Results 31 to 40 of about 1,031 (163)

Auxin herbicide-resistant soybean technologies: a tool for managing susceptible and resistant Sumatran fleabane [PDF]

Ciência Rural
: Sumatran fleabane (Conyza sumatrensis) is one of the main herbicide-resistant weeds in Brazil posing challenges for soybean management. As an alternative to reduce its interference, genetically modified soybean cultivars resistant to auxinic herbicides,
João Pedro de Barros Leinecker, Paula Sinigaglia Angonese, Renan Gonçalves da Silva, Alfredo Junior Paiola Albrecht, Aldo Merotto, Arthur Arrobas Martins Barroso   +5 more
doaj   +2 more sources

Glyphosate-resistant hairy fleabane competition in RR® soybean [PDF]

Bragantia, 2014
Weed competition in the soybean causes changes in morphological and physiological characteristics that reduce the competitive ability of the crop. The objective of this study was to determine the control periods and coexistence of glyphosate-resistant hairy fleabane and its interference in morphological and photosynthetic variables and RR soybean yield.
Silva, Diecson Ruy Orsolin da, Vargas, Leandro, Agostinetto, Dirceu, Mariani, Franciele   +3 more
openaire   +3 more sources

Glyphosate translocation in hairy fleabane (Conyza bonariensis) biotypes [PDF]

Planta Daninha, 2008
The objective of this work was to evaluate the translocation of glyphosate in C. bonariensis plants resistant and susceptible to that herbicide. The 14C-glyphosate was mixed with commercial gyhphosate (800 g ha-1) and applied on the center of the adaxial face of a third node leaf, using a micro syringe, and adding 10 µL of a solution with specific ...
Ferreira, E.A., Galon, L., Aspiazú, I., Silva, A.A., Concenço, G., Silva, A.F., Oliveira, J.A., Vargas, L.   +7 more
openaire   +3 more sources

Influence of spray volume on the control of Conyza spp. in soybean pre-sowing with burndown [PDF]

Brazilian Journal of Biology
The herbicide mixture diclosulam + halauxifen appears to be an alternative for the control of Conyza spp.; however, the spray volume may result in different spray deposition effects on the target and, therefore, on the control.
G. P. Silva, P. V. Silva, B. G. Milhorança, E. S. Medeiros, B. F. Schedenffeldt, P. A. V. Salmazo, M. S. Monteiro, M. Mauad, P. A. Monquero, R. D. C. Dias, C. C. Bicalho   +10 more
doaj   +1 more source

Does the Glyphosate Treatment Interfere Negatively on RNA Integrity in Glyphosate-Resistant and -Sensitive Conyza bonariensis? [PDF]

Planta Daninha, 2019
: The hairy fleabane ( Conyza bonariensis (L.) Cronq.) is among the most problematic glyphosate-resistant weeds to manage around the world. In weed science, molecular approaches such as RNA sequencing (RNA-Seq) and quantitative reverse-transcription ...
C. PIASECKI, D. BENEMANN, I.R. CARVALHO, D. AGOSTINETTO, C.N. STEWART Jr., L. VARGAS   +5 more
doaj   +1 more source

Sumatran Fleabane Control using Glyphosate in Association with Halauxifen-Methyl Formulations [PDF]

Planta Daninha, 2018
ABSTRACT: The effectiveness of a new product has a great importance to weed control, especially those that are difficult to control or resistant to, such as the sumatran fleabane (Conyza sumatrensis). The objective of this research was to evaluate the control of C.
Zobiole, L. H. S., Krenchinski, F. H., Moratelli, G., Costa, N.   +3 more
openaire   +5 more sources

Germinação das sementes de Conyza canadensis e Conyza bonariensis em função da disponibilidade hídrica no substrato Germination of Conyza canadensis and Conyza bonariensis seeds in function of water availability in the substrate

Planta Daninha, 2010
Recentes relatos apresentam Conyza canadensis e C. bonariensis como importantes espécies daninhas do sistema agrícola. A grande adaptabilidade ecológica dessas espécies a sistemas conservacionistas de manejo de solo e o aumento da pressão de seleção ...
O.M. Yamashita, S.C. Guimarães
doaj   +1 more source

Conyza bonariensis growth and development according to thermal time accumulation and photoperiod [PDF]

Pesquisa Agropecuária Brasileira, 2020
: The objective of this work was to characterize the growth and development of hairy fleabane (Conyza bonariensis) according to thermal accumulation and photoperiod, at different sowing times, and to propose a scale representing the main plant ...
Nereu Augusto Streck, Giliardi Dalazen, Anelise da Silva Lencina, Nelson Diehl Kruse, Michel Rocha da Silva, Thiago Schmitz Marques da Rocha, Giovana Ghisleni Ribas, Alencar Junior Zanon, André da Rosa Ulguim   +8 more
doaj   +1 more source

Control of hairy fleabane in sequential and pre-emergence applications in soybean crops

Revista Caatinga, 2023
ABSTRACT The control of Conyza spp. can be conducted at different times in the soybean crop. This study aimed to evaluate the efficiency of controlling Conyza spp. by positioning herbicides at different times and their selectivity in the soybean crop.
Paulo V. da Silva, Daniela M. de Barros, Edson R. Domingos, Patrícia A. Monquero, Roque de C. Dias, Marlon A. Vendruscolo   +5 more
openaire   +2 more sources

Prediction of cardinal temperature by nonlinear regression models in carrot (Daucus carota L.) and three common weed species [PDF]

علوم و فناوری بذر ایران, 2019
Carrot is a particularly difficult crop to manage in terms of weed control. For weed management of carrot, seed germination is a key process because it determines both the number of weeds that could potentially emerge and the timing of their appearance ...
مرجان دیانت
doaj   +1 more source