TODAY -



E-Pao! Education - Urea in fish farms: What's left to eat?

Urea in fish farms: What's left to eat?

By: Irabanta Oinam *



Do we need a law to get fish farmers to manage nutrients?

Modern day citizens of the world are hooked on chemicals, though most are not aware of it. Resource-intensive food production methods, rising population and rising per capita consumption are bringing us closer to the limits of the planet's ability to produce safe food for everyone.

Consumption of excess chemical fertilizers has a broad range of effects on human and animal health. We talk about organic farming because the commonly used chemical fertilizers found in food can significantly influence ill-health of consumers.

Urea was discovered by Hilaire Rouelle in 1773. It was the first organic compound to be artificially synthesized from inorganic starting materials, in 1828 by Friedrich Woehler. Urea has the highest nitrogen content of all solid nitrogenous fertilizers in common use (46.4%N). It, therefore, has the lowest transportation costs per unit of nitrogen nutrient.

Fertilizers and supplemental feeds are predominant inputs of nutrient among various sources in closed ponds fish farming. Fertilizers are used primarily to propagate natural organisms as fish feed. Proper fertilizers and feeds are essential for high fish yields.

Today we replace the organic fertilize inputs of nutrient by chemical fertilizer such as urea in the most existing fish farms of Manipur to enhance supplement, or replace natural pond productivity. To increase pond carrying capacity, off-farm inputs such as chemical fertilizers and supplementary feeds are required.

So that vast amounts of nitrogen (urea) are used to increase the growth of fish during the short period. This nutrient passes right through the fish. The larger the livestock operation, the more nutrients will concentrate. More fish could be produced on less land within a short period by fewer people, thus supporting a huge population. As a result of modern chemical fish farming methods use large scale chemical fertilizers especially urea in Manipur.

Chemical farming generally pleases most people because they have earned good income within the short period. However, the most concerned problem resulted from the intensive culture is waste effluents which contain concentrated nutrients and suspended solids.

Those wastes are a major source of pollution that deteriorates water quality and accelerates eutrophication of aquatic environment. In closed pond culture systems with little water exchange the wastes in water are discharged when draining the ponds during fish harvest.

Many people do not realize the environmental and health costs stemming from tons of Urea poured into the fish farms to increase the growth of the fishes within a short span. The closed nature of the aquaculture system is an additional barrier to contamination of concentrate urea in the fish which may be a problem with farm-raised fishes of Manipur but should not be an issue in fish caught in the wild.

We do not consider the environmental impact based on the rate of nutrient wastes. The increasing use of chemicals in fish production may pose a relatively new set of risks. Excess nutrients fuel algal blooms by speeding up the algae's growth-and-decay cycle. This depletes oxygen in the water, killing off immobile bottom dwellers.

Excess nitrogen in soil can lead to less diversity of plant species, as well as reduced production of biomass. It can gradually increase the acidity of the soil until it begins to impede plant growth. Chemically fertilized makes less biologic activity in the soil food web (the microscopic organisms that make up the soil ecosystem). Misuse of excess urea in the modern fish farms in the state may result a great environmental impact.

In any commercial aquaculture venture, food safety is an issue. Despite these concerns the World Health Organization considers the fish industry to be of low risk to human health. Hunger and food insecurity are currently problems not of resource scarcity but of insufficient political will or moral imperative to change the way food is allocated.

It is estimated that the developing world alone is producing enough food to provide every person with > 2,500 calories/day. If unsustainable aquaculture remains the norm, it may became a major factor in fish food insecurity in the long run.

Both the individual and collective actions would hasten the shift toward a more sustainable pisceculture, which is an important component in the larger transition to a sustainable economy.

The mission of the fish farm shall include the goal of protection of the environment and of the consumer. It is of utmost importance to ensure the success of the fish farms to harvest and distribute the finest and safest of products to the public. Future considerations must include social considerations of community as well as employment opportunities made available by the fish farms.

All fish farmers need to protect the environment. Organic guidelines have long recognized the risks associated with misuse of chemical fertilizers and include rules that promote the best management practices, and organic standards prohibit chemical fertilizers.

Shall we use our resources in the unsustainable way by compromising the future option?


* Irabanta Oinam wrote this article for The Sangai Express
This article was webcasted on July 21st, 2006



* Comments posted by users in this discussion thread and other parts of this site are opinions of the individuals posting them (whose user ID is displayed alongside) and not the views of e-pao.net. We strongly recommend that users exercise responsibility, sensitivity and caution over language while writing your opinions which will be seen and read by other users. Please read a complete Guideline on using comments on this website.




