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Aquaponics a green method to produce quality food

Agricultural productivities suffered a lot during recent past due to unexpected climatic changes,
 
torrential rains, heat waves, drought and floods. Due to these mentioned constraints shortage of
 
energy was one of the hurdles as well. It reflects that the nature is shifting its paradigm which is
 
directly or indirectly danger to the agriculture production ultimately food security is at risk on
 
this earth crust.  
 
Due to above narrated uncertain climatic changes, number of issues has to be faced to humanity
 
for coping up future dangers. Plant breeder responsibilities has enhanced much in order to
 
develop varieties by prescribe parameters in changing the theme of crop production. Addition to
 
above number of threats to agriculture sector arise when developed nations use large amount of
 
agrochemicals to get maximum productivity from crops. This action resulted soil and air
 
pollution. Milk and meat is essential part of human diet, for this purpose raising of farm animals
 
is inefficient in terms of land availability and energy requirements to raise fodder and other
 
animal feed to meet the requirements of protein for huge masses.
 
The UNO report (2015) indicates that during previous eleven years, six times it happened that
 
world produced less food as required. Present pace of rate of population, it is expected that the
 
world will be having 9.3 billion in 2050, this will be an explosion, the average of quality land for
 
crop productivity will be very few as accommodation requirements will cover most of the land.
 
Then we must be shifting trends towards vegetarianism and option for protein source may be
 
shifted to fish or aquaculture. It will take time, growing crops for feeding animals will expected
 
to be covering most of the cultivated land. For intensive culture, greenhouse gases will be
 
comparatively more resulting threat to flora and fauna.
 
Therefore, there is a need to promote a new “green” method of farming like aquaponics around
 
the world for ‘locally grown food’ in any region to produce healthier food that requires far less
 
land and water, and at the same time, is environmentally friendly it will not only eliminate the
 
need or use of artificial chemicals, will be producing sustainability in food security but also will
 
reduce energy consumption in agriculture production, shipping of food, and greenhouse gas
 
emissions etc. It will also create jobs thus helpful in strengthening the economy at local level.
 
Aquaponics has been explored for several decades as a possible solution to the foregoing
 
environmental, energy and food shortage problems.  It combines the art of growing aquatic
 
animals (fish), known as aquaculture, with the modern technology of hydroponics in which
 
plants are grown without soil. The fish waste provides an organic food source for the growing
 
plants and the plants provide a natural filter for the water the fish live in. The third participants
 
are the microbes (nitrifying bacteria) and composting red worms that thrive in the growing
 
media. They do the job of converting the ammonia from the fish waste first into nitrites, then into
 
nitrates and the solids into vermicompost that are food for the plants. In aquaponics, fish and
 
plants are grown together in an integrated closed loop re-circulating system with a very low
 
percentage of water use efficiency or water loss due to evapotranspiration. The fish waste
 
(effluent) produced by the fish is delivered from the fish tank to a settling tank to remove the
 
heavy ‘waste’ and then sent to the grow trays to provide a food source for growing plants in the
 
gravel and the plants provide a natural filter for the water that keeps the fish healthy. This
 
symbiotic relationship between the fish and the growing plants is the goal of aquaponics by
 
creating a sustainable ecosystem in which both fish and plants can thrive consequently, produces
 
safe, fresh protein and healthy vegetables.
 
In short aquaponics has number of merits and there are number of complexities in the installation
 
of the system as it needs huge amount of capital and skillful labor availability. The construction
 
of the system is also not easy and the maintenance of aqueous food requirements and disposal of
 
waste will also be a great question mark as it is challenge to maintain pH of water, check
 
micronutrients depletion and water temperature. These are pre requisite for struggling of survival
 
for living entities. It will need extra powers and budgets for pumping fresh water and disposal of
 
stagnant water. To cut the story short proper aquaponics system will be difficult to maintain and
 
unfortunately, due to any reason collapsing and failure of the system will result death of fish and
 
plants. Despite all these constraints and being positive the system can be established and work
 
for better ecosystem and food security of masses in long run.

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AQUAPONICS A GREEN METHOD TO PRODUCE QUALITY FOOD

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