Results 341 to 350 of about 15,278,418 (385)
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Robotic weeders can improve weed control options for specialty crops.
Pest Management Science, 2019Specialty crop herbicides are not a priority for the agrochemical industry, and many of these crops do not have access to effective herbicides. High-value fruit and vegetable crops represent small markets and high potential liability in the case of ...
S. Fennimore, Matthew A. Cutulle
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Weed Invasions: To Control or Not to Control? [PDF]
Research Papers in Economics, 2004 When a weed invasion is discovered a decision has to be made as to whether to attempt to eradicate it, contain it or do nothing. Ideally, these decisions should be based on a complete benefit-cost analysis, but this is often not possible. A partial analysis, combining knowledge of the rate of spread, seedbank longevity and economic-analysis techniques,
Cacho, Oscar J. +7 more
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1993
Weeds have been a major problem in sugar beet since the crop was first grown in the late 1700s. At the end of the eighteenth century, Achard (1799) was already stressing the need to control weeds before the crop was sown. He also noted that once sugar beet was clear of competition from early-emerging weeds it would grow vigorously and smother weeds ...
Robert G. Wilson, M. J. May
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Weeds have been a major problem in sugar beet since the crop was first grown in the late 1700s. At the end of the eighteenth century, Achard (1799) was already stressing the need to control weeds before the crop was sown. He also noted that once sugar beet was clear of competition from early-emerging weeds it would grow vigorously and smother weeds ...
Robert G. Wilson, M. J. May
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Are herbicides a once in a century method of weed control?
Pest Management Science, 2017The efficacy of any pesticide is an exhaustible resource that can be depleted over time. For decades, the dominant paradigm - that weed mobility is low relative to insect pests and pathogens, that there is an ample stream of new weed control technologies
A. Davis, G. Frisvold
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Weeds and Weed Control in Coffee
Experimental Agriculture, 1994SUMMARYThe effects of weeds on coffee productivity and the methods used for their control are discussed. The more common weeds are listed, together with the control methods that can be used at various phases of coffee production.Malezas y control de las mismas en el ...
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Annual Review of Entomology, 1998
▪ Abstract Classical biological control, i.e. the introduction and release of exotic insects, mites, or pathogens to give permanent control, is the predominant method in weed biocontrol. Inundative releases of predators and integrated pest management are less widely used.
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▪ Abstract Classical biological control, i.e. the introduction and release of exotic insects, mites, or pathogens to give permanent control, is the predominant method in weed biocontrol. Inundative releases of predators and integrated pest management are less widely used.
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Real-time variable-rate herbicide application for weed control in carrots
, 2016Summary A camera sensor for precision weed control in arable fields has been developed at the Leibniz Institute for Agricultural Engineering. For herbicide spraying in carrots, the sensor was positioned at the front three-point linkage of a tractor ...
K. Dammer
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, 2016
Thank you for reading weed control as a science. As you may know, people have look numerous times for their favorite books like this weed control as a science, but end up in harmful downloads.
D. Herrmann
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Thank you for reading weed control as a science. As you may know, people have look numerous times for their favorite books like this weed control as a science, but end up in harmful downloads.
D. Herrmann
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2009
The aim of this chapter is to highlight and focus on novel and promising developments in soil-engaging intra-row hoeing. Conventional weeding tools for intra-row treatments based on selectivity are limited in control efficacy. Four intra-row weeders based on computer-controlled soil-engaging tools are described. They all rely on input information about
Griepentrog, Hans W. +1 more
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The aim of this chapter is to highlight and focus on novel and promising developments in soil-engaging intra-row hoeing. Conventional weeding tools for intra-row treatments based on selectivity are limited in control efficacy. Four intra-row weeders based on computer-controlled soil-engaging tools are described. They all rely on input information about
Griepentrog, Hans W. +1 more
openaire +3 more sources
Suicidal germination for parasitic weed control.
Pest Management Science, 2015Parasitic weeds of the genera Striga and Orobanche spp. cause severe yield losses in agriculture, especially in developing countries and the Mediterranean. Seeds of these weeds germinate by a chemical signal exuded by the roots of host plants.
B. Zwanenburg, A. Mwakaboko, C. Kannan
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