LATEST IN E-PAO.NET
  • Phiyowon blooms @Ukhrul #2: Gallery
  • Irom Sharmila to end Fast on Aug 9
  • TG Students [Jul 22] #2: Gallery
  • Joydev Chongba @Kang : Gallery
  • Conceptualising Chak-Hao (black rice)
  • You are 14, what next?
  • Ethnic Groups in politicization of Ethnicity #2
  • RTI climax & empowered citizens
  • Job openings at SKY Hospital
  • Looking back at last 15 or more years
  • Tabletop tourism
  • Non-local labourers @Sekmai #1: Gallery
  • ILP : TG students protest #2 : Gallery
  • Inner Line Permit (ILP) :: Timeline
  • Obstacles in conservation of biodiversity #1
  • Games and sports of the Zeliangrongs #2
  • Buddhism differs from other religions #5
  • Dialogue: Protection of Indigenous People
  • Self-stigma: Let us do more than just talk
  • NSCN-IM statement on integration
  • Manipur soldier in missing IAF plane
  • Lauding DESAM stand: PIL against bandhs
  • Kabow Valley : Gallery
  • Ajoliu, Thanreiphy :: eMing
  • Uchek Langmeidong -children theatre
  • Manipur Education Policy #2
  • Bihar's prodigal science & Manipur's MPSC
  • Seed Bank for conserving crop diversity
  • Jiribam Wallpaper #9 : Download
  • July 23
  • Makeover of storytelling
  • Women rescued from sex ring
  • TG Students [Jul 22] #1: Gallery
  • Dedicated to all Heavy Metal lovers
  • JCILPS Women Volunteers [Jul 20]: Gallery
  • How many racial attacks against NE people
  • Cannot eliminate TB if we leave children
  • IBSD wins Intl Award for Development
  • Population Day: Investing in teenage girls
  • Time for more people to people contact
  • Bewildered Manipur police cyber cell
  • Landscape of Dzukou Valley #3 : Gallery
  • Homage to Khundrakpam Opendra: Gallery
  • Yangnu Golmei : Kala Akademi Award
  • BWF: Boon for the North East Region
  • Kanglen Kang Chingba #2: Gallery
  • EEVFAM Appeals to all victim families
  • The Beginning of the End : Poem
  • PII-ICRC Annual Press Awards 2016
  • Mary- won't be a poor performer in RS
  • Team effort earned us silverware: Chaoba
  • Arbitration Award on South China Sea
  • 1st batch NE youths join Delhi Police as SIs
  • Outcry on power hub at school
  • Don Bosco Maram : Par excellence
  • Does news amounts to contempt of court?
  • Laishram Bombayla : Rio Olympics
  • Archived News Photo #3 :: May - July 2016
  • Boat rally at Loktak lake #2: Gallery
  • Introspection: A Blog on Manipur
  • Government plans to set up 22 ITIs in NE
  • Woman alleges 'racial discrimination'
  • Govt to Publish Constitution in Manipuri
  • Can we eradicate Congress grass from NE
  • Career option in Sociology
  • Cycles of violence and revenge must end
  • Reg. Press Release issued by HSA, CCpur
  • Feeding false information to SC
  • The neglected sector
  • ILP : TG students protest #1 : Gallery
  • Thadou Freshers Meet @ Blore : Gallery
  • From Manipur, with love
  • 26 banks, 178 branches & 293 ATMs
  • Climate Change Adds To Poverty #1
  • Count the people at HIV risk right
  • Repeated atrocities on 'Enghish'
  • On Rio Olympic Games
  • Neck deep in too many issues
  • Blowing the gaff on greed
  • JCILPS: non-local labourers: Gallery
  • 25th Annual NAMA Convention Report 2016
  • NEROCA FC practising : Gallery
  • Finding A Moniker For Monica!
  • Nigerian, 2 Women Held For Fraud In Delhi
  • Delhi Dynamos sign Manipur's Milan, Soram
  • Climate change & increasing water demand
  • Best use of noble gestures from abroad
  • Multiple Reqts @ Cobigent Technologies
  • Freshers Meet: Thadou Students at BLR
  • Landing in yet another controversy : MPSC
