Studies in Ophrys Pollination PDF Download
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Author: Bertil Kullenberg
Publisher:
ISBN:
Category : Fertilization of plants
Languages : en
Pages : 432
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Book Description
Author: Bertil Kullenberg
Publisher:
ISBN:
Category : Fertilization of plants
Languages : en
Pages : 432
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 340
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Book Description
Author: Bertil Kullenberg
Publisher:
ISBN:
Category :
Languages : en
Pages : 340
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Book Description
Author: Anna-Karin Borg-Karlson
Publisher:
ISBN:
Category : Ophrys
Languages : en
Pages : 47
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Author: Johan Fredrik Münster KULLENBERG
Publisher:
ISBN:
Category :
Languages : en
Pages : 340
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Book Description
Author: K.G. Mukerji
Publisher: Springer Science & Business Media
ISBN: 1461542650
Category : Science
Languages : en
Pages : 339
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Book Description
`The fundamental problem the world faces today, is the rapidly increasing pressure of population on the limited resources of the land. To meet the ever increasing demands of expanding populations, agricultural production has been raised through the abundant use of inorganic fertilizers, the adoption of multicropping systems and liberal application of chemical pesticides (fungicides, bactericides, etc. ). Though the use of chemicals has increased the yield dramatically, it has also resulted in the rapid deterioration of land and water resources apart from wastage of scarce resources. This has adversely affected the biological balance and lead to the presence of toxic residues in food, soil and water in addition to imposing economic constraints on developing countries.' (From the Preface) Mycorrhizal Biology addresses the global problem of land degradation and the associated loss of soil productivity and decline in soil quality caused by exploitative farming practices and poor management in developing countries, and the far reaching socio-economic and ecological consequences of its impact on agricultural productivity and the environment. In the light of a need for sustainable development, a new system of productive agriculture, to ensure the efficient management of agricultural inputs for long term high crop productivity with minimum damage to the ecological and socio-economic environment is essential. The management of mycorrhizal fungi will form a significant part of such a system and this work investigates the key association of plant roots with mycorrhizal fungi, known to benefit plants under conditions of nutritional and water stress and pathogen challenge and analyses the developments in our understanding of the genetic loci that govern mycorrhiza formation.
Author: Steven D. Johnson
Publisher: Oxford University Press
ISBN: 0198732694
Category : Nature
Languages : en
Pages : 197
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Book Description
Thie is the first definitive book on floral mimicry, providing a wider treatise on floral adaptation and plant evolution.
Author: Masters John Godfery
Publisher:
ISBN:
Category : Ophrys
Languages : en
Pages : 302
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Author: Michael Novacek
Publisher: Farrar, Straus and Giroux
ISBN: 1466821604
Category : Science
Languages : en
Pages : 632
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Book Description
A paleontologist awakens us to the "extinction event" that human activity is bringing about today The natural world as humans have always known it evolved close to 100 million years ago, with the appearance of flowering plants and pollinating insects during the age of the dinosaurs. Its tremendous history is now in danger of profound, catastrophic disruption. In Terra, a brilliant synthesis of evolutionary biology, paleontology, and modern environmental science, Michael Novacek shows how all three can help us understand and prevent what he (and others) call today's "mass extinction event." Humanity's use of land, our consumption, the pollution we create, and our contributions to global warming are causing this crisis. True, the fossil record of hundreds of millions of years reveals that wild and bounteous nature has always evolved not quietly but thunderously, as species arise, flourish, die off, and are replaced by new species. We learn from paleontology and archaeology that for 50,000 years, human hunting, mining, and agriculture have changed many localities, sometimes irrevocably. But today, Novacek insists, our behavior endangers the entire global ecosystem. And if we disregard—through ignorance, antipathy, or apathy—the theory of evolution that developed with our modern understanding of the Earth's past, we not only impede enlightenment but threaten any practical strategy for our own survival. The evolutionary future of the entire living planet depends on our understanding this.
Author: Charles Darwin
Publisher:
ISBN:
Category : Fertilization of plants
Languages : en
Pages : 336
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Book Description
