Results 41 to 50 of about 283 (142)

Sowing depth and light intensity on the emergence and development of weeds

Revista Ciência Agronômica, 2021
Weeds are one of the ecological factors that directly affect agricultural costs. Thus, understanding the emergence and development of these species is essential for the decision-making on weed control strategies. This study aims to evaluate the effect of
Guilherme Sasso Ferreira Souza, Ricardo Fagundes Marques, Maria Renata Rocha Pereira, Sidnei Roberto de Marchi, Dagoberto Martins   +4 more
doaj   +1 more source

Floral biology and breeding system of three Ipomoea weeds Biologia floral e sistema reprodutivo de três espécies daninhas de Ipomoea

Planta Daninha, 2007
The floral biology of three weeds, Ipomoea cairica, I. grandifolia and I. nil (Convolvulaceae), was studied in Botucatu and Jaboticabal, São Paulo, in southeastern Brazil.
R.C.S. Maimoni-Rodella, Y.A.N.P. Yanagizawa   +1 more
doaj   +1 more source

Eficácia do herbicida amicarbazone no controle em pós-emergência de espécies de corda-de-viola (Ipomoea grandifolia e Merremia cissoids) [PDF]

Revista Brasileira de Herbicidas, 2009
Different weeds species are present in Brazilian sugar cane areas interfering negatively in productive process, and morningglory species, Ipomoea sp. and Merremia sp., are outstanding, particularly in raw cane areas. This way, the objective of this study was to verify the effectiveness of amicarbazone herbicide in controlling Ipomoea grandifolia and ...
Lucas Perim, Roberto Estevão Bragion Toledo, Eduardo Negrisoli, Marcelo Rocha Corrêa, Caio Antônio Carbonari, Caio Vitagliano Santi Rossi, Edivaldo Domigues Velini   +6 more
openaire   +1 more source

Carfentrazone-ethyl aplicado em pós-emergência para o controle de Ipomea spp. e Commelina benghalensis na cultura da cana-de-açúcar Carfentrazone-ethyl applied in post-emergence to control Ipomoea spp. and Commelina benghalensis in sugarcane crop

Planta Daninha, 2006
Este trabalho teve como objetivos determinar a eficácia e seletividade do carfentrazone-ethyl no controle de plantas daninhas na cultura da cana-de-açúcar e avaliar curvas de dose-resposta desse herbicida em Ipomoea spp.
P.J. Christoffoleti, A. Borges, M. Nicolai, S.J.P. Carvalho, R.F. López-Ovejero, P.A. Monquero   +5 more
doaj   +1 more source

Update of the Xylella spp. host plant database

EFSA Journal, Volume 16, Issue 9, September 2018., 2018
Abstract Following a request from the European Commission, EFSA periodically updates the database on the host plants of Xylella spp. While previous editions of the database (2015 and 2016) dealt with the species Xylella fastidiosa only, this database version addresses the whole genus Xylella, including therefore both species X.
European Food Safety Authority (EFSA)
wiley   +1 more source

Métodos de superação de dormência em sementes de Ipomoea e Merremia Dormancy breaking methods in Ipomoea and Merremia seeds

Planta Daninha, 2003
Este trabalho objetivou avaliar os efeitos de métodos de superação de dormência sobre a germinação das sementes de Ipomoea grandifolia, I. hederifolia, I. nil, I. quamoclit, Merremia aegyptia e M. cissoides.
A.A.P.M. Azania, C.A.M. Azania, M.C.M.D. Pavani, M.C.S. Cunha   +3 more
doaj   +1 more source

Height‐related scaling of phloem anatomy and the evolution of sieve element end wall types in woody plants

New Phytologist, Volume 214, Issue 1, Page 245-256, April 2017., 2017
Summary In the sieve elements (SEs) of the phloem, carbohydrates are transported throughout the whole plant from their site of production to sites of consumption or storage. SE structure, especially of the pore‐rich end walls, has a direct effect on translocation efficiency.
Johannes Liesche, Marcelo R. Pace, Qiyu Xu, Yongqing Li, Shaolin Chen   +4 more
wiley   +1 more source

Ungulate impacts on herbaceous‐layer plant communities in even‐aged and uneven‐aged managed forests

Ecosphere, Volume 7, Issue 6, June 2016., 2016
Abstract Forest management and ungulate herbivory are extant drivers of herbaceous‐layer community composition and diversity. We conducted a white‐tailed deer (Odocoileus virginianus) exclosure experiment across a managed landscape to determine how deer impacts interact with the type of forest management system in influencing herb‐layer (all vascular ...
Bryan D. Murray, Christopher R. Webster, Michael A. Jenkins, Michael R. Saunders, G. Scott Haulton   +4 more
wiley   +1 more source

Eficácia do herbicida oxyfluorfen com a cobertura de palha no controle de plantas daninhas Efficacy of oxyfluorfen with straw cover in controlling weeds

Planta Daninha, 2009
A palha pode alterar a dinâmica do herbicida oxyfluorfen no sistema de cana-crua; assim, este trabalho teve por objetivo avaliar a eficácia do oxyfluorfen em condições de casa de vegetação, com a cobertura de palha, no controle das plantas daninhas que ...
E. Negrisoli, M.R. Correa, C.V.S. Rossi, C.A. Carbonari, E.D. Velini, L. Perim   +5 more
doaj   +1 more source

Competição relativa de espécies de plantas daninhas com dois cultivares de soja Relative weed species competition with two soybean cultivars

Planta Daninha, 2002
Um experimento para avaliação da competição relativa de espécies de plantas daninhas, em relação a cultivares de soja de ciclos vegetativo precoce (Embrapa-48) e médio (Embrapa-62), foi instalado em Londrina-PR, em 1998/99.
E. Voll, D.L.P. Gazziero, A.A.M. Brighenti, F.S. Adegas   +3 more
doaj   +1 more source