Tiwari archana (193 resultados)

Condición: New.

Paperback. Condición: As New. Reprint. Contents Foreword. Preface. 1. Multidisciplinary nature of environmental studies. 2. Natural resources. 3. The Ecosystems. 4. Biodiversity and its conservation. 5. Environmental pollution. 6. Social issues and environment. 7. Human population and the environment. Glossary. Exercises. Index. Environmental Studies is a vast and rapidly growing subject with increasing relevance for sustainable development. It is the systematic study of environment with our proper place and role in it. Realizing the importance of imparting environmental education the Supreme Court directed that a basic course on environment be introduced as a compulsory subject at all levels of education. Environmental Studies deals with the various facets and dimensions of environment in an integrated multidisciplinary and holistic manner. It provides an up to date introductory view of essential topics in environmental studies to help students understand and retain the general principles. It is written with the understanding that even non science students should be able to use it. At the same time it has enough depth to make it suitable as a textbook for students of different courses. 272 pp.…

Soft cover. Condición: New. ISBN:9788172739393 N.A.

Soft cover. Condición: New. ISBN:9788172738761 N.A.

Condición: New. pp. xi + 243 Figures.

N.A. Condición: New. ISBN:9788188237821.

Condición: New. pp. xi + 243.

Condición: New. pp. xi + 243.

Hardcover. Condición: New. ISBN:9788170359128.

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Hardcover. Condición: New. Plant parasitic nematodes are microscopic invertebrate fauna often called as eelworms or roundworms or thread worms. They are distributed all over the world in diverse appearance of habitat and is found in almost each biological niche which make easy continued existence and survival. They cause stern productivity of economically important plants viz., aromatics, cereals, fibers, fruits, medicinal, pulses, oilseeds and vegetables. Most of them attack roots and other underground plant parts and thus immobilize the infested plant part to supply essential nutrients and water from earth. They either alone or in combination with other pathogens constitute an important constraint to global agricultural production and productivity. There are many kinds of nematodes, commonly they may be either ectoparasitic, semi-endoparasitic, sedentary or migratory endoparasitic associations. In agricultural systems, beneficial nematodes are able to enhance nutrient mineralization. Nematode management could be feasibly adopted through integrated practices or either of the cultural, physical, biological, plant resistance and chemical approaches. Keeping all this in view it was felt necessary to write a book on Plant Parasitic Nematodes its importance and Management which can help students, researchers and farmers to know on the subject of nematodes, how they look, the way they damage, associate either shorter or longer durations during their life span , management approach , precautions as biosafety aspects, effect of climate on nematode population and finally how the Farmer s income can be doubled by adopting various methods of their control even under Poly-house cultivations which is the urgent demand of the day. The book constituting 11 chapters covering important aspects of its importance and management tactics.…

Hardcover. Condición: New. Estado de la sobrecubierta: New. 1st Edition. This book gives a view about the extraordinary features and enormous potentials of Cyanobacteria. They are excellent sources of biofuels- ranging from hydrogen to lipids. The antioxidative system is well developed to protect the damaging impact of free radicles. The antioxidatives enzymes of cyanobacteria- SOD, Catalase, Ascorbate Peroxidase etc. can be utilised for commercial purposes.Antioxidative therapy is the new avenue in medical science.The photosynthetic pigments- phycocyanin and phycoerythrin have great therapeutic value. The antimicrobial efficacy of cyanobacteria is quite wide. They are great reservoirs of diverse varieties of secondary metabolites. Antibacterial and antifungal capabilities are well reported and still in research. The toxins secreted by cyanobacteria are diverse in nature ranging from hepatotoxins to lipopolysaccharides. The mode of action of toxins and the effect of these toxins is alarming, round the globe. These wonderful tiny factories need further exploration, so that their properties can be fully utilised. This book summarises various aspects of these wonderful microbes, and can be useful to graduate and post graduate students, researchers and academicians.…

Condición: New.

Condición: New.

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Hardcover. Condición: New. Contents: Preface. 1. Introduction. 2. Occurrence and distribution. 3. Diversity of fungus. 4. Phylogeny. 5. Isolation, purification, preservation and maintenance of fungus. 6. Growth and morphogenesis of fungus. 7. Identification of fungus by morphological attributes. 8. Identification of fungus by molecular attributes. 9. Taxonomy and genetics. 10. Ecology. 11. Mechanism of induced resistant against pathogens. 12. Modes of action. 13. Competition for nutrients or space. 14. Mass production of fungus. 15. Use of Trichoderma in agriculture, health and industry. 16. Role of Trichoderma in controlling plant-parasitic nematodes. 17. Bioremediation. Bibliography. Subject index. Authors index. Nowadays, pests, diseases and chemical pollution in the agriculture field are today's serious threat affecting crop productivity and soil health. The microorganisms reported have shown a significant effect on soil health and crop performance. Plant parasitic nematodes represent a major threat to the agricultural production of different crops worldwide. Due to the high toxicity of chemical nematicides, it is necessary to develop new control strategies against nematodes. In this respect Filamentous fungi can ben an interesting biocontrol agent and are able to reduce the damage caused by plant parasitic nematodes directly by parasitism, antibiosis paralysis and by production of lytic enzymes. However, the use of Trichoderma sp. in the crop field is reported to have a significant effect on yield and maintaining soil micro floral population. Trichoderma is a genus of fungus belongs to family Hypocreaceae and comprises more than 100 species. The use of Trichoderma tends to be beneficial as it is reported to reduce fertilizer dose, pesticide ration in the crop field and enhances yield. Bioremediation and phytoremediation in association with microbes are innovative technologies having the potential to alleviate various soil pollution problems. It is widely used as a bio-fertilizer for almost all crops with or without amendments. However, a positive response was recorded from crops like groundnut, cotton, wheat, tobacco, Bengal gram, brinjal, sugarcane, eggplant, red gram, banana, tomato, sugarbeet, chilies, potato, soybean, citrus, cauliflower, onion, peas, tomato and sunflower. Its antagonistic feature with plant pathogenic micro-organisms makes it more reliable for use in the agriculture field. It is a good fungus for use in INM approach along with organic amendment and judicious use of nematicide for controlling plant parasitic nematodes. …

Paperback. Condición: Fair. No Jacket. Readable copy. Pages may have considerable notes/highlighting. ~ ThriftBooks: Read More, Spend Less.

Paperback. Condición: Very Good. No Jacket. May have limited writing in cover pages. Pages are unmarked. ~ ThriftBooks: Read More, Spend Less.

Condición: New.

Hardcover. Condición: New. ISBN:9788170196914.

Hardcover. Condición: New. ISBN:9788170196853.

Condición: New. Print on Demand.

Condición: New. pp. 72.

Condición: New. PRINT ON DEMAND.

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Condición: New. pp. 88.

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Condición: New. pp. 116.

Taschenbuch. Condición: Neu. Toxins of cyanobacteria | The nature and impact of cyanobacterial toxins | Archana Tiwari | Taschenbuch | 68 S. | Englisch | 2010 | LAP LAMBERT Academic Publishing | EAN 9783843368780 | Verantwortliche Person für die EU: preigu GmbH & Co. KG, Lengericher Landstr. 19, 49078 Osnabrück, mail[at]preigu[dot]de | Anbieter: preigu. …