gupta o p (51 Ergebnisse)

PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000.

Zustand: New. pp. 227.

Zustand: New. pp. xvi + 322.

Zustand: New. pp. 312.

Zustand: New. pp. 164.

PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000.

Zustand: New. pp. 213.

Zustand: New. pp. xiv + 254.

Zustand: New. pp. xv + 322.

Zustand: New. pp. 336.

Zustand: New. pp. 576.

Paperback. Zustand: As New. New. Contents Preface. 1. Holy Vedas. 2. Vedic equality and casteism. 3. Gita and Casteism. 4. Dalit emancipation and inter religion conversions. 5. Intra religion conversions. 6. Gender equality in the Vedas. 7. Sati and widow remarriage. 8. Vedas beef and medical sciences. 9. Myths of Aryan Dravida divide. Appendices 1. Vedic brotherhood. 2. Twelfth World Sanskrit Conference Helsinki. 3. Questions and answers. 4. Further resources. A select bibliography. Index. 326 pp.

Zustand: New. pp. 336.

Soft cover. Zustand: New. Ever since its development as a separate subject during the last over six decades or so, weed science is perhaps one agricultural science that is making advances by leaps and bounds, worldwide. Thousands of research papers are published every year, both in the identification of the new weed problems and finding their feasible solutions. There are several good books on weed management available but what sets this book apart is that it focuses at equipping the students of the first course in weed science, with fundamentals behind each aspect of weeds and weed management in an easy to grasp, text book manner, without missing any quarter of the host of recent developments. This is the key strength of the book. An important feature of advances in weed science is that while, by and large, the older findings remain valid, the new ones act as complements, and not as substitutes to these. Therefore, in this new title of weed science in your hands, care has been taken to maintain the rationality of the basic information on the subject, while incorporating carefully selected, recent research findings. There are sixteen chapters in the book each of which is backed by a set of relevant practical and some mind searching reference questions. In the initial five chapters there is a marked thrust on bringing home to the students the factors that govern the weed occurrence in different crop situations in terms of weed species as well as weed densities. There is emphasis on the insidious nature of weeds and multifarious damages imposed by them on our agricultural and aesthetic environment, and their persistence in nature against all odds. The Chapters 6 to 9 reveal the various options developed by man to deal with weeds in different ecological situations, like the good crop husbandry practices, the use of herbicides and bio-herbicides, the biological control of weeds, and the employment of genetic engineering, allelochemicals, soil solarization, and the like special activities in weed management. These practices, along with the preventive measures, collectively form the subject matter of integrated weed management (IWM) in the book. The strong and weak points of each element of IWM have been highlighted to give students an insight into the subject. The next set of Chapters 10 to 12 are devoted to fundamental functions of more common herbicides available in India, their behaviour in soils and plants, their possible residues in our environment, and the associated effects resulting in the new weed problems. All herbicides have been identified by their common and chemical names. The last set of Chapters 13 to 16 describe in sufficient details the use of herbicides as complements to the other weed control activities in field and vegetable crops, plantations and grasslands, and in the aquatic environment, besides in the treatment of some specific noxious weeds. There is a Glossary of terms often used in the first course of weed science given at the end of the 16 chapters of the book to provide the students a handy, knowledge testing and revision tool. There are nine Appendices in the book which, hopefully, shall complement the text of different chapters. Of these, the Appendix-1 unveils a bonanza of over 60, finely drawn sketches of common weeds selected from the weed flora reported in literature from different parts of India.

Zustand: New. pp. xviii + 380 Figures.

Zustand: New.

Zustand: New. pp. 611 Figures, Illus. (Partly Col.).

Zustand: New. pp. 181.

Hardcover. Zustand: Fine. 270 pp.

Zustand: New. pp. 1140.

Zustand: New. pp. 167.

46 figs. (illustrator). Contents Preface. 1. Aquatic weeds and our concern. 2. The survey of aquatic weed problems. 3. Classification of aquatic weeds. 4. Principles of aquatic weed control. 5. Physical control and utilization f aquatic weeds. 6. Herbicidal control. 7. Biological control. 8. Other methods of control. 9. Weed management in fish ponds and duck marshes. 10. Weed control in irrigation drainage and flood control systems. 11. Special aquatic weeds their control. Selected bibliography. Glossary of terms. The first edition of this book published in 1979 under the name aquatic weeds was a good success but during the last eight years several thousands of new references have been added in literature and it definitely required updating. This second edition is based on relevant literature available upto 1985. Almost all aquatic weeds mentioned in the edition have been sketched and modern plant classification has been followed in describing these weeds. The problems created by aquatic weeds in different situations in the country have been illustrated state wise. Besides a general view of global aquatic weed problems has also been included. Principles and methods of aquatic weed control have been dealt with in five different chapters. The modern research techniques and practical application aspects for each method of control including physical chemical biological and design control have been discussed in adequate details. The appendices include a detailed list of source of latest information on aquatic weeds and a comprehensive glossary of terms used in aquatic weed science besides the several ready reckoners. (jacket) 300 pp.

Zustand: New. pp. 195.

Zustand: New.

Zustand: New. pp. 270 Figures.

Hardbound. Zustand: As New. New. Contents 1. Weeds and our concern. 2. Weed crop competition. 3. Propagation and dispersal of weeds. 4. Weed hardiness and persistence. 5. Classification of weeds and their distribution. 6. Elements of prevention and control of weeds. 7. Cultural and physical methods of weed control. 8. Biological control of weeds. 9. Weed control through herbicides. 10. Herbicide selectivity. 11. Common herbicides and their uses. 12. Fate of herbicides in soils. 13. Herbicide use in field crops and vegetables. 14. Herbicide use in orchards plantations and grasslands. 15. Noxious farm weeds and their control. 16. Aquatic weed management. Glossary of terms often used in weed science. Appendix. Subject index. Ever since its development as a separate subject during the last over six decades or so weed science is perhaps one agricultural science that is making advances by leaps and bounds worldwide. Thousands of research papers are published every year both in the identification of the new weed problems and finding their feasible solutions. There are several good books on weed management available but what sets this book apart is that it focuses at equipping the students of the first course in weed science with fundamentals behind each aspect of weeds and weed management in an easy to grasp text book manner without missing any quarter of the host of recent developments. This is the key strength of the book. An important feature of advances in weed science is that while by and large the older findings remain valid the new ones act as complements and not as substitutes to these. Therefore in this new title of weed science in your hands care has been taken to maintain the rationality of the basic information on the subject while incorporating carefully selected recent research findings. There are sixteen chapters in the book each of which is backed by a set of relevant practicals and some mind searching reference questions. In the initial five chapters there is a marked thrust on bringing home to the students the factors that govern the weed occurrence in different crop situations in terms of weed species as well as weed densities. There is emphasis on the insidious nature of weeds and multifarious damages imposed by them on our agricultural and aesthetic environment and their persistence in nature against all odds. The chapters 6 to 9 reveal the various options developed by man to deal with weeds in different ecological situations like the good crop husbandry practices the use of herbicides and bio herbicides the biological control of weeds and the employment of genetic engineering allelochemicals soil solarization and the like special activities in weed management. These practices along with the preventive measures collectively form the subject matter of Integrated Weed Management (IWM) in the book. The strong and weak points of each element of IWM have been highlighted to give students an insight into the subject. The next set of chapters 10 to 12 are devoted to fundamental functions of more common herbicides available in India their behaviour in soils and plants their possible residues in our environment and the associated effects resulting in the new weed problems. All herbicides have been identified by their common and chemical names. The last set of chapters 13 to 16 describe in sufficient details the use of herbicides as complements to the other weed control activities in field and vegetable crops plantations and grasslands and in the aquatic environment besides in the treatment of some specific noxious weeds. There is glossary or terms often used in the first course of weed science given at the end of the 16 chapters of the book to provide the students a handy knowledge testing and revision tool. There are nine appendices in the book which hopefully shall complement the text of different chapters. Of these the appendix 1 unveils a bonanza of over 60 finely drawn sketches of common weeds selected from the weed flora reported in literature from.

Zustand: New. pp. 97 Figures.

Hardbound. Zustand: As New. Reprint. Contents I. Introduction 1. The need of aquatic plants. 2. Explosion of aquatic plants. 3. Menace of excessive aquatic plants. II. Propagation dispersal and kinds of aquatic plants 1. Propagation and dispersal. 2. Kinds of aquatic plants. III. Common aquatic plants 1. Algae. 2. Ferns. 3. Angiosperms. IV. Survey of problem aquatic plants in India 1. State wise aquatic weed problems. V. Aquatic plant management strategies 1. Identification and assessment of the problem. 2. Control selection. 3. Control implementation. 4. Long term management. 5. Ecological shifts. VI. Physical and utilisation control of excessive aquatic vegetation 1. Physical control. 2. Utilisation control. VII. Herbicidal control of excessive aquatic plants 1. Advantages and limitation of aquatic herbicides. 2. Precautions in the use of herbicides. 3. Common aquatic algicides and herbicides. 4. Localised control of aquatic weeds. 5. Drift control systems. 6. Methods of application of herbicides to waterbodies. 7. Calculating herbicide requirements. 8. Field experimentation with aquatic herbicides. VIII. Biological control of excessive aquatic plants 1. Arthropods. 2. Plant pathogens. 3. Herbivorous fish. 4. Manatee. 5. Other animals. 6. Competitive plants. IX. Aquatic plant management in pisciculture 1. Essentiality of aquatic plants in pisciculture. 2. Damage to pisciculture by overgrowth of plants. 3. Weed control options in fish ponds. 4. Renovation of degraded fish ponds. 5. Direct effects of herbicides on fish. 6. Vegetation management in swamps and marshes. X. Aquatic plant management in irrigation systems 1. Design control devices. 2. Physical control devices. 3. Biological control options. 4. Herbicidal control options. 5. Effect of herbicide residues in irrigation water on crops. 6. Management of ditchbank vegetation. 7. Management of weeds in drainage ditches. XI. Noxious aquatic plants and their control 1. Eichhornia crassipes. 2. Hydrilla verticillata. 3. Ipomoea carnea. 4. Nymphaea and Nelumbo spp. 5. Pistia stratiotes. 6. Potamogeton spp. 7. Salvinia molesta. 8. Typha spp. 9. Vallisneria spiralis. Appendices. Subject index. 273 pp.

Zustand: New. pp. lxxv + 1027.

Zustand: New. pp. 636 Illus.