Pablo Ricardo Nitsche - Academia.edu (original) (raw)

Papers by Pablo Ricardo Nitsche

Metodologia para delimitacao dos ambientes de producao: Dados, Pre-processamento, Analise de agru... more Metodologia para delimitacao dos ambientes de producao: Dados, Pre-processamento, Analise de agrupamento, Mapas. Evolucao da area, producao e produtividade de soja no Parana de 2000 a 2013. Relacao entre variaveis ambientais com a produtividade e a estabilidade de producao, nas safras de 1999/2000 a 2012/2013. Delimitacao dos ambientes de producao de soja no Parana.

African Journal of Agricultural Research, 2020

Mango cultivation is one of the key economic agricultural activities of fruit in Brazil. In South... more Mango cultivation is one of the key economic agricultural activities of fruit in Brazil. In Southern Brazil, mango presents vulnerability thanks to its frost sensitivity, indicating the relevance of climate studies to improve the production and agricultural techniques, in the context of sustainable agriculture and climate change. Agroclimatic zoning should be one of the first information to be considered when starting its cultivation. The objective of this study is to carry out climatic risk zoning for mango tree (Mangifera indica) in the basin of Paraná River III, Brazil. Meteorological data from 43 stations, from 1976 to 2018, were used. The climatic risk analysis was based on the requirements of the mango for precipitation, water balance, average annual temperature, and frost tolerance. The occurrence of frosts is the key restrict factor for production in the area of study. This meteorological factor restricted mango cultivation in the central-eastern portion of the basin. In other areas, the risk is present but the mango cultivation is recommended.

International Journal of Biometeorology, 2015

Previous numerical simulations have suggested that the area adjacent to Itaipu Lake in Southern B... more Previous numerical simulations have suggested that the area adjacent to Itaipu Lake in Southern Brazil is significantly affecting the local thermal regime through development of a lake breeze. This has led to concerns that soybean growth and development, and consequently yield, has been affected by the creation of the artificial lake in this important agricultural region, but a systematic climatological study of the thermal effects of Itaipu Lake has not been conducted. The objectives of this study were to assess the spatial pattern of minimum and maximum air temperatures in a 10-km-wide area adjacent to Itaipu Lake as affected by distance from the water. Measurements were conducted over 3 years in seven transects along the shore of Itaipu Lake, with five weather stations placed in each transect. Phenological observations in soybean fields surrounding the weather stations were also conducted. Generalized additive models for location, scale, and shape (GAMLSS) analysis indicated no d...

IRRIGA, 2021

REMOTE SENSING ALLOWS TO ESTIMATE WATER STRESS AND YIELD LOSSES OF BEAN CULTIVARS DANIEL SOAR... more REMOTE SENSING ALLOWS TO ESTIMATE WATER STRESS AND YIELD LOSSES OF BEAN CULTIVARS DANIEL SOARES ALVES1; PABLO RICARDO NITSCHE1; VANIA MODA CIRINO2; MARIA BRIGIDA DOS SANTOS SCHOLZ1; JOSÉ DOS SANTOS NETO2 E PAULO HENRIQUE CARAMORI1 1 Área de Agrometeorologia, Ecofisiologia e Tecnologia de Alimentos, Instituto de Desenvolvimento Rural do Paraná IAPAR – EMATER, Rod. Celso Garcia Cid, 375, Conjunto Ernani Moura Lima II, 86.047 – 902, Londrina, Paraná, Brasil. danielsoares@idr.pr.gov.br; pablo.nitsche@idr.pr.gov.br; mbscholz@iapar.br; pcaramori@gmail.com 2 Área de Melhoramento e Propagação Vegetal, Instituto de Desenvolvimento Rural do Paraná IAPAR – EMATER, Rod. Celso Garcia Cid, 375, Conjunto Ernani Moura Lima II, 86.047 – 902, Londrina, Paraná, Brasil. vamoci@idr.pr.gov.br ; js.neto@idr.pr.gov.br 1 ABSTRACT Reflectance measurements can indicate the physiological quality of plants and contribute to the correct differentiation of cultivars. Here, we studied the spectral res...

