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Rodrigo Yoiti Tsukahara

Rodrigo Yoiti Tsukahara
ABC Foundation · Agrometeorology

Dr.

About

27
Publications
3,309
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71
Citations
Additional affiliations
January 2003 - December 2015
ABC Foundation
Position
  • Researcher

Publications

Publications (27)
Article
The values of the physical-water attributes of soils for use in agricultural simulation models are usually obtained using difficult and time-consuming methods. The objective of this study was to analyze the performance of the AquaCrop model to estimate soybean and maize crop productivity in the region of Campos Gerais (Brazil), with the option of i...
Article
Full-text available
The computational models that simulate yield of agricultural crops are important to planning activities. The objective of this study was to verify the performance of AquaCrop model to simulate soybean and maize yield in Campos Gerais region, in different soil types. The AquaCrop was used to estimate yield, requiring climate, soil, crop and soil man...
Article
Full-text available
Crop productivity evaluation with models simulations can help in the prediction of harvests and in the understanding of the interactions resulting from the soil-plant-atmosphere continuum. The aim of this study was to calibrate and validate the AquaCrop model for maize crop in the edaphoclimatic conditions of Campos Gerais region, Paraná State, Bra...
Article
Full-text available
The objective of this work was to calibrate and validate the AquaCrop model for the wheat (Triticum aestivum) crop in the Campos Gerais region, in Southern Brazil. Five cultivars were evaluated in the harvests from 2007 to 2017. The input data for AquaCrop - related to climate, crop, soil, and soil management -, collected in the field, were obtaine...
Article
Full-text available
RESUMO - O manejo adequado da adubação nitrogenada para atenuar efeitos da perda de área foliar é uma soluçãopouco explorada. Portanto, objetivou-se avaliar, em campo, o efeito da reaplicação de nitrogênio e intensidade dedesfolha em diferentes fases fenológicas sobre a incidência de grãos ardidos e o desempenho produtivo do milho. Odelineamento ex...
Conference Paper
RESUMO: O trigo é um dos cereais mais importantes para a alimentação humana e a região dos Campos Gerais do Paraná apresenta áreas significativas de cultivo deste cereal. Como qualquer outro vegetal, a produção do trigo está intimamente relacionada com as condições climáticas, dentre elas, a disponibilidade hídrica no solo. Neste sentido, o objetiv...
Article
Full-text available
RESUMO O fungo Sclerotinia sclerotiorum incide sobre a cultura da soja causando danos em sua produtividade. Entretanto, a quantificação de tais danos ainda demanda estudos, devido à interação com o ambiente em que o desenvolvimento da doença se insere. Assim, o presente estudo tem como objetivo quantificar em estudos observacionais, através de meta...
Article
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Este artigo representa a síntese das atividades da Fundação ABC no domínio da agrometeo­rologia, desde o mecanismo adotado para formulação e comprovação das hipóteses, até a forma de divulgação das informações. O nível organizacional entre a pesquisa, cooperativas e a extensão rural deve ser considerado. A escolha das informações agrometeorológicas...
Article
Full-text available
The objective of this work was to evaluate the effect of harvest delay on grain moisture, thousand grain weight, and soybean productivity, as well as to identify the most important meteorological variables during pre-harvest and to propose empirical algorithms to estimate soybean yield losses. The experiments were carried out in the municipalities...
Conference Paper
Full-text available
This paper describes a practical, integrated, web-based and user friendly analysis tool for crop model users that provides quality control of input data, tracks user selections in model parameterization, and enables visual analysis of model outcomes using a single graphical user interface. This allows the user to undertake numerous steps in crop mo...
Article
Full-text available
Wheat blast caused by Magnaporthe oryzae was first reported in 1985, in the state of Paraná. The disease rapidly spread into other sub-tropical wheat- growing regions of South America, becoming a primary concern in those regions. Warm temperatures and prolonged wetness during wheat growth and development stages favors disease development. The patho...
Article
Full-text available
This study aimed to evaluate the performance of the models CLIGEN, LARS-WG and PGECLIMA_R in the simulation of daily series of maximum air temperature for localities in the state of Parana, Brazil. It was used time series of maximum air temperature in the localities of Campo Mourão, Castro, Curitiba, Ivaí, Londrina, Maringa and Paranaguá. The valid...
Article
Full-text available
The objective of this study was to evaluate the performance of simplified and agrometeorological models in the soybean crop productivity estimate, looking for crop season prediction and planning, in the Ponta Grossa region, Paraná State, Brazil. The soil of the studied region is classified as Typic Hapludox and the climate as Cfb. The soybean crop...
Article
There is a growing concern that climate changes will lead to significant impact to agriculture, thus having a global effect in food production. The application of crop models to study the potential impact of climate change and climate variability provides a direct link between models, science and the concerns of the society. The objective of this w...
Article
Full-text available
The objective of the work was to study the influence of the climate on the progress of the soybean rust (Phakopsora pachyrhizi) under field conditions. Two assays were carried out during the 2005/2006 season in Castro and Arapoti regions, Paraná. The epidemic was divided in three periods: sowing until first symptoms of disease; beginning of the dis...
Article
Full-text available
The objective of the work was to study the influence of the climate on the progress of the soybean rust (Phakopsora pachyrhizi) under field conditions. Two assays were carried out during the 2005/2006 season in Castro and Arapoti regions, Paraná. The epidemic was divided in three periods: sowing until first symptoms of disease; beginning of the dis...
Article
Full-text available
The objective of the work was to study the influence of the climate on the progress of the soybean rust (Phakopsora pachyrhizi) under field conditions. Two assays were carried out during the 2005/2006 season in Castro and Arapoti regions, Parana. The epidemic was divided in three periods: sowing until first symptoms of disease; beginning of the dis...
Article
Full-text available
The climate influences the occurrence of plant diseases. The objective of this work was to develop a software to assess risks of occurrence of plant diseases epidemics, in order to understand the interaction among weather - pathogen - host, through the monitoring of the climatic variations in "Campos Gerais" Area. The developed software (Arc-Epidem...
Article
Full-text available
Water balance projects carried out in a regional basis, as opposite to local studies (i.e., considering the single locations of weather stations), need Land Surface Temperature (LST) as well as NDVI (Normalized Difference Vegetation Index) data in a pixel base frame. Images capture by NOAA (National Oceanic and Atmospheric Administration) satellite...

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