I often travel to different villages across Pakistan to see if all the chatter and policies about climate change in the development sector translate into something tangible for the local farming communities.
One such trip, to a farm in Thati Gujran village on the outskirts of Islamabad, proved to be particularly enlightening. The farm, a 21-acre piece of land privately-owned by Malik Tariq, is located in a rain-fed zone of the Potohar Plateau which receives approximately 800-1,000mm of rain annually. The farm is irrigated by a seven-acre pond on the premises — one of the many small check dams built by the Punjab government’s Soil and Water Conservation Department across the Potohar region that harvests rainwater for agriculture.
Since the cultivated area of Tariq’s farm is at a higher elevation than the pond, a diesel-fuelled pump was installed to supply water for irrigation. Unfortunately, as Tariq explained, crop productivity remained low because the irrigation system was uneconomical and inefficient.
How technology is being used on farms to mitigate the effects of climate change
However, when Tariq began working with the National Agriculture Research Centre (NARC), which functions under the auspices of the Pakistan Agricultural Research Council (PARC), his situation drastically improved. Under NARC’s guidance, he began using Climate Smart Agriculture (CSA) technologies — industry jargon for green farming methods. The diesel pump was replaced with a five-horsepower (hp) submersible DC solar pump in a move towards decreasing dependency on fossil fuels and reducing carbon emissions.
Tariq’s farm is not an isolated case. According to Dr Bashir Ahmed, the principal scientific officer at the Climate Change Alternate Energy & Water Resources Institute (CAEWRI), CSA technologies have been successful in improving crop yield and result in a better yield compared to traditional farming.
THE EPICENTRE OF LIFE
Tariq’s farm is a NARC pilot project. Under the organisation’s guidance, it has become more than simply a source for irrigation water. The pond, which has a capacity of 200,000-300,000 gallons, is used to irrigate the entire farm. In addition, it is also used to farm fish — almost 6,000 fish are harvested at one time in the pond. A rain-gun operated with the same DC solar pump aerates the pond ensuring ample supply of oxygen for the fish.
Generally, natural ponds in the area spread disease, increase waterlogging, and ultimately become a burden on the community but this pond has been used to transform the surrounding farmland into a haven for farmers.
Tariq’s farm has also become a model for water efficiency, energy-saving, and climate change mitigation. For example, the farm operates on 24 mono-crystalline solar panels, which produce 4.8 KW of electricity. Even maintenance of the panels is automated: a rotating rain-gun washes the panels at fixed times to prevent build-up of dirt on the panels.
Another intervention is the overhead microsprinkler part of the systems known as High Efficiency Irrigation Systems (HEIS). Other examples of HEIS include drips and bubbler irrigation which ensure efficiency of water usage. With warnings of impending water scarcity within the next decade, the need to test the viability of such technologies is paramount.
Other interventions on the farm include a 5,000-gallon water tank located at a higher elevation than the cultivated parts of the farm. This is filled when the sun is shining and the solar pump is functioning at maximum efficiency and supplies water during cloudy days when the solar pump cannot be used. The elevation makes it possible to feed the HEIS using gravity flow, thus not requiring electrical pumping or flooding.
Finally, this farm has also broken the tradition of mono-cropping. With the introduction of multiple cropping and tunnel farming under the guidance of NARC, this farm has been transformed into a multi-crop agro-economic model farm.
What is perhaps even more important is to ensure that such technology is affordable for all farmers, not just landlords or corporate farms.
AN INFECTIOUS IDEA
Tariq has inspired his fellow neighbours to also adopt the new CSA technologies and methods. Haji Asim — who owns 14 acres of land in Fateh Jang, located close to Tariq’s farm — has replicated many of NARC’s intervention.
For instance, Asim has installed a five-hp DC solar pump linked to solar panels; lined a depression to convert it into a pacca pond; installed tunnels equipped with drip irrigation; and diversified into horticulture (grapes and olives) to increase income and reduce vulnerability to market risk and climate-induced hazards.
Seeing the impact of such technologies first-hand, other farmers are more willing to adopt them; this impact is not lost on NARC officials either. The organisation conducts field days and professional trainings for farmers.