Results 261 to 270 of about 85,748 (313)
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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 ...
E. E. Schweizer, 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 ...
E. E. Schweizer, M. J. May
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Journal of Documentation, 2021
PurposeThe purpose of this research is to investigate the language of “weeding” (library deselection) within public library collection development policies in order to examine whether such policies and practices can be usefully connected to library and information science (LIS) theory, specifically to “Deweyan pragmatic adaptation” as suggested by ...
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PurposeThe purpose of this research is to investigate the language of “weeding” (library deselection) within public library collection development policies in order to examine whether such policies and practices can be usefully connected to library and information science (LIS) theory, specifically to “Deweyan pragmatic adaptation” as suggested by ...
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Weeds and weed management in carrots: A review.
2002Information about key weeds, new weeds or species that have recently spread, critical period of competition, weed management programmes in Integrated and Organic production, approved herbicides and those currently undergoing registration for use in carrots (Daucus carota L.) grown under field conditions in Croatia (HR), Denmark (DK), Finland (FIN ...
TEI, Francesco +19 more
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Weed Management for Parasitic Weeds
2014Parasitic weeds, representing more than 4,000 species of more than 20 higher plant families, are one of the most destructive and intractable pests to agricultural production in both developed and developing countries. Parasitic weeds cause heavy damage to numerous crops by reducing both crop yield and quality.
Radi Aly, Neeraj Kumar Dubey
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Weed diversity and weed management
Weed Science, 1997The story of agriculture is the story of weed interference. After millennia of weed control we still have weeds. This situation has led many growers to observe that “the weeds always win.” One of the most important reasons weeds are so successful is their biodiversity. Biodiversity is an inevitable consequence of the struggle an individual weed species
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2017
Weeds must be considered in any conceptual framework that seeks to explain, explore and analyse biodiversity if the focus is on human activities and utilisation of natural systems. This chapter concentrates on weeds in annual and perennial crops associated with terrestrial systems used for agricultural purposes: weeds of non-terrestrial or ...
Gerowitt, Bärbel +5 more
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Weeds must be considered in any conceptual framework that seeks to explain, explore and analyse biodiversity if the focus is on human activities and utilisation of natural systems. This chapter concentrates on weeds in annual and perennial crops associated with terrestrial systems used for agricultural purposes: weeds of non-terrestrial or ...
Gerowitt, Bärbel +5 more
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Trends in Biotechnology, 2003
Transgenes promise to reduce insecticide and fungicide use but relatively little has been done to significantly reduce herbicide use through genetic engineering. Recently, three strategies for transgene utilization have been developed that have the potential to change this.
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Transgenes promise to reduce insecticide and fungicide use but relatively little has been done to significantly reduce herbicide use through genetic engineering. Recently, three strategies for transgene utilization have been developed that have the potential to change this.
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2017
Weeds compete with crop plants in several different ways. First there can be interference competition where there is physical exclusion from some aspect of the shared habitat. Second there is exploitation competition, which is indirect, and takes the form of competition for a wide variety of resources such as light, water and nutrients.
Bastiaans, L., Kropff, M.J.
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Weeds compete with crop plants in several different ways. First there can be interference competition where there is physical exclusion from some aspect of the shared habitat. Second there is exploitation competition, which is indirect, and takes the form of competition for a wide variety of resources such as light, water and nutrients.
Bastiaans, L., Kropff, M.J.
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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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Weeds in action: Vegetal political ecology of unwanted plants
Progress in Human Geography, 2022Lucia Arguelles, Hug March
exaly