Results 171 to 180 of about 101,553 (200)
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Weed species and weed communities
Vegetatio, 1978One 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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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.
Neeraj Kumar Dubey, Radi Aly
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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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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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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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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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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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Weeds and Weed Management in Upland Rice
1986Publisher Summary This chapter develops weed control research programs for upland rice to look for herbicides that are efficient and safe and that can be integrated with existing control methods. Upland rice is grown under a wide range of management intensities, varying from shifting cultivation—as in Malaysia—to highly mechanized systems, as in ...
S. Sankaran, S. K. De Datta
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Weed biology: importance to weed management
Weed Science, 1997Knowledge of weed biology is essential for development of both economically and environmentally acceptable weed management systems. Weed biology relates to plant attributes such as morphology, seed dormancy and germination, physiology of growth, competitive ability, and reproductive biology.
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The English Journal, 1981
It was the end of another long teaching year-the last two weeks. Those weeks when I usually budget out my time and my money to see myself through another summer. I was groping for a plan, a practical, logical listing of things to do and of things not to do-sort of preparing a face to meet the faces I meet.
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It was the end of another long teaching year-the last two weeks. Those weeks when I usually budget out my time and my money to see myself through another summer. I was groping for a plan, a practical, logical listing of things to do and of things not to do-sort of preparing a face to meet the faces I meet.
openaire +1 more source