Revista Brasileira de Geografia Física, 2019

A precipitação de granizo, um evento extremo caracterizado por precipitação de água em estado sól... more A precipitação de granizo, um evento extremo caracterizado por precipitação de água em estado sólido, tem alta capacidade destrutiva no meio rural e no urbano. Sua dinamicidade pouco compreendida pode comprometer atividades humanas, visto que estes eventos geram transtornos e prejuízos frequentes. A Mesorregião Sudoeste Paranaense (MRSPR) possui grande área de produção agrícola e aproximadamente 500 mil habitantes em situação de grande vulnerabilidade a extremos meteorológicos, o que revela a importância de estudos que auxiliem o planejamento e tomada de decisão na região. Este trabalho teve como objetivo identificar a frequência, ocorrência e impactos de precipitações de granizo na MRSPR através de três fontes distintas de dados: estações agrometeorológicas, jornais e relatórios da Defesa Civil. Foram identificados 244 episódios de granizo na região pelas estações do IAPAR - uma média de 7 eventos por ano - além de 59 decretos de situação de emergência, demonstrando a vulnerabilida...

Semina-ciencias Agrarias, Nov 30, 2018

A phenomenon called thermal inversion, in which there is the accumulation of colder and denser ai... more A phenomenon called thermal inversion, in which there is the accumulation of colder and denser air in the layers closer to the soil, occurs in radiative frost nights, resulting in a temperature gradient with differences between the meteorological screen and grass, which vary depending on cooling conditions. Knowing this temperature difference assists in taking preventive measures against radiative frosts, as well as in estimating the probability of their occurrences. In this context, this study aimed to verify the adjustment of different probability distributions to determine the differences between the minimum temperature measured in the meteorological screen and grass temperature below 0 °C for eight regions of the Paraná State, as well as the probability of occurring these differences and adjust estimation equations of grass temperature from minimum air temperature. Temperature differences between the screen and grass were calculated and probability distributions of their occurrences were adjusted in order to determine risks per intervals of temperature differences. Estimation equations of grass temperature were adjusted from minimum screen temperatures. Average gradients of minimum temperature were observed between the screen and grass ranging from 4.2 to 6.3 °C in the analyzed regions. The average temperature difference measured in the meteorological screen and grass for the Paraná State was 5 °C. The probabilistic model of normal distribution is the most suitable for determining the probability of occurring the differences between the screen and grass temperatures for the Paraná State. Regional relief and climate conditions influence the magnitude of the minimum temperature gradient measured in the meteorological screen and grass. Estimation equations can be useful to determine the grass temperature based on the minimum air temperature for periods in which there is no such data and thus provide a subsidy for studies of risk analysis of frosts. The results of this analysis are empirical and the equations should be used in regions in which they were adjusted aiming at a higher accuracy.

Geografia em Questão, Oct 3, 2019

Resumo: Os eventos extremos de precipitação causam severos danos tanto no espaço urbano quanto no... more Resumo: Os eventos extremos de precipitação causam severos danos tanto no espaço urbano quanto no rural. Ocorrências de alagamentos, enxurradas e inundações tornam-se cada vez mais frequentes e marcantes em todo o mundo. Esses atingem os espaços de maneira homogênea, no entanto a população está exposta a riscos distintos devido a vulnerabilidade socioambiental. Sendo assim, o objetivo desse estudo foi analisar a ocorrência e variabilidade pluviométrica, gênese e frequência dos impactos dos eventos extremos de precipitação em Londrina-PR. Os impactos dos eventos extremos foram averiguados com base nas chuvas de 11 de janeiro de 2016, a maior registrada na série, com altura pluviométrica de 275mm no intervalo de 24 horas. Além disso, as séries pluviométricas da estação meteorológica de Londrina foram utilizadas para avaliar a associação entre os totais anuais, sazonais, mensais e diários de precipitação com os eventos de El Niño-Oscilação Sul (ENOS), com o recorte temporal de 1976-2018. Identificou-se que os meses de verão são os mais propícios as ocorrências de eventos extremos, com parte expressiva dos eventos extremos e maiores alturas de precipitação ocorrendo em períodos de El Niño, enquanto os períodos secos predominam em condições de La Niña.

The water availability is the factor that most affects the production of soybean crops in the sta... more The water availability is the factor that most affects the production of soybean crops in the state of Parana. Dry spells are extremely damaging to agricultural production and, therefore, studies that identify the frequency and intensity of these events are relevant to the planning of operations. Thus, the objective of this study was to evaluate the rainfall availability and to determine the frequency of dry spells in the Meso-region of Parana state. Precipitation data were collected from 48 stations distributed throughout the mesoregion between 1976 and 2018. Rainfall variability was analyzed in the annual, monthly and 10-days scales, and the frequencies of dry periods of 10 days from September to March and ≥ 20 days during the year. It was verified that the mesoregion showed differences in the amount of precipitation, but with enough rainfall for soybean cultivation. The relief favors the distribution of rainfall in the region. The southern portion has the highest mean precipitat...

This study had the objective of evaluate the effect of different irrigation depth on yield for th... more This study had the objective of evaluate the effect of different irrigation depth on yield for three different common bean (Phaseolus vulgaris L.) cultivars. The experiment performed in greenhouse using PVC pots with 70 dm3. The cultivars analyzed was IAPAR 81, IPR Tangará and IPR Curió and the irrigations occurred when the soil water tension showed 30 kPa considering tensiometers installed at 0.15 m of depth (T1), 0.20 m (T2) and 0.30 m (T3) defining three levels of water in the soil. The plant variable such as dry leaves mass, dry stem mass, dry pods mass, dry roots mass, as well as grain yield and the yield index were determined and analyzed statistically. IAPAR 81 cultivar presented higher grain yield for T2, and IPR Tangará and IPR Curió were not statistically different for T2 and T3. The dry root mass results were different only between cultivars, with similar grain yield between IAPAR 81 and IPR Tangará, and IPAR Curió presented mean yield reduction of 52% for all three water...

Brazil is the largest producer and consumer of passion fruit in the world. Fruticulture is a prom... more Brazil is the largest producer and consumer of passion fruit in the world. Fruticulture is a prominent segment of Brazilian agriculture. Despite recent technological and scientific advances, the climate is among the most important variable in crops productions. In this context, agroclimatic zoning should be one of the first information to consider before starting the cultivation of a particular crop. The purpose of this paper was to perform agroclimatic risk zoning for passion fruit (Passiflora edulis Sims) in the basin of Parana river 3, located in Parana state, South of Brazil. For this we used meteorological data from 43 stations with historical series between from 1976 to 2019. The analysis of agroclimatic risk was based on the species requirements, such as rainfall, annual water deficit, annual average temperature, sunshine and the risk of frost. The occurrence of frost was the most limiting factor for production in the region. This meteorological factor restricted planting in ...

The drought is a meteorological phenomenon that causes relevant impacts for the agricultural sect... more The drought is a meteorological phenomenon that causes relevant impacts for the agricultural sector, being considered the main frustrator of crops. The objective of this work was to quantify the risks of extreme drought in different macroregions in the state of Parana in the four seasons of the year. Daily rainfall data from 30 weather stations were used from 1976 to 2015. For each year, the number of days without rainfall for the summer, autumn, winter, and spring quarters was determined. The droughts were identified using the Gumbel probability density function, with the α and β parameters obtained by the Lieblein method at 20% probability. It was concluded that the state of Parana is subject to drought periods longer than 60 days, at any time of the year. The northern and northwestern regions are subject to increased risks of extreme drought, followed by the central, western and coastal regions. Spring and summer are the seasons with the lowest risk of drought, while autumn and w...

The agrometeorological monitoring of the coffee crop is critical for planning and decision making... more The agrometeorological monitoring of the coffee crop is critical for planning and decision making related to pest and diseases control. The aim of this study was to monitor the incidence of pests and diseases in Northern Paraná, relating the events with climate conditions, in order to minimize losses of production and indicate the need for control. The study was conducted at the experimental station of IAPAR in Londrina, Parana State, Brazil. The evaluations were performed monthly from August 2012 to July 2013 in a plot of 50 plants of the cultivars Catuaí and Mundo Novo and of 30 plants of the cultivar IPR 106, on a Distroferric Latosol. Two leaves per plant were randomly collected, on the north and south faces and classified in the following groups: non-damaged leaf, leaf with cercospora leaf spot, leaf mines with coffee leaf miner and leaf with rust spores. It was noticed that dry spells and low vigor of the coffee plants were decisive for a high expression of Cercospora. Regular...

Закарпатські філологічні студії висловлювання свідчать про те, що поетеса бездоганно володіє жанр... more Закарпатські філологічні студії висловлювання свідчать про те, що поетеса бездоганно володіє жанром поетичного лаконізму, коли сюжет сконцентрований в одному реченні, в одній фразі, іноді навіть в одному слові.

Fruticulture is a prominent segment of Brazilian agriculture. It presents a continuous evolution ... more Fruticulture is a prominent segment of Brazilian agriculture. It presents a continuous evolution of production, attending to the growing internal and external demand, besides being one of the main activities of family agriculture. Despite of recent technological and scientific advances, climate is still the most important variable in agricultural productivity. Studies that show the climatic variability and the impact on the physiological development of plant species are fundamental for the planning and agricultural calendar, aiming the conservation of resources and a sustainable management of the production. In this context, one of the first information to be considered when starting a crop is agro-climatic zoning, since it provides climate-related risk information and helps in decision-making and agricultural planning. Thus, the objective of this work was to carry out agroclimatic risk zoning for the Pineapple ( Ananas comosus ) in the Parana River basin 3, Parana state, Brazil. Fo...

IRRIGA, 2019

ASPECTOS ESPACIAIS DA EVAPOTRANSPIRAÇÃO COM O FOCO NO DIMENSIONAMENTO DE SISTEMAS DE IRRIGAÇÃO ... more ASPECTOS ESPACIAIS DA EVAPOTRANSPIRAÇÃO COM O FOCO NO DIMENSIONAMENTO DE SISTEMAS DE IRRIGAÇÃO JEFFERSON VIEIRA JOSÉ1; LUCAS DA COSTA SANTOS2; DANIEL SOARES ALVES3; PABLO RICARDO NITSCHE4; MARCOS VINICIUS FOLEGATTI5 E WAGNER WOLFF6 1Centro multidisciplinar, UFAC, Campus Floresta, Rua Estrada da Canela Fina, KM 12 Gleba Formoso - São Francisco, CEP: 69895-000, Cruzeiro do Sul – AC, Brasil, e-email: jfvieira@hotmail.com.br 2Departamento de Agronomia, UFVJM, Campus JK - Rodovia MGT 367, Km 583, nº5000 - Bairro Alto da Jacuba, CEP: 39100-000 – Diamantina – MG, Brasil, e-email: lucas.santos@ufvjm.edu.br 3Departamento de Agrometeorologia. Instituição: Instituto Agronômico do Paraná - IAPAR. Endereço: Rodovia Celso Garcia Cid, km375, Bairro Ernani Moura Lima II, CEP: 86047-90, Londrina - PR, Brasil, e-mail: danielsoares@iapar.br 4Departamento de Agrometeorologia. Instituição: Instituto Agronômico do Paraná - IAPAR. Endereço: Rodovia Celso Garcia Cid, km375, Bairro Ernani Moura Lima ...

Australian Journal of Crop Science, Apr 20, 2018

Biofuels from soybean and corn oil can potentially create new markets in Brazil. The key to a sta... more Biofuels from soybean and corn oil can potentially create new markets in Brazil. The key to a stable biofuel production is the use of high-yielding varieties tolerant to environmental stresses. The inter-annual variability of rainfall caused by large scale meteorological phenomena, such as El Niño-Southern Oscillation and irregular distribution of precipitation has been a major cause of uncertainty in agricultural production in Brazil. The objective of this study was to perform an inter-annual and interregional analysis of soybean and corn yield in relation to water deficit in a transitional zone between subtropical and tropical climate in southern Brazil. The study was conducted in the state of Parana (22-26ᵒ S), one of the main soybean and corn producing areas in the country. The state was divided into six regions (Northwest, North, West, Midwest, Southwest, and South), and the year with the highest productivity in each region was used as a reference to calculate the relative yield losses per year. These losses were correlated with the accumulated water deficit between November and January. The relative yield losses of soybean and corn had a nonlinear relationship with water deficit within each region. Based on the market prices of each year, we estimated that the total losses due to water deficit over the nine growing seasons were 8.36and8.36 and 8.36and2.67 billion for soybean and corn, respectively. In terms of productivity, the South region showed the highest stability, whereas the Northwest region the lowest stability in response to water deficit. The results show that inter-annual and regional variability of water stress play an important role in soybean and corn productivity in the transition zone between tropical and subtropical climate in southern Brazil.

O Instituto Agronomico do Parana (IAPAR) foi fundado em 1972 com a missao de gerar pesquisas e te... more O Instituto Agronomico do Parana (IAPAR) foi fundado em 1972 com a missao de gerar pesquisas e tecnologias para a agropecuaria paranaense. Apos a geada devastadora de julho de 1975, o Governo do Parana incentivou uma serie de politicas de diversificacao de areas de cultivo de cafe. No entanto, a expansao de culturas anuais por todo o Estado resultou no aumento dos niveis de erosao e degradacao dos solos. Desde o inicio das atividades do IAPAR, a equipe de agrometeorologia desenvolveu e adaptou uma serie de tecnologias para apoiar o desenvolvimento da agricultura paranaense. As pesquisas focaram em estudos para minimizar danos de geadas, analises da climatologia do Estado, tecnicas de manejo em sistemas de producao sustentaveis, zoneamento agricola, mudancas climaticas e sistemas de monitoramento e alerta. Este trabalho faz uma sintese das principais contribuicoes dos estudos agrometeorologicos realizados.