Fundamentals of Weed ScienceElsevier, 6 sept. 2007 - 688 pagini This book addresses herbicides and their use as an important aspect of modern weed management, and strives to place them in an ecological framework. Many weed scientists believe agriculture is a continuing struggle with weeds - without good weed control, good and profitable agriculture is impossible. Each agricultural discipline sees itself as central to agriculture's success and continued progress, and weed science is no exception. While not denying the importance of weed management to successful agriculture, this book places it in a larger ecological context. The roles of culture, economics, and politics in weed management are also discussed, enabling scientists and students to understand the larger effects on society. NEW TO THIS EDITION:
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Cuprins
| 1 | |
| 15 | |
| 43 | |
| 59 | |
| 79 | |
Weed Ecology | 123 |
Invasive Plants | 187 |
Allelopathy | 227 |
Herbicides and Plants | 437 |
Herbicides and Soil | 469 |
Herbicide Formulation | 489 |
Herbicides and the Environment | 501 |
Pesticide Legislation and Registration | 537 |
Weed Management Systems | 553 |
Weed ScienceThe Future | 599 |
List of Crop and Other Plants Cited in Text | 629 |
The Significance of Plant Competition | 247 |
Methods of Weed Management and Control | 259 |
Biological Weed Control | 327 |
Introduction to Chemical Weed Control | 357 |
Properties and Uses of Herbicides | 395 |
List of Weeds Cited in Text | 635 |
GLOSSARY OF TERMS USED IN WEED SCIENCE | 647 |
INDEX | 655 |
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Termeni și expresii frecvente
acid action activity agricultural annual application areas become biological control Canada cause Chapter chemical combined common competition complete continuous corn cost create crop cultivation density determine early ecological economic effects emergence energy environment environmental et al example farmers fertilizer field formulation germination grain grasses grow growth herbicides human important increased insects integrated interactions invaders invasive land leaves less light loss major mechanism methods million models native natural occur organic perennial pesticide pests plants population possible potential practices Press prevent problems production reason reduced residues resistance rice roots scientists selective showed soil soybean species spray successful surface Table techniques things thistle tillage tion tolerance understand United usually vegetation weed control weed management weed management systems Weed Sci weed science weed seed wild yield
Pasaje populare
Pagina 3 - Great fleas have little fleas upon their backs to bite 'em, | And little fleas have lesser fleas, and so ad infinitum.
Pagina 358 - ... there is no place for industry, because the fruit thereof is uncertain, and consequently no culture of the earth, no navigation nor use of the commodities that may be imported by sea, no commodious building, no instruments of moving and removing such things as require much force, no knowledge of the face of the earth; no account of time, no arts, no letters, no society, and, which is worst of all, continual fear and danger of violent death, and the life of man solitary, poor, nasty, brutish,...
Pagina 4 - Another parable put he forth unto them, saying, The kingdom of heaven is likened unto a man which sowed good seed in his field: But while men slept, his enemy came and sowed tares among the wheat, and went his way.
Pagina 5 - BOWED by the weight of centuries he leans Upon his hoe and gazes on the ground, The emptiness of ages in his face, And on his back the burden of the world. Who made him dead to rapture and despair, A thing that grieves not and that never hopes, Stolid and stunned, a brother to the ox? Who loosened and let down this brutal jaw? Whose was the hand that slanted back this brow? Whose breath blew out the light within this brain?
Pagina 541 - Economic poison" means (1) any substance or mixture of substances intended for preventing, destroying, repelling, or mitigating any insects, rodents, nematodes, fungi, weeds, and other forms of plant or animal life or viruses, except viruses on or in living man or other animals, which the Secretary of Agriculture shall declare to be a pest, and (2) any substance or mixture of substances Intended for use as a plant regulator, defoliant or desiccant.
Pagina 4 - Bowed by the weight of centuries he leans Upon his hoe and gazes on the ground, The emptiness of ages in his face, And on his back the burden of the world.
Pagina 4 - Thou shalt not eat of it: cursed is the ground for thy sake; in sorrow shalt thou eat of it all the days of thy life; thorns also and thistles shall it bring forth to thee; and thou shalt eat the herb of the field...
Pagina 147 - Adam he said, because thou hast hearkened unto the voice of thy wife, and hast eaten of the tree, of which I commanded thee, saying, thou shalt not eat of it: cursed is the ground for thy sake; in sorrow shalt thou eat of it all the days of thy life; Thorns and thistles shall it bring forth to thee...
Pagina 3 - So, nat'ralists observe, a flea Hath smaller fleas that on him prey, And these have smaller fleas to bite 'em, And so proceed ad infinitum...
Pagina 4 - Beware of false prophets, which come to you in sheep's clothing, but inwardly they are ravening wolves. Ye shall know them by their fruits. Do men gather grapes of thorns, or figs of thistles ? Even so every good tree bringeth forth good fruit ; but a corrupt tree bringeth forth evil fruit.