During the 18th century, the improvement in agricultural techniques led
to higher yields and better food quality: the extension of farmland, the
introduction of new crops and the end of fallowing thanks to crop
rotation. Advances in science and technology, together with a favorable
climate during this period, fostered such changes. A number of theorists
and agronomists introduced new practices, encouraged by the positive
stance taken by the monarchical state. These innovations brought
radical changes to the lives of rural populations and French society in
general.
Agricultural revolution refers to the significant changes in agriculture
when there are inventions, discoveries or new technologies
implemented. These revolutions change the ways of production and
increase the production rate. 
Various agricultural revolutions have occurred in India and have marked
the beginning of a completely new era in the agricultural field. The
agricultural revolutions helped Indian agriculture grow exponentially and
created new opportunities. 
Highlights of Agricultural Revolutions
Black Revolution: To increase petroleum production, the Government
planned to accelerate the production of ethanol and to mix it up with
petrol to produce biodiesel. Ethanol is a renewable source of energy and
is a by-product of sugar production produced from molasses. The
blending of ethanol with petrol has been practiced in the USA and Brazil
for over 70 years. The blending of ethanol with transport fuels would
provide better returns to farmers, supplement scare resources of
hydrocarbons and environment-friendly by reducing pollutants as it helps
combustion.
Pink Revolution: The boom of export and production of meat in India is
the period of the Pink Revolution. It denotes the technological revolution
in the poultry and meat processing sector.  Know more about this
revolution on the page linked.
Grey Revolution: Grey revolution is related to increased fertilizer
production. It is basically associated with the mal effects of the green
revolution of India focusing on what can happen if the new agricultural
equipment turns things wrong. 
White Revolution: Verghese Kurien, the Father of the White Revolution
was a social entrepreneur. His “billion-litre idea”, Operation Flood made

India the world’s largest milk producer and dairy farming India’s largest
self-sustaining industry,
Operation Greens: On the lines of Operation Flood, the Government of
India launched Operation Greens seeking to mirror the success of milk
in the White Revolution for fruits and vegetables of the nation with a
major focus on Tomato, onion and potato – TOP Crops. The scheme
operation Greens was launched in the Union budget 2018-2019.
Yellow Revolution: In the Yellow Revolution, rising from the ‘net
importer’ state, India achieved the status of a self-sufficient and net
exporter. An all-time record of 25 million tonnes of oilseeds production
from annual oilseed crops was attained during the early nineties
Green Revolution: The early 1960s was the phase of the Green
revolution in India. It led to an increase in higher-yielding varieties of
seeds due to improved agronomic technology. It allowed the then
developing country, India, to overcome poor agricultural productivity.  
Silver Revolution: The production of eggs was tremendously increased
during the Silver Revolution phase. The increased production of eggs
was made possible due to medical science and more protein-rich food
for the hens. 
Golden Revolution: The period between 1991 to 2003 is known as the
period of the Golden Revolution. This made India a world leader in the
production of bananas, mangoes, etc. and provided sustainable
livelihood and nutrition options.
Brown Revolution: This revolution focuses on meeting the demand for
coffee from the developed nations by growing socially responsible and
environment-friendly coffee. The Brown Revolution is related to
Visakhapatnam’s tribal areas.
Blue Revolution: Blue revolution made the emergence of aquaculture
an important and highly productive agricultural activity
Golden Fiber Revolution: Golden Fibre Revolution in India is related to
jute production. During the industrial revolution, jute started being used
as a raw material in the fabric industry and until today, the processed
jute is used for making strong threads and jute products.
The basic problem of Indian agriculture is that of excess production and
wrong crop mix that depresses the price of farm produce. Yet, the
government bans exports of an agricultural commonly whenever prices
of that commodity rise but does precious little if prices touch rock-
bottom.

One of the most important innovations of the Agricultural Revolution was
the development of the Norfolk four-course rotation, which greatly
increased crop and livestock yields by improving soil fertility and
reducing fallow. Crop rotation is the practice of growing a series of
dissimilar types of crops in the same area in sequential seasons to help
restore plant nutrients and mitigate the build-up of pathogens and pests
that often occurs when one plant species is continuously cropped.
Crop Rotation: Crop rotation is the practice of growing a series of
dissimilar types of crops in the same area in sequential seasons to help
restore plant nutrients and mitigate the build-up of pathogens and pests
that often occurs when one plant species is continuously cropped.
Rotation can also improve soil structure and fertility by alternating deep-
rooted and shallow-rooted plants. The Norfolk System, as it is now
known, rotates crops so that different crops are planted with the result
that different kinds and quantities of nutrients are taken from the soil as
the plants grow. An important feature of the Norfolk four-field system
was that it used labor at times when demand was not at peak levels.
Planting cover crops such as turnips and clover was not permitted under
the common field system because they interfered with access to the
fields and other people’s livestock could graze the turnips.
Agricultural Revolution: Mechanization
The mechanization and rationalization of agriculture was a key factor of
the Agricultural Revolution. New tools were invented and old ones
perfected to improve the efficiency of various agricultural operations.