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Books > Earth & environment > Earth sciences
The chapters of the book have been selected and arranged in such a
manner as to lead the students through the entire gamut of rainfed
agriculture supported by suitable examples and diagrams. The topics
covered are most relevant in view of growing interests in rainfed
agriculture technologies. The focus is on new concept and
approaches in dryland and rainfed lands; rainfed
farming-introduction, characteristics, distribution and problems;
efficient management of rainfed crops; water harvesting and
moisture conservation; study of mulches and antitranspirants;
principles of intercropping; concept of watershed resource
management; drought and its management; soil erosion-definition,
nature and extent of erosion; stress physiology; scope of
agro-horticultural, agro-forestry and silvi-pasture in dryland
agriculture etc. Rainfed agriculture is practiced in most of the
arid and semiarid areas of India. About 67 % of arable land in
India (143.2 m ha) is rainfed. In terms of production rainfed
agriculture accounts for production of more than 40 per cent of
total food grains, nearly 75 per cent of oilseeds, 90 per cent of
pulses and 70 per cent of cotton. Most of the rainfed lands are
typified by highly fragile natural resource base; the rainfall is
low; soils are often coarse textured, sandy, inherently low in
fertility, organic matter and water holding capacity; and are
easily susceptible to wind and water erosion. Deterioration of
natural resources is the main issue threatening sustainable
development of rainfed agriculture, more so in the Third World
Countries. India will have to produce 300 million tonnes of food
grains to feed 1.5 billion populations (approx.) in the coming
years. This target cannot be realized from irrigated areas alone as
we have irrigation potential for 178 million hectares only.
Therefore, we will have to evolve an appropriate technology for dry
land farming. On the other hand, we can say that second 'Green
Revolution' in Indian agriculture can be in rainfed/dryland
agriculture.
Andean Tectonics addresses the geologic evolution of the Andes
Mountains, the prime global example of subduction-related mountain
building. The Andes Mountains form one of the most extensive
orogenic belts on Earth, spanning approximately an 8,000-km
distance along the western edge of South America, from ~10 DegreesN
to ~55 DegreesS. The tectonic history of the Andes involves a rich
record of diverse geological processes, including crustal
deformation, magmatism, sedimentary basin evolution, and climatic
interactions. This book addresses the range of Andean tectonic
processes and their temporal and spatial variations. An improved
understanding of these processes is fundamental not only to the
Andes but also to other major orogenic systems associated with
subduction of the oceanic lithosphere. Andean Tectonics is a
critical resource for researchers interested in the causes and
consequences of Andean-type orogenesis and the long-term evolution
of fold-thrust belts, magmatic arcs, and forearc and foreland
basins.
Semi-Lagrangian Advection Methods and Their Applications in
Geoscience provides a much-needed resource on semi-Lagrangian
theory, methods, and applications. Covering a variety of
applications, the book brings together developments of the
semi-Lagrangian in one place and offers a comparison of
semi-Lagrangian methods with Eulerian-based approaches. It also
includes a chapter dedicated to difficulties of dealing with the
adjoint of semi-Lagrangian methods and illustrates the behavior of
different schemes for different applications. This allows for a
better understanding of which schemes are most efficient, stable,
consistent, and likely to introduce the minimum model error into a
given problem. Beneficial for students learning about numerical
approximations to advection, researchers applying these techniques
to geoscientific modeling, and practitioners looking for the best
approach for modeling, Semi-Lagrangian Advection Methods and Their
Applications in Geoscience fills a crucial gap in numerical
modeling and data assimilation in geoscience.
Nutrient use efficiency is a measure of how efficiently plants use
the available mineral nutrients to produce economic produce.
Improving nutrient use efficiency is very much essential under
current scenario besides an understanding of the nutrient dynamics
in soil-plant system."Enhancing nutrient use efficiency: Concepts,
methods, and management interventions" is a comprehensive book
which has a compilation of topics related to enhancement of
nutrient use efficiency of various crops and cropping systems.
Although it depends on the ability to plants to take up the
nutrients from the soil, management practices have a key role to
intervene the use efficiency. This book has 27 chapters written by
eminent researchers in the field and addresses multifaceted
approaches to enhance the nutrient use efficiency. Improving
nutrient use efficiency is a prerequisite to reducing production
costs in the wake of escalating cost of agricultural inputs in
farming besides minimizing environmental contamination. Soil
physical management is the foremost strategy to enhance the
nutrient use efficiency. Hand held devices are popular among the
farmers for nitrogen management in rice in several parts of the
country, besides slow release nitrogenous fertilizers. Experiences
from Long term fertilizer experiments and soil test crop response
correlation are of immense use to understand the nutrient dynamics
in soil and in turn designing practices for higher use efficiency.
Besides describing the concepts and methods of nutrient use
efficiency, management practices for dry land crops and cropping
systems, cereal based cropping systems, rainfed pulses based
cropping systems, soybean based cropping systems, sugarcane based
cropping systems, cotton based cropping systems, tobacoo and oil
seed based cropping systems, rapeseedmustard based cropping systems
and spices based cropping systems are also dealt in this book and
would serve as a resource guide for enhancing nutrient use
efficiency in various crops and cropping systems
This book comprises 31 chapters on advances in soil-plant systems
for improving nutrient use efficiency with four major themes viz.
1. Introduction and Fundamentals of Soil Plant Atmosphere Continuum
and nutrient use efficiency 2. Soil physical, chemical, biological
and agronomic management for improving NUE 3. Plant physiological,
genetic & molecular biological basis for improving nutrient
uptake & use efficiency 4. Climate change aspects related to
soil and plant systems for improving NUE. Besides the book also
include few chapters on analytical techniques and instrumentation
for the study of nutrient use efficiency with respect to
physico-chemical and biological parameters.
