Hansjoerg Kraehmer Atlas of Weed Mapping

Hansjoerg Kraehmer Atlas of Weed Mapping

Weeds are variously defined as plants growing where they are not wanted, plants that interfere with human activity. Weeds affect everyone in the world by reducing crop yield and quality, delaying or interfering with harvesting, interfering with animal feeding, reducing animal health, preventing water flow, as plant parasites, etc. It is estimated that those problems cause $ billions worth of crop losses annually and the global cost of controlling weeds also runs into many $ billions every year. Atlas of Weed Mapping presents an introductory overview on the occurrence of the most common weeds of the world. The book notably includes: Description of cropping practices and explanations for the global distribution of weeds Invasive plant mapping Aquatics and wetland plants with histological plant details Theoretical and practical aspects of weed mapping Aspects on the documentation of herbicide resistance Biodiversity, rare weeds and the dominance of the most common weeds Fully illustrated with more than 800 coloured figures and a number of tables, this new characterisation of anthropogenic vegetation will be interesting for readers of a great number of disciplines such as agriculture, botany, ecology, geobotany and plant community research. More than a hundred experts have contributed data to this unique compilation.

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Weed Flora in the Rift Valley Sugarcane Plantations of Ethiopia

Weed Flora in the Rift Valley Sugarcane Plantations of Ethiopia

Weeds are constant component of agro-ecosystem and alternative control methods have been used to control them in sugarcane. However, to design effective weed control measures, identification, characterization and quantification of weed species in a certain area are important steps. Information on weed density, distribution and species composition help to predict yield losses. The present finding determines the prevalence and distribution of weeds; assess the influence of some environmental and crop management practices on weed species composition and distribution; and evaluate the shift in weed flora during the past 13 years in the sugarcane plantations of Ethiopia (Wonji-Shoa and Metahara). Such information would enable the sugarcane plantations of Ethiopia to decide whether it is economical to control a specific weed problem and evaluate the existing weed management practices.

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Essential Atlas of the World

Essential Atlas of the World

Visit the world's continents, regions and countries through the latest digital mapping with the latest edition of this quick reference atlas. Explore data profiles of each country, detailed fact files, over 90 maps, key statistics and time zones from across the globe, plus a full index with over 20,000 entries. A glossary of geographical terms makes this an essential reference for business, home or school.

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Assessment of the distribution and importance of weeds

Assessment of the distribution and importance of weeds

The weed distributions studies will help researchers to devise site specific weed control technologies and serve as bases for further studies on weed flora shift in the future.The research findings of the assessments of the above ground weed species distribution in the fields of wheat in the three districts indicated that as a total of 42 weed species were occurred. The largest number of weed species comprised broad leaved weeds species followed by grass and sedges, and there were more annual than perennial weeds were found in fields of wheat.The Reserch suggested the problem must be addressed by all the concerned bodies to control these weeds by adapting appropriate measures including cultural, physical, biological and herbicidal methods that to enhance wheat production and ensure food security.

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The Times Universal Atlas of the World

The Times Universal Atlas of the World

The authority and accuracy of a top range Times World Atlas at an affordable price. Fully updated with extra information next to each map, making this a perfect reference tool for exploring the world. The latest mapping provides an amazingly detailed view of the world with extensive geographical information beside each map, giving the reader a greater understanding of each area. FULLY UP-TO-DATE MAPPING The reference mapping, produced in the beautifully clear and distinctive Times style has been completely updated with thousands of changes reflecting recent geopolitical and geographical change around the world. As with all atlases in the Times range it offers great authority, outstanding quality and attention to detail. MAIN FEATURES • A fascinating collection of maps from the last 150 years of world atlases included in an expanded historical mapping section. • Satellite image shown for each continent along with textual description. • The latest satellite images from around the world showcased in the imagery section. • Geographical reference section with flags, statistics and facts for all the world’s countries. • Over 50,000 index entries. "The definitive guide book to the world. It makes your mind run wild and your feet itch." Jake Meyer

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Principles, Techniques and Challenges of School Mapping

Principles, Techniques and Challenges of School Mapping

The book ‘Principles, techniques and challenges of school mapping' will serve as guide for education planners, policy makers, those involved in school mapping, as well as government. It can also be used by education students in tertiary institutions of learning. It is divided into six chapters. The first chapter discusses the nature, scope and purposes of school mapping. The second chapter describes the concept of diagnosis as applicable to school mapping while the third is on the application of statistics in school mapping. The fourth is on projections in school mapping. The fifth chapter discuses the challenges of school mapping while the sixth contain questions on the topic for revision by the readers. It is a book that needs to be read to know its worth.

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Weed Management in Summer Greengram (Vigna radiata L.)

Weed Management in Summer Greengram (Vigna radiata L.)

Pulses are considered as an important part of food crops occupying a unique position in agriculture. In the country like India, where people are predominantly vegetarians, pulses are main source of protein and thus gain vital importance in daily diet. Greengram is one of the major pulse crops in India which is cultivated in arid and semi-arid region. Weed problem is one of the major barriers responsible for low productivity of greengram because, weed competes with the crop for moisture, nutrients, space, light etc. Moreover they increase production cost, harbors insects and plant diseases organisms, decrease quality of farm produce and reduce values of the land and farm produce. Herbicides used alone or in combination with other weed control techniques reduce weed crop competition and the risk of weed growing unchecked in period of adverse weather or soil condition that would hinder the use of more traditional means of weed control. Owing to little work done particularly on weed management in summer greengram, the present experiment was conducted.

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Advances in QTL Analysis

Advances in QTL Analysis

The book elucidates various statistical models and methods used for the analysis of QTL with illustrated examples, application of QTL in modern plant breeding, development of mapping population for QTL analysis, QTL mapping and brief overview of mapping population.

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Collins School Atlas

Collins School Atlas

An introductory atlas for secondary schools, perfectly designed to support and motivate Key Stage 3 students in geographical and mapping skills. This secondary school atlas for students aged 11-14 is designed to help develop map, atlas and data handling skills. The content adheres closely to the requirements of the National Curriculum and incorporates results of classroom testing. Its clear and accessible layout will motivate pupils of all abilities at Key Stage 3 and S1-S2. An easy-to-follow introductory 'map and atlas skills' section, useful for both teacher and pupil, is followed by clear, accessible reference maps presented with locator maps, fact boxes and flags, descriptive text, detailed map keys and photos. Carefully selected focus country studies include mapping on contrasting regions and special topics. Regions included in this edition include Russia and the Middle East. The latest available country-by-country statistics are listed in a separate section and the index includes full latitude and longitude values. The world section covers all the global issues required by the National Curriculum e.g. climate change, population, biomes, earthquakes and volcanoes.

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