  • Delivery issues
  • Phiyowon blooms @Ukhrul #1: Gallery
  • Joydeva Chongba @Kang Fest: Gallery
  • Tamu, window to Myanmar
  • 2nd Imphal National Print Salon 2016
  • 'Rhythms of Manipur' treats Imphal
  • Protecting the Environment? Greening...
  • Towards revitalising Communication
  • Inter-community agitations in Manipur #2
  • Media Awareness for Peace Building
  • Manipur HC seeks report on strikes
  • Gearing up for 2017 to 2019: BJP Vs Cong
  • Rina Arambam - Singer #2 :: eRang
  • Kanglen Kang Chingba #1: Gallery
  • Thoudam Opendro : Trans Am Bike Race
  • Stand of NSCN on National Principle
  • 15th July World Youth Skills Day
  • Education - road to social development
  • 9 April :: Movie Review
  • Deeper Introspection on Electoral Politics
  • Smart city project: NE wants 90:10 ratio
  • Narrow escape for Imphal-bound flight
  • Disquieting discourses on development
  • Imphal-Jiribam Highway condition : Gallery
  • ILP : Meira Katpa for Robinhood #2: Gallery
  • Consumption Of Dog Meat
  • Action against failing healthcare
  • What is Plastic Surgery?
  • Impact of Cartooning and Caricature #2
  • DM boost up aspiring entrepreneurs
  • Call Operator wanted at Virgo
  • Rescue of 21 children from Imphal Airport
  • Nude Protest before Kangla Gate
  • AMMA FC is going to Denmark
  • NE India & Sino-Indian rivalry
  • A matter of facts and Acts
  • Dzuko Lily @Dzuko valley #3: Gallery
  • Kang Chingba @ Konung #2 : Gallery
  • Atrocities on "English"
  • AIDS conferences- Has anything changed?
  • Japanese Light Design Workshop at Imphal
  • Bishnupur - In search of an old Mandir #3
  • Women's bodies as terrain of war #2
  • Indo-Naga Talks : News Timeline
  • A Lyrical Evening :: Poem
  • Job @ Cobigent Technologies
  • Rio honour for Manipur half dozen
  • Unity holds the key to success: Sushila
  • Manipur, Myanmar and democracy
  • Kang Khichri chaba : Gallery
  • Manipur State Population Commission #5
  • RNPlive.in -Gateway to explore Manipur
  • Discrimination of a "Pakka Indian"
  • Naga American (NAF) holds Conference
  • 9th Pineapple Festival : Gallery
  • Khubak Eshei @Kang Fest: Gallery
  • Gurumayum Asharani : Akademi Award
  • Sushila Chanu to lead India hockey
  • ILP Demand - Photos from 2012 :: Gallery
  • It is Kakching Town's Duck Egg
  • Th. Manorama Death Anniv : Gallery
  • Blood Donation Camp @Pune : Gallery
  • Career at Marine World
  • UPSTART: NE Startup Fest: Nominations
  • ILP : Meira Katpa for Robinhood #1: Gallery
  • Demand for ILP :: Articles/Photos...
  • Kang Chingba in Imphal: Gallery
  • Soyam Sweety (Actress Photos) :: eRang
  • NE Thadou Trophy : Gallery
  • Kang Chingba by ISKCON: Gallery
  • ILP : Robinhood Death Anniv: Gallery
  • SC judgement on fake encounters
  • RIST Popular Talk -20 : Cosmic rays
  • The Killing Fields 2016 :: News Timeline
  • Dzuko valley #1 :: 360° Panorama
  • Kang Chingba @ Moreh/Tamu : Gallery
  • Isak Swu Funeral at Hebron #2: Gallery
  • Haorongbam Maipaksana - Profile : eRang
  • Fish sourced from Loktak Lake: Gallery
  • Traditional House of Poumai : Gallery
  • Eikhoi Pabunggi (Scenes) #2 :: eRang
  • Great June Uprising #4: Gallery
  • Khoupum Khouduang (Water fall) : Gallery
  • Singda Dam :: 360° Panorama
  • Ha Long Bay Vietnam #2 : Gallery
  • Aspects of Meetei Yumjao : Gallery
  • Eyek Tamba :: Learn Manipuri script
  • ILP: Water Cannon to Students #1: Gallery
  • Manipur Phone Directory :: e-pao Tools
  • Download :: PMP Bill 2015
  • Download :: MLR&LR Bill 2015
  • Download :: MSE Bill 2015
  • SPONSORED ADS