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Zero waste agriculture

Zero waste agriculture is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Zero waste agriculture rather than just read about it. In short: Zero waste agriculture is a type of sustainable agriculture which optimizes use of the five natural kingdoms, i.e. plants, animals, bacteria, fungi and algae, to produce biodiverse-food, energy and nutrients in a synergistic integrated cycle of profit making processes where the waste of each process becomes the feedstock for another process. History The integration of shallow oxidisation ponds of microalgae was demo…

Zero waste agriculture — main illustration
Zero waste agriculture — illustration

Key takeaways

  • Zero waste agriculture belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Zero waste agriculture to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Zero waste agriculture from memory before moving on to harder problems.

Reference excerpt

Zero waste agriculture is a type of sustainable agriculture which optimizes use of the five natural kingdoms, i.e. plants, animals, bacteria, fungi and algae, to produce biodiverse-food, energy and nutrients in a synergistic integrated cycle of profit making processes where the waste of each process becomes the feedstock for another process.

History The integration of shallow oxidisation ponds of microalgae was demonstrated by Golueke & Oswald in the 1960s. The widespread global implementation of these systems can be largely credited to Prof George Lai Chan-Yu-Thim (2 March 1924 Mauritius-8 October 2016 Mauritius) from ZERI. Zero waste agriculture is now practiced in China (ecological farming), Columbia (integrated food & waste management systems) & Fiji (integrated farming systems), India (integrated biogas farming), South Africa (BEAT Coop & African Agroecological Biotechnology Initiative) and Mauritius. The Brazilian government has adopted integrated farming system as a major social technology for the uplifting of marginalized and subsistence farmers through coordination with TECPAR. Zero waste agriculture combines mature ecological farming practices that delivers an integrated balance of job creation, poverty relief, food security, energy security, water conservation, climate change relief, land security & stewardship.

Practice Zero waste agriculture is optimally practiced on small 1-5 ha sized family owned and managed farms and it complements traditional farming & animal husbandry as practiced in most third world communities. Zero Waste Agriculture also preserves local indigenous systems and existing agrarian cultural values and practices. Zero waste agriculture presents a balance of economically, socially and ecologically benefits as it:

optimizes food production in an ecological sound manner reduces water consumption through recycling and reduced evaporation provides energy security through the harvesting of biomethane (biogas) and the extraction of biodiesel from micro-algae, as a by-product of food production provides climate change relief through the substantial reduction in greenhouse gas emissions from both traditional agriculture practices and fossil fuel usage reduces the use of pesticides through biodiverse farming Certification of such farming practices is both challenging and an opportunity.

See also Agricultural technology a/k/a Agritech Integrated Multi-Trophic Aquaculture Miniwaste

References

Further reading Ashok Pandey; Jonathan Wong; Kim Bolton; Mohammad Taherzadeh, eds. (July 18, 2019). Sustainable Resource Recovery and Zero Waste Approaches (Ebook). St. Louis, Missouri, USA: Elsevier Science. ISBN 978-0-444-64283-7. Gowhar Hamid Dar; Humaira Qadri; Khursheed Ahmad Wani; Mohammad Aneesul Mehmood; Rouf Ahmad Bhat, eds. (August 30, 2019). Innovative waste management technologies for sustainable development (Ebook). Practice, Progress and Proficiency in Sustainability (PPPS