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Author(s): NACHTIGALL, L. G.; ARAUJO, R. M.; NACHTIGALL, G. R.

Abstract?This paper studies the use of Convolutional Neural Networks to automatically detect and classify diseases, nutritional deficiencies and damage by herbicides on apple trees from images of thei... ...

Repository: BDPA     Publication year: 2016

Author(s): BIZZOTO, L. de A.; SANTOS, R. S. S. dos; BOFF, M. I. C.

The apple tree depends on cross-pollination for adequate fruiting. The objective of this study was to evaluate the rate of parasitism by Varroa destructor mites and the infection rate of Nosema sp. in... ...

Repository: BDPA     Publication year: 2018

Author(s): NICKEL, O.; GRYNBERG, P.; FAJARDO, T. V. M.

In an attempt to provide additional information on the virome in apples in Southern Brazil in face of recurrent events of tree decline, plant samples of regional apple orchards have been submitted to... ...

Repository: BDPA     Publication year: 2023

Author(s): ALVES, S. A. M.; NUNES, C. C.

European canker, caused by Neonectria ditissima, is an important disease of apple in the temperate climate of southern Brazil. Monthly inoculations of this fungus were carried out on various wound typ... ...

Repository: BDPA     Publication year: 2017

Author(s): AMARANTE, C. V. T. do; SILVEIRA, J. P. G.; FREITAS, S. T. de; STEFFENS, C. A.; MITCHAM, E. J.

The objective of this study was to assess the effects of post-bloom (PB) or preharvest (PH) treatments of Braeburn apple trees with prohexadione-calcium (ProCa; 300 mg L-1), an inhibitor of gibberelli... ...

Repository: BDPA     Publication year: 2021

Author(s): NACHTIGALL, G. R.; DECHEN, A. R.

To evaluate three procedures of the calculation of DRIS indices, as well as the efficiency of DRIS as a method for the interpretation of apple tree leaf analyses. This study uses data collected in app... ...

Repository: BDPA     Publication year: 2007

Author(s): NACHTIGALL, L. G.; ARAUJO, R. M.; NACHTIGALL, G. R.

Rapid diagnosis ofsymptoms caused by pest attack, diseases and nutritional or physiological disorders in apple orchards is essential to avoid greater losses. This paper aimed to evaluate the efficienc... ...

Repository: BDPA     Publication year: 2017

Author(s): NACHTIGALL, G. R.; DECHEN, A. R.

ABSTRACT: For Brazilian conditions there are still no studies on the use of the diagnosis and recommendation of the integrated system (DRIS) for nutritional diagnosis of the apple tree. The nutritiona... ...

Repository: BDPA     Publication year: 2007

Author(s): MACEDO, T. A. de; RUFATO, A. de R.; SANDER, G. F.; RUFATO, L.; KRETZSCHMAR, A. A.; ARRUDA, R. D.

Repository: BDPA     Publication year: 2016

Author(s): MARTINS, M. V. V.; LIMA, J. S.; HAWERROTH, F. J.; OOTANI, M. A.; ARAÚJO, F. S. A.; CARDOSO, J. E.; SERRANO, L. A. L.; VIANA, F. M. P.

In the last years, several apple varieties have been well-adapted to grow under the tropical conditions of northeastern Brazil.

Repository: BDPA     Publication year: 2018

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