A call for weed research in industrial hemp (<i>Cannabis sativa</i> L)

Sandler, Leah; Gibson, K. D.

doi:10.1111/wre.12368

Cited by 30 publications

(22 citation statements)

References 22 publications

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“…However, other studies suggest that weed control is essential for high crop yields when hemp is grown for seed or at low plant densities (Jankauskiené et al, 2014;Flessner et al, 2019). Although these latter studies provide indication that weed infestation in early crop growth can cause severe yield losses in hemp, information on crop interaction with weed communities of local agro-ecosystems under different types of cultural management is very scarce (Sandler and Gibson, 2019). Therefore, the aim of this study was to investigate the effect of different fertilization rates and weed management on weed flora and crop growth parameters during the initial growth phase.…”

Section: Methodsmentioning

confidence: 99%

Effect of Fertilization and Weed Management on Weed Flora of Hemp Crop

et al. 2020

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Hemp is known to have a competitive advantage over weeds. Despite its suppressive ability, weed infestation remains an important issue during the early growth of the crop. The aim of this study was to determine the effect of fertilization and weed management on weed flora and hemp growth parameters during initial growth in the 2019 season. The experiment was laid out in a split-split plot design with three replicates: three hemp cultivars as main plots, three fertilization treatments as sub-plots and two sub-sub-plots (weedy, weed free). For the computation of height and biomass weight, 10 plants were randomly selected in each plot. Weed species were collected by quadrate and density and biomass weight were determined. ANOVA revealed that all factors and their interactions significantly affected plant traits. Hemp cultivars showed different competitive ability. ‘Futura 17’ reduced weed measurement traits better than ‘Uso 31’. Density and biomass of nitrophilous weeds increased with the higher N dose compared to control (up to 56% and 79% respectively), therefore negatively affecting the growth of the hemp plants. Further research is needed in order to identify useful information on interactions between weeds and hemp crop to address potential yield losses under different weed management systems.

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Section: Methodsmentioning

confidence: 99%

Effect of Fertilization and Weed Management on Weed Flora of Hemp Crop

et al. 2020

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“…Características como eficiência operacional em grandes áreas, possibilidade de uso sobre períodos chuvosos, quando outros métodos são ineficazes e alta eficiência de controle são as principais características que impulsionam o uso de herbicidas (SILVA et al, 2007;FREITAS et al, 2014). Contudo, nos EUA não há herbicidas registrados para uso na cultura do cânhamo (SANDLER et al, 2019 O cânhamo mostra elevados níveis de sensibilidade às aplicações de herbicidas.…”

Section: Controle Químicounclassified

“…Diante das pesquisas, é possível que o uso de herbicidas raramente seja mencionado no manejo de plantas daninhas na cultura do cânhamo, pois o uso desses, podem interferir na qualidade do cânhamo, devido a sensibilidade da cultura (MAXWELL, 2016). Na ausência de pesquisas sobre rendimento do cânhamo em relação as plantas daninhas, mais estudos de seletividade são necessários, principalmente com expansão do cultivo da cultura (SANDLER et al, 2019).…”

Section: Controle Químicounclassified

Sistema Agroflorestal Semente Viva: Iniciativa Estudantil Na Construção De Um Sistema De Cultivo Agroecológico

Tebar

2021

Engenharia Agronômica: Ambientes Agrícolas E Seus Campos De Atuação

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Direitos para esta edição cedidos à Atena Editora pelos autores. Todo o conteúdo deste livro está licenciado sob uma Licença de Atribuição Creative Commons. Atribuição-Não-Comercial-NãoDerivativos 4.0 Internacional (CC BY-NC-ND 4.0).O conteúdo dos artigos e seus dados em sua forma, correção e confiabilidade são de responsabilidade exclusiva dos autores, inclusive não representam necessariamente a posição oficial da Atena Editora. Permitido o download da obra e o compartilhamento desde que sejam atribuídos créditos aos autores, mas sem a possibilidade de alterá-la de nenhuma forma ou utilizá-la para fins comerciais. Todos os manuscritos foram previamente submetidos à avaliação cega pelos pares, membros do Conselho Editorial desta Editora, tendo sido aprovados para a publicação com base em critérios de neutralidade e imparcialidade acadêmica.A Atena Editora é comprometida em garantir a integridade editorial em todas as etapas do processo de publicação, evitando plágio, dados ou resultados fraudulentos e impedindo que interesses financeiros comprometam os padrões éticos da publicação. Situações suspeitas de má conduta científica serão investigadas sob o mais alto padrão de rigor acadêmico e ético.

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“…However, hemp is a minor global crop in term of fiber production, with approximately 91,055 hectares (ha) planted in 2016. However, the value of hemp market was estimated to be very high, at $3.9 billion in 2017 and the hemp seed segment is predicted to grow at a compound annual growth rate of 17.1% through at least 2025 [17]. Similarly, the strength of flax fiber of the bast fiber category is twice that of cotton fiber and five times that of wool fiber.…”

Section: Fiber Cropsmentioning

confidence: 99%

Molecular Diagnostics and Detection of Oomycetes on Fiber Crops

Wang

Gao

Cheng

et al. 2020

Plants

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Fiber crops are an important group of economic plants. Traditionally cultivated for fiber, fiber crops have also become sources of other materials such as food, animal feed, cosmetics and medicine. Asia and America are the two main production areas of fiber crops in the world. However, oomycete diseases have become an important factor limiting their yield and quality, causing devastating consequences for the production of fiber crops in many regions. To effectively control oomycete pathogens and reduce their negative impacts on these crops, it is very important to have fast and accurate detection systems, especially in the early stages of infection. With the rapid development of molecular biology, the diagnosis of plant pathogens has progressed from relying on traditional morphological features to the increasing use of molecular methods. The objective of this paper was to review the current status of research on molecular diagnosis of oomycete pathogens on fiber crops. Our search of PubMed identified nearly 30 species or subspecies of oomycetes on fiber crops, among which the top three species were Phytophthora boehmeriae, Phytophthora nicotianae and Pythium ultimum. The gene regions that have been used for molecular identifications of these pathogens include the internal transcribed spacer (ITS) regions of the nuclear ribosomal RNA gene cluster, and genes coding for translation elongation factor 1α (EF-1α) and mitochondrial cytochrome c oxidase subunits I and II (Cox 1, Cox 2), etc. We summarize the molecular assays that have been used to identify these pathogens and discuss potential areas of future development for fast, specific, and accurate diagnosis of oomycetes on fiber crops.

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A call for weed research in industrial hemp (Cannabis sativa L)

Cited by 30 publications

References 22 publications

Effect of Fertilization and Weed Management on Weed Flora of Hemp Crop

Effect of Fertilization and Weed Management on Weed Flora of Hemp Crop

Sistema Agroflorestal Semente Viva: Iniciativa Estudantil Na Construção De Um Sistema De Cultivo Agroecológico

Molecular Diagnostics and Detection of Oomycetes on Fiber Crops

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