Increasing Water Use Efficiency in Agriculture
A griculture
has, arguably, been very successful at capturing a major
share
of the world’s exploitable water resources. The use of water for farming
cannot be avoided but needs to be justified for the sake of future
generations. In a situation of growing water scarcity and rising demands
for non-agricultural uses of water, reassessment of sectoral allocations
of water becomes inevitable. Water scarcity
which already affects one in three persons on earth, is set to increase
in magnitude and scope as the global population grows and the increasing
affluence drives up demand for water. According to the UN Convention to
Combat Desertification (UNCCD), "half the world’s population will be
living in areas of high water stress by 2030, including 75 to 250
million people in Africa." Failure to act on water scarcity will lead to
crop systems failure, food insecurity and desertification among other
systemic failures. Efforts must be prioritised at all levels to increase
water-use efficiency, reduce water wastage and manage the demand for
water.
Increasing efficiency in
irrigation—which is responsible for the consumption of 70
percent of the world’s total water withdrawal—is necessarily a point for
action. An improved water management i n
agriculture could increase global water availability, catalyse
development, reduce soil erosion and lead to increased
and diversified agricultural yields, thereby augmenting our ability to
feed a population projected to reach 9 billion by 2050. At present,
according to the UN Food and Agriculture Organisation (FAO), an
astonishing 60 percent of the water diverted or pumped for irrigation is
wasted via runoff into waterways or evapotranspiration. This does not
have to be the case. Farmers can achieve water-use efficiency in a
number of ways: by growing a diverse array of crops suited to local
conditions, especially in drought prone regions, by practicing
agroforestry or growing perennial crops to build strong root systems and
reduce soil erosion, by maintaining healthy soils either by applying
organic fertilizer or growing cover crops to retain soil moisture and by
adopting irrigation systems like "drip" lines that deliver water
directly to the roots of plants.
Bundelkhand is one such region
in India affected by the scarcity of water. Spread over an area of
70,000 sq. km in the central part of the country, this region is
characterised by a hot semi-arid climate with an average annual rainfall
ranging from 750mm in the north-west to 1250mm in the south east. 90% of
the rainfall occurs between June and September while most of it is
concentrated in the monsoon months of July and August.
Livelihoods in Bundelkhand
depend largely on agriculture. Very little of medium or large-scale
industry exists in the region. Despite agriculture being the predominant
source of livelihood, productivity and cropping intensity remain low
relative to Indian averages. This low productivity is due to a variety
of constraining factors, from the residual and shallow soils to frequent
droughts, poor awareness of climate change and increasing water
scarcity. Water scarcity, indeed, remains one of the primary reasons
constraining development in agriculture and thereby poverty alleviation.
There is an urgent need to augment water resources and promote water
management in Bundelkhand to promote development in this region.
Development Alternatives (DA)
has been promoting augmentation, conservation and management of water
resources for agriculture through its interventions on sustainable
agriculture in this region. Over the years, our work has enabled
groundwater recharge, rejuvenated 25,000 hectares of agricultural land,
reduced soil erosion and water wastage. These interventions can be
broadly classified into two types – Water Resource Management and
Institutional Mechanisms. The first focuses on developing infrastructure
and promoting technologies that conserve water, and the second lays
stress primarily on building systems for water management in the
community, to uphold sustainability of these interventions.
Water Resource Management
for enhancing water availability
In this domain, our work
focuses on
•
Creating check
dams/watersheds: DA pioneered the re-use of check dams for water
conservation. Over the years we have established over 150 check dams and
other water-harvesting infrastructure projects to promote water
harvesting, conservation and recharge of ground water for agricultural
use.
•
Increased water use
efficiency in agriculture: Within this range of activities, we
particularly focus on ensuring the adoption of appropriate water
management techniques on farms with respect to irrigation. Farmers are
trained to adopt water efficient practices like drip irrigation and
sprinkler irrigation. Village level water budgeting is carried out for
promoting an efficient use of water.
•
Conservation of
fertile top soil: We constantly endeavour to encourage farmers to
conserve their fertile top soil, particularly with respect to moisture
level. They are introduced to techniques like farm bunding and mulching
and technologies like shade nets for the conservation of soil moisture
and improving its fertility levels. Structures like gabons, gully plugs
and contour trenches are also promoted. We also advocate
agroforestry/plantations for growing plants with strong root systems
that prevent soil erosion.
Building Institutional Systems
for Sustainability
These interventions are aimed
at building the capacity of the community to manage and govern their
water systems. As already mentioned, these are generally coupled with
resource management systems. These foster community participation and
ownership of change processes that are designed to improve management of
natural resources and the resulting benefits.
•
Creating Watershed
Committees: Ensuring multi-stakeholder participation, watershed
committees are set up in areas of watersheds for planning, execution and
monitoring. These committees are established to manage water resources,
soil and water conservation, equitable resource allocation and plant
management. They monitor, maintain and manage all watershed works. They
are responsible for resolving conflicts, ensuring transparency and
creating accountability measures. Importantly, they are trained to be
the stewards of water resources.
•
Water User Groups:
These groups consist of those who are likely to derive direct benefits
from a particular watershed work or activity. The User Groups are
responsible for the operation and maintenance of all the assets created
under the project in close collaboration with the Gram Panchayat and the
Gram Sabha.
•
Farmer Clubs: DA
encourages the formation of community institutions. With respect to our
work in agriculture, we have encouraged the formation of farmer clubs
across our villages in Bundelkhand. These farmer clubs are encouraged to
adopt sustainable agriculture practices through group mechanisms and
economic incentives. They are trained in establishing and maintaining
backward linkages for ensuring access to agri-inputs and in demand
collection for agri-inputs from amongst members. Trainings are conducted
for these farmers on livelihood development and income generation
opportunities.
•
Promoting Livelihoods
near Watersheds: Livelihoods are promoted near watersheds so as to
create incentives for the community to promote and conserve natural
resources/water. Communities are trained on farm based income generation
activities such as vegetable cultivation as well as non-farm, off-farm
opportunities such as development of seed bank and nursery.
In our endeavour to promote
sustainable livelihoods, DA is continually striving to promote
agriculture development and natural resource conservation. Our work has
reaped benefits for over 60,000 households that cope with the
adversities of climate change and declining resource base.
q
Dr. Krishna Murari
kmurari@devalt.org
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