Results 251 to 260 of about 171,730 (308)

Weed species and weed communities

Vegetatio, 1978
One of the most satisfying experiences of phytosociological work is the moment when out of the mass of amorphous data begins to crystallize a lattice of general principles and an understanding of vegetation and its ecology. But if one works still further and gathers more and more knowledge in one and the same field, one reaches a deeper level. The more
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Weeds and weed control

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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The pragmatics of weeding

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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Weeds and weed management in carrots: A review.

2002
Information 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, Baumann D. T., Bleeker P., Dobrzanski A., Economou G., Fogelberg F., Froud Williams R. J., Hoek H., Melander B., Rocha F., Ruuttunen P., Rzozi S. B., Sanseovic T., Simoncic A., Torma M., Uygur N., Van der Weide R., Verschwele A., Villeneuve F., Zaragoza C.   +19 more
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Weed diversity and weed management

Weed Science, 1997
The 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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Weed Management for Parasitic Weeds

2014
Parasitic 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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Weeds and Weed Management in Cabbages. A Review

2005
Published
TEI, Francesco, PANNACCI, Euro, Cirujeda A., Dobrzanski A., Froud Williams R. J., Rocha F., Ruuttunen P., Sanseovic T., Simoncic A., Torma M., Van Der Weide R., Verschwele A., Zaragoza C., Neuweiler R.   +13 more
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Weeds and Biodiversity

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, Barberi, Paolo, Darmency, Henri, Petit, Sandrine, Storkey, Jonathan, Westerman, Paula   +5 more
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Weeds and weed management in lettuce

2019
Published
Tei, F., Cirujeda Ranzenberger, Alicia, Dobrzanski, Adam, Froud Williams, R.J., Mennan, H., Neuweiler, R., Pannacci, E., Qasem, J., Rocha, Fatima, Simoncic, A., Verschwele, Arnd, Van der Weide, R., Zaragoza Larios, Carlos   +12 more
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