Effect of temperature on the relationship between Orobanche spp. and carrot (Daucus carota L.)

2001 ◽  
Vol 20 (5) ◽  
pp. 415-420 ◽  
Author(s):  
Hanan Eizenberg ◽  
Zeharia Tanaami ◽  
Reuven Jacobsohn ◽  
Baruch Rubin
Irriga ◽  
2021 ◽  
Vol 26 (1) ◽  
pp. 134-150
Author(s):  
Márcio Aurélio Lins dos Santos ◽  
Thayse Valéria E Silva ◽  
Julianna Catonio Da Silva ◽  
Daniella Pereira dos Santos ◽  
Célia Silva dos Santos

COEFICIENTE DE CULTIVO PARA CENOURA SOB A PERSPECTIVA DE DIFERENTES MODELOS MATEMÁTICOS DA EVAPOTRANSPIRAÇÃO DE REFERÊNCIA     MÁRCIO AURÉLIO LINS DOS SANTOS1; THAYSE VALÉRIA E SILVA2; JULIANNA CATONIO DA SILVA3; DANIELLA PEREIRA DOS SANTOS4; CÉLIA SILVA DOS SANTOS5   1Professor do Curso Bacharelado em Agronomia, Universidade Federal de Alagoas - Campus de Arapiraca, Avenida Manoel Severino Barbosa, s/n, Bom Sucesso, 57309-005, Arapiraca, Alagoas, Brasil. E-mail: [email protected] 2Administradora Técnica de Vendas, Iharabras, Avenida Liberdade, 1701, 18087-170, Sorocaba, São Paulo, Brasil. E-mail: [email protected] 3 Doutoranda em Agronomia (Produção Vegetal), Laboratório de Irrigação e Agrometeorologia,, Universidade Federal de Alagoas - Centro de Ciências Agrárias, BR-104, 57100-000, Rio Largo, Alagoas, Brasil. E-mail: [email protected] 4Doutora em Engenharia Agrícola pela Universidade Federal Rural de Pernambuco - Campus Dois Irmãos, 52171-900, Recife, Pernambuco, Brasil. E-mail: [email protected] 5Doutora em Engenharia Agrícola pela Universidade Federal Rural de Pernambuco - Campus Dois Irmãos, 52171-900, Recife, Pernambuco, Brasil. E-mail: [email protected]     1 RESUMO   O coeficiente de cultivo (Kc) é um parâmetro essencial para o dimensionamento e manejo dos sistemas de irrigação e uso racional da água. Dessa forma, o objetivo neste trabalho foi determinar o coeficiente de cultivo da cenoura (Daucus carota L.) por meio de diferentes modelos matemáticos da evapotranspiração de referência no Agreste alagoano. O experimento foi realizado na área experimental do Campus da Universidade Federal de Alagoas (UFAL), Arapiraca-AL. Foram utilizados três lisímetros de drenagem, instalados em canteiro com dimensões de 3,5 x 1,0 m de comprimento e largura respectivamente com área total de 3,5 m2. O Kc foi obtido pela relação entre a evapotranspiração da cultura (ETc) e a evapotranspiração de referência (ETo) estimada pelos métodos de Penman-Monteith, padrão-FAO (PM), Hargreaves-Samani (HS), Radiação Solar (RS), Blaney-Criddle (BC) e de Priestley-Taylor (PT). Os valores de Kc obtidos foram: KcPM (0,61; 1,00; 1,26 e 0,99), KcHS (0,63; 1,09; 1,27 e 0,94), KcRS (0,65; 1,03; 1,36 e 1,06), KcBC (0,69; 1,11; 1,52 e 118) e KcPT (0,67; 1,08; 1,25 e 0,99) para as fases inicial, crescimento, intermediária e final, respectivamente. Na ausência de informações agrometeorológicas para se estimar a ETo pelo método padrão, recomendam-se utilizar os valores de obtidos pelo método de Blaney-Criddle.   Keywords: Daucus carota, lisimetria, dados climáticos, manejo da irrigação.     SANTOS, M. A. L.; SILVA, T. V.; SILVA, J. C.; SANTOS, D. P.; SANTOS, C. S. CARROT CROP COEFFICIENT FROM THE PERSPECTIVE OF DIFFERENT MATHEMATICAL MODELS OF REFERENCE EVAPOTRANSPIRATION       2 ABSTRACT   The crop coefficient (Kc) is an essential parameter for the design and management of irrigation systems and rational reasonable water. Thus, the aim of the present work was to determine the crop coefficient of the carrot (Daucus carota L.) through different mathematical models of the reference evapotranspiration in the Agreste alagoano. The experiment was performed in the experimental area of the Campus of the Federal University of Alagoas (UFAL), Arapiraca-AL, Brazil. Three lysimeters of drainage were used, installed on a bed with dimensions of 3.5 x 1.0 m in length and width, respectively, with a total area of 3.5 m2. The Kc was obtained from the relationship between crop evapotranspiration (ETc) and reference evapotranspiration (ETo) estimated using the methods of Penman-Monteith-FAO (PM), Hargreaves-Samani (HS), Solar Radiation (SR), Blaney-Criddle (BC) and Priestley-Taylor (PT). The values of Kc obtained were KcPM (0.61; 1.00; 1.26 and 0.99), KcHS (0.63; 1.09; 1.27 and 0.94), KcSR (0.65; 1.03; 1.36 and 1.06), KcBC (0.69; 1.11; 1.52 and 118) and KcPT (0.67; 1.08; 1.25 and 0.99) for the initial, growth, intermediate and final phases, respectively. In the absence of agrometeorological information to estimate ETo by Penman-Monteith-FAO method, it is recommended to use the values obtained by Blaney-Criddle ETo method.   Keywords: Daucus carota, lysimetry, climate data, irrigation management.


2019 ◽  
Vol 26 (1) ◽  
pp. 1
Author(s):  
Suriani Rauf ◽  
Manjilala Manjilala ◽  
Elvi Kusuma

The behavior of people who less consume vegetables and fruit can have a negative impact on health. The lack of appetite for vegetable consumption by the society made the researchers interested in making a combination of vegetables, namely carrots with local foods, namely Baroncong.This research aims to determine the acceptability of local baroncong snacks with the addition of carrots.This research is a pre-experimental study. The panelists from this study consisted of 30 Nutrition Department Students from Health Polytechnic Ministry of Health Makassar. Assessment based on taste aspects, color of aroma and texture of baroncong products with the addition of carrots 50%, 75%, 100% with the criteria of very like, like, dislike and very dislike.The results showed that the acceptability of baroncong with the addition of carrots in terms of taste was a concentration of 75%, which was very much as much as 46.7% and liked as much as 50%, the color aspect was 50% concentration consisting of 36.7% likes and likes as much as 53.3%, the aroma aspectis a concentration of 50% which consists of very much as much as 33.3% and likes as much as 63.3%, in terms of aspects of texture are concentrations of 50% and 75%, each of which consists of as much as 23.3% and likes as much as 63, 3%. Based on these data, Baroncong with the addition of carrots received is a concentration of 75%.


Author(s):  
Araújo Thaís Jaciane ◽  
Santos Newton Carlos ◽  
Barros Sâmela Leal ◽  
Melo Mylena Olga Pessoa ◽  
Nascimento Amanda Priscila Silva

Planta ◽  
1980 ◽  
Vol 149 (3) ◽  
pp. 283-287 ◽  
Author(s):  
Wolfgang No� ◽  
Christian Langebartels ◽  
Hanns Ulrich Seitz

Author(s):  
D. T. Gauld ◽  
J. E. G. Raymont

The respiratory rates of three species of planktonic copepods, Acartia clausi, Centropages hamatus and Temora longicornis, were measured at four different temperatures.The relationship between respiratory rate and temperature was found to be similar to that previously found for Calanus, although the slope of the curves differed in the different species.The observations on Centropages at 13 and 170 C. can be divided into two groups and it is suggested that the differences are due to the use of copepods from two different generations.The relationship between the respiratory rates and lengths of Acartia and Centropages agreed very well with that previously found for other species. That for Temora was rather different: the difference is probably due to the distinct difference in the shape of the body of Temora from those of the other species.The application of these measurements to estimates of the food requirements of the copepods is discussed.


2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Rui Zhang ◽  
Yujie Meng ◽  
Hejia Song ◽  
Ran Niu ◽  
Yu Wang ◽  
...  

Abstract Background Although exposure to air pollution has been linked to many health issues, few studies have quantified the modification effect of temperature on the relationship between air pollutants and daily incidence of influenza in Ningbo, China. Methods The data of daily incidence of influenza and the relevant meteorological data and air pollution data in Ningbo from 2014 to 2017 were retrieved. Low, medium and high temperature layers were stratified by the daily mean temperature with 25th and 75th percentiles. The potential modification effect of temperature on the relationship between air pollutants and daily incidence of influenza in Ningbo was investigated through analyzing the effects of air pollutants stratified by temperature stratum using distributed lag non-linear model (DLNM). Stratified analysis by sex and age were also conducted. Results Overall, a 10 μg/m3 increment of O3, PM2.5, PM10 and NO2 could increase the incidence risk of influenza with the cumulative relative risk of 1.028 (95% CI 1.007, 1.050), 1.061 (95% CI 1.004, 1.122), 1.043 (95% CI 1.003, 1.085), and 1.118 (95% CI 1.028, 1.216), respectively. Male and aged 7–17 years were more sensitive to air pollutants. Through the temperature stratification analysis, we found that temperature could modify the impacts of air pollution on daily incidence of influenza with high temperature exacerbating the impact of air pollutants. At high temperature layer, male and the groups aged 0–6 years and 18–64 years were more sensitive to air pollution. Conclusion Temperature modified the relationship between air pollution and daily incidence of influenza and high temperature would exacerbate the effects of air pollutants in Ningbo.


ChemInform ◽  
2006 ◽  
Vol 37 (42) ◽  
Author(s):  
Nicolas Blanchard ◽  
Pierre van de Weghe

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