Increasing Water Use Efficiency in Agriculture

 

Agriculture 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 in 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

 

Back to Contents

 

Share

Subscribe

Home

Contact Us

About Us