Agricultural inputs such as seeds and fertilisers are similarly unaffordable. While pumps and pipes require investment, operation and maintenance, the water itself is free, and there is little need to interact with others in the community or with the government.
They allow people to pipe water over relatively long distances from the source and either use it on their fields or sell it. For more information view our media page and republishing guidelines.
You might also like. Motorised pumps, the most influential technology in water for agriculture in the last 20 years, are just one example. And with increasing rainfall variability predicted by climate change experts,it is becoming too risky for farmers to invest in fertilisers, seeds and good soil management practices.
But there is growing concern about the impact of increasing drought on agricultural output in Sub-Saharan Africa, where 95 per cent of farmlands are rainfed and whererates of soil fertility loss are alarming. Volume 3, Issue 1JunePages open access Climate change and challenges of water and food security Author links open overlay panel Anil KumarMisra Show more Open Access funded by The Gulf Organisation for Research and Development Under a Creative Commons license Abstract Increasing water security large scale and food security are the key challenges under climate change as both are highly vulnerable to continuously changing climatic patterns.
An agricultural water management solution must account for a range of factors beyond technology or agricultural inputs. There is a role for the private sector in financing, maintaining and marketing sustainable agriculture, such as microcredit schemes that help farmers access what they need.
People buy a reasonably priced pumpset, go to a water source such as groundwater, a river or drain, and pump water to their fields when they need it.
Some of the prominent climate change impacts are, growing deserts, and increase in the magnitude of floods and droughts. Studies have predicted that the average global temperature may increase by 1. An extreme decline in crop yields in arid and semi arid areas globally has caused food shortages and a manifold increase in food inflation.
Read the original article. Bottlenecks to progress But these innovations are not being taken up at the speed or scale necessary across regions where they are badly needed, such as Sub-Saharan Africa.
Knowing the right technology or agricultural practice is simply not enough. There is a tried and tested way of reducing this risk: You can simply run the first few lines of the article and then add: The full article is available here as HTML.
People who have not been well served by government water services have already taken matters into their own hands, often stimulating small-scale private sector development. Drought insurance and post-harvest technologies such as food storage are complementary approaches to better water storage.
Uncontrolled extraction may lead to falling groundwater tables, shrinking rivers, and competition and conflict over water. We need to consider a range of options from ponds and small on-farm reservoirs to groundwater and soil moisture.
Small-scale water solutions are a key to increasing agricultural productivity in the face of climate change, says water expert David Molden. Water storage will also be particularly important to cope with climate change and more variable rainfall.
Evidence shows that better water and soil management can increase grain productivity despite climate change. The advantage of small-scale, individual approaches is that they can be quickly installed with short payback times to a greater number of small-scale farmers.
Policies and investment can help the development and uptake of small-scale technologies. Small-scale solutions In part, it means rolling out large-scale irrigation schemes. Long flexible pipes are another. Press Ctrl-C to copy Small-scale solutions key to water security By David Molden Small-scale water solutions are a key to increasing agricultural productivity in the face of climate change, says water expert David Molden.
This is largely because a lot of other elements have to be in place.
This manuscript highlights groundwater recharge by utilization of wastewater using the Soil Aquifer Treatment SAT method in irrigation and the significance and methods of artificial recharge of groundwater. The easiest way to get the article on your site is to embed the code below.
But, with high costs per hectare and per beneficiary, large schemes are costly and slow to develop, and relatively few farmers would benefit from improved production. Many water technologies are not available in local markets or not affordable by small-scale farmers. Previous article in issue.
Increasing water use at one place will affect someone elsewhere in a river basin. This article was originally published on SciDev. The good news is that any action taken now to improve water security for food production will ultimately help us cope with climate change.
You have to credit SciDev. It is vital that policymakers plan and regulate the right policies for sustainable water management.
It is relatively easy to control or regulate one large irrigation scheme, but managing groundwater resources used by millions of small-scale pumpers is a logistical nightmare, as can be seen in India.Climate change and challenges of water and food security.
Author links open overlay panel Anil Kumar Misra. Show more. Water security under climate change. Therefore large scale adaptation of crop breeding is essential to ensure food security.
Using named examples, assess the contribution of large scale water management projects in increasing water security. 15 Water security means having access to sufficient, safe, clean and affordable water.
Large Scale water managemenet projects Geography Homework Contents a) Explain how physical and human factors have contributed to the variation in water scarcity shown 1 b) Using named examples, assess the contribution of large-scale water management projects in increasing water security 3 a)/5(3).
Small-scale water solutions are a key to increasing agricultural productivity in the face of climate change, says water expert David Molden. Free Essay: Using named examples, assess the contribution of large scale water management projects in increasing water security.
15 Water security means. Global Water Security – increasing supply, managing demand and allocating water differently. This report sets out to approach the issues surrounding water security systematically. It argues that there needs to be a review of the governance and.Download