. The Pola and Angelocci method estimations performed better, with lower RMSE values, 26.4 to 46.4 hours. The Carbone and Schwartz method was the worst chilling hours estimated.

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Desenvolvimento foliar em duas cultivares de oliveira estimado por duas categorias de modelos

Cited by 17 publications

References 24 publications

Impacts of climate projections on water balance and implications on olive crop in Minas Gerais

Impacts of climate projections on water balance and implications on olive crop in Minas Gerais

Observed and estimated leaf appearance of landrace and improved maize cultivars

Avaliação De Métodos De Estimativa De Número De Horas Frio Para O Sul E Sudoeste Do Paraná

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