scholarly journals Back to the basics: Integrating weed biology into weed management plans

2017 ◽  
Author(s):  
Jared Goplen ◽  
Lisa Behnken ◽  
Ryan Miller ◽  
Liz Stahl
Keyword(s):  
Weed Management ◽  
Weed Biology ◽  
Management Plans

scholarly journals Light, temperature and sowing depth on germination of garden spurge

2021 ◽  
Vol 51 (10) ◽  
Author(s):  
Naira Moreli de Freitas ◽  
Vanessa Francieli Vital Silva ◽  
Celso Augusto Sato Teixeira ◽  
Luiz Augusto Inojosa Ferreira ◽  
Lucas Matheus Padovese ◽  
...  
Keyword(s):  
Weed Management ◽  
Plant Cover ◽  
Continuous Light ◽  
Weed Biology ◽  
Sowing Depth ◽  
Abstract Knowledge ◽  
Seed Placement ◽  
Plant Emergence ◽  
Oat Straw ◽  
Effect Of Light

ABSTRACT: Knowledge on weed biology and ecology is fundamental to provide suitable control practices in weed management systems. The objective of this research was to understand the effect of light and temperature on germination of Chamaesyce hirta, as well as to evaluate the effect of depth of seed placement in the soil in the emergence of the plant. Two experiments were conducted. In the first one, in the laboratory, the seeds were placed to germinate in plastic boxes and kept in a B.O.D. germination chamber, under constant temperatures of 20, 25, 30 and 35 ºC, either in the dark or under continuous light. Daily germination assessments were performed. The percentage of germinated seeds in the 10-day period and the germination speed index (GSI) were calculated. In the second trial, carried out in greenhouse conditions, 100 seeds were planted, under six levels of seeding depth (0, 1, 2, 3, 4 and 5 cm) and three soil cover conditions: no straw, under black oats (Avena strigosa) straw and under corn (Zea mays) straw. Daily plant emergence was counted along 30 days and total emergence and GSI were calculated. Germination of C. hirta seeds occurs both in the presence and absence of light. For the highest temperature, both increased germination and GSI were reported in the presence of light. The highest levels of emergence were obtained with the absence of plant cover and under corn straw at 0 cm depth. The presence of black oat straw on the soil reduced the emergence of C. hirta.

Agricultural Weed Research: A Critique and Two Proposals

Weed Science ◽  
2014 ◽  
Vol 62 (4) ◽  
pp. 672-678 ◽  
Author(s):  
Sarah M. Ward ◽  
Roger D. Cousens ◽  
Muthukumar V. Bagavathiannan ◽  
Jacob N. Barney ◽  
Hugh J. Beckie ◽  
...  
Keyword(s):  
Weed Management ◽  
Invasive Plant ◽  
Science Research ◽  
Weed Biology ◽  
Repeated Calls ◽  
Agricultural Weed ◽  
Working Groups ◽  
Excellent Work ◽  
High Level ◽  
Very High

Two broad aims drive weed science research: improved management and improved understanding of weed biology and ecology. In recent years, agricultural weed research addressing these two aims has effectively split into separate subdisciplines despite repeated calls for greater integration. Although some excellent work is being done, agricultural weed research has developed a very high level of repetitiveness, a preponderance of purely descriptive studies, and has failed to clearly articulate novel hypotheses linked to established bodies of ecological and evolutionary theory. In contrast, invasive plant research attracts a diverse cadre of nonweed scientists using invasions to explore broader and more integrated biological questions grounded in theory. We propose that although studies focused on weed management remain vitally important, agricultural weed research would benefit from deeper theoretical justification, a broader vision, and increased collaboration across diverse disciplines. To initiate change in this direction, we call for more emphasis on interdisciplinary training for weed scientists, and for focused workshops and working groups to develop specific areas of research and promote interactions among weed scientists and with the wider scientific community.

Modeling the Biology of Weeds for Integrated Weed Management

Weed Science ◽  
1982 ◽  
Vol 30 (S1) ◽  
pp. 13-16 ◽  
Author(s):  
Marvin M. Schreiber
Keyword(s):  
Annual Meeting ◽  
Weed Management ◽  
Growth And Development ◽  
Integrated Weed Management ◽  
Steady Increase ◽  
Weed Science ◽  
Weed Biology ◽  
Effect Data ◽  
Weed Growth ◽  
Special Symposium

In a special symposium on weed biology presented at the 1975 annual meeting of the Weed Science Society of America, Parka (37) reviewed the trend of published papers in WEED SCIENCE related to weed biology over the 20-yr period, 1952 to 1972. His data indicated a steady increase from 9.2 to 17.2% of published papers directly related to weed growth and development. My recent assessment of similarly classified papers in 1978, 1979, and 1980 showed a remarkable increase to 21.9, 24.3, and 27.2%, respectively. Further, the more recent papers on weed growth and development also include crop-effect data, i.e., the association of weed growth with crop competition.

scholarly journals Climate Change and the Herbicide Paradigm: Visiting the Future

Agronomy ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1953
Author(s):  
Lewis H. Ziska
Keyword(s):  
Weed Management ◽  
Crop Production ◽  
Historical Context ◽  
Climate Impacts ◽  
Weed Biology ◽  
Evolutionary Selection ◽  
Current Perspective ◽  
Carbon Dioxide Co2 ◽  
Herbicide Use

Weeds are recognized globally as a major constraint to crop production and food security. In recent decades, that constraint has been minimized through the extensive use of herbicides in conjunction with genetically modified resistant crops. However, as is becoming evident, such a stratagem is resulting in evolutionary selection for widespread herbicide resistance and the need for a reformation of current practices regarding weed management. Whereas such a need is recognized within the traditional auspices of weed science, it is also imperative to include emerging evidence that rising levels of carbon dioxide (CO2) and climatic shifts will impose additional selection pressures that will, in turn, affect herbicide efficacy. The goal of the current perspective is to provide historical context of herbicide use, outline the biological basis for CO2/climate impacts on weed biology, and address the need to integrate this information to provide a long-term sustainable paradigm for weed management.

Impact of Weed Control on Weeds: New Problems and Research Needs

1994 ◽  
Vol 8 (2) ◽  
pp. 400-402 ◽  
Author(s):  
Jodie S. Holt
Keyword(s):  
Weed Control ◽  
Weed Management ◽  
Agricultural Practices ◽  
Research Needs ◽  
Weed Biology ◽  
Alternative Strategies ◽  
The Public ◽  
The Future

Concerns in the public and agricultural sectors about the impacts of agricultural practices have led many weed scientists to refocus research efforts toward development of alternative strategies of weed management. To develop methods of weed management that will supplement or replace herbicides, the impacts of agricultural practices on weeds must be better understood. With a foundation of knowledge in basic weed biology, alternatives to herbicides can be made available in the future.

Weed biology serves practical weed management

Weed Research ◽  
2009 ◽  
Vol 49 (1) ◽  
pp. 1-5 ◽  
Author(s):  
R C VAN ACKER
Keyword(s):  
Weed Management ◽  
Weed Biology
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