The book converted its 23 chapters into four sections. The 1st
Section deals with recent mitigation strategies developed by the
scientists to reduce the effect of climate changes and promote the
Sustainable Agriculture by different ways viz., Role of Marker in
Development of Climate Resilient Varieties. Section 2 deals with
the conservation agriculture and mitigation strategies,
Biofertilizers helps in development of sustainable agricultural
practices. Section 3 deals with impact of climate change on pest
scenario across the crops and has given insight on possible
avoidance of pests. Final sections deals with the agroforestry and
how they can minimise their affect of climate change. Finally
Section 4th deals with Impact of climate change crop and livestock
sectors and strategies for mitigation and adaptation. Role of ICT
and extension agencies on framing policies and effective
dissemination of technologies were discussed.
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Volcanic Unrest
(Hardcover)
Jurgen Neuberg, Bettina Scheu, Joachim Gottsmann
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R1,490
Discovery Miles 14 900
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Ships in 18 - 22 working days
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From ice storms to fire rainbows, this is an A to Z guide to the
earth's spectacular weather phenomena. Each entry has been crafted
by experts at The Royal Meteorological Society, and many are
illustrated with dramatic imagery from their annual Weather
Photographer of the Year competition. As well as providing precise
scientific and geographic detail, the entries often reveal the
folklore that surrounds certain weather events and how they have
affected human culture.
The book has been divided into six chapters. The first chapter
"Introduction to remote sensing" in this chapter we have given
basics knowledge of remote sensing, it include the definition,
history of the satellite systems, electromagnetic spectrum and
resolutions etc. The second chapter of "Aerial Remote Sensing"
deals with elements, interpretation, types of photo and
measurements. The third chapter represents the "Satellite remote
sensing". The fourth chapter analysed "Global Positioning System",
it include the GPS procedure, types and developments. The fifth
chapter is "Introduction to Geographical Information System" and
covered basics information about GIS. The sixth chapter included
applications of remote sensing, geographical information system and
Global positioning systems. This book is very useful to bachelor,
post graduates' degree of geography and research scholars can get
the some ideas and knowledge about the Geospatial Technologies.
This book is prepared with very basic and common information.
Geographic knowledge of these technologies will provide students
with the skills needed to meet the demands of their diverse careers
in the global workplace.
The present book is an attempt to bring all theories of geography
in one book for easy reading of teachers and students. Many
divisions in geography has many theories. Readers should take
effort to collect the theories from all books. All divisions has
certain theories. There are so many theories in physical geography
as well as human geography. A simple idea makes it convenient to
read the theories in one book. First, we selected the certain
theories as follows: Theory of continental drift, The theory of
Isostasy, Von Thunens location theory, Crop combination method, The
central place theory, Internal structure of city, The rank size
rule, The social area analysis method, Losch's theory of economics
of location, Walter Isard's theory, Alfred Weber's theory of least
cost location, Demographic transition theory, Malthusian Theory of
population- Criticism and applicability and Growth pole theory.
Like this, there are 14 theories collected and compiled in this
book as first volume. The theories collected from both physical
geography and human geography. These theories are very important
for those who are preparing for UPSC, should go through the
theories.
Weather and climate play an important role in animal husbandry and
livestock production. While climate determines the adaptability of
a particular animal in a given region, weather determines animal
health and day-to-day performance. Altogether twenty seven chapters
are included in this book, covering basic aspects of atmospheric
phenomena and its applications in the field of animal agriculture.
In nutshell, the textbook revolves around basic concepts of
livestock meteorology, effects of various weather elements and
indices on animal physiology, relevance of modification of
microclimate, livestock advisory based on weather forewarning,
effects of weather and climate on diseases including UV radiation
effects, meteorological instruments, units and computations,
statistical methods in livestock meteorology and climatology of
India. This is unique publication and is of immense use to the
students, faculty members, researchers, scientists and students of
animal husbandry, livestock meteorology, climate science. climate
change and animal agriculture. It will be a reference material to
all those who are interested to understand the impact of weather
and climate on animal husbandry and livestock management. The
Editors' earnest hope is that the textbook will be widely read and
discussed among the scientific community in the field of climate
change and animal agriculture.
Advances in Geophysics, Volume 60, the latest release in this
highly-respected publication in the field of geophysics, contains
new chapters on a variety of topics, including Marchenko imaging,
Fiber-optic sensing and distributed acoustic sensing, Diffractions,
and Time-lapse interferometry across scales.
Due to unprecedented growth in population and the resultant massive
mining of energy resources, especially the non-renewable resources
and also water resources, these resources have gradually become
scarce commodities. Hence the geoscientists and the technocrats
from all over the world have embarked into many fold research
programmes for locating newer reservoirs of these resources and
also to develop models to conserve and sustainably exploit them. As
this involves the total understanding of the rock types, tectonic
architecture, geomorphology and reservoir conditions, the Geomatics
technology comprising Remote Sensing, Geographic Information System
(GIS), etc have been found to be vital tools in the inventory and
management of these resources; While the former due to its
synoptivity, multispectral nature and repeativity and the latter by
virtue of its capability to store, manipulate and model huge volume
of spatial and non-spatial data. Divergent geological provinces and
processes are brought out deserving concepts and methods on
geology, 3D visualization of subsurface lineaments, SRTM based
lineament mapping, spatio-linear modeling of hard rock aquifer
systems, 3D visualization of oil bearing structures, etc., both as
field geologists and as researchers.
This book discusses the fundamental principles of different
branches of geology prescribed in the syllabus, so that the
students acquire basic knowledge of the subject. The book consists
of basic concepts and practical aspects of these subjects as
prescribed syllabus of Civil and Mining Engineering courses in
various Universities and Institutes.
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