Escala diagramática para avaliação da severidade da mancha alvo da soja
TL;DR: A mancha alvo da soja, causada pelo fungo Corynespora cassiicola, e encontrada em praticamente todas as regioes de cultivo de soja do Brasil e pode causar perdas economicas, resultou em melhor acuracia e precisao das estimativas realizadas.
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Abstract: A mancha alvo da soja, causada pelo fungo Corynespora cassiicola, e encontrada em praticamente todas as regioes de cultivo de soja do Brasil e pode causar perdas economicas. Esse trabalho teve como objetivo elaborar e validar uma escala diagramatica para avaliacao da severidade da mancha alvo da soja. Para tal, foram coletados foliolos de soja com sintomas da doenca, onde se mediu a severidade, determinando-se os limites minimos e maximos, e os niveis intermediarios da escala de acordo com a lei do estimulo visual de Weber-Fechner. A escala elaborada apresentou sete niveis de severidade: 1, 2, 5, 9, 19, 33 e 52%. A validacao foi realizada por oito avaliadores, sem experiencia em quantificar essa doenca, que estimaram a severidade de 40 foliolos com diferentes niveis de severidade da mancha alvo, sem e com o auxilio da escala. A utilizacao da escala diagramatica resultou em melhor acuracia e precisao das estimativas realizadas, sendo uma ferramenta de facil e rapida utilizacao, que pode ser adotada para auxiliar na avaliacao da severidade da mancha alvo da soja.
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Citations
Conventional PCR for detection of Corynespora cassiicola in soybean seeds
TL;DR: The aim of this study was to evaluate the use of conventional PCR in detecting C. cassiicola in soybean seeds and the GA4-F/GA4-R primers described in the literature were tested for their specificity and sensitivity.
Development of a diagrammatic scale for the evaluation of postharvest physiological deterioration in cassava roots
TL;DR: In this paper, the authors developed a scale to assess the severity of postharvest physiological deterioration (PPD) of cassava roots, and validated this scale for accuracy and reproducibility estimates.
Escala diagramática para avaliação da severidade da mancha alvo em folhas de pepineiro
Adriana Teramoto,Renata Alves de Aguiar,Riccely Ávila Garcia,M C Martins,Marcos Gomes da Cunha +4 more
TL;DR: The proposed diagrammatic scale was considered adequate to estimate the target spot severity in cucumber leaves, and it can be used in epidemiologic studies and in evaluation strategies for controlling this disease.
Avaliação de fungicidas no controle de antracnose e mancha alvo, e no rendimento da cultura da soja
TL;DR: Evaluating the efficiency of fungicides for the control of anthracnose and target spot in soybean in a commercial area in the north of Mato Grosso State, Brazil found treatment T2 was more efficient in controlling target spot.
References
Diagrammatic scale for assessment of soybean rust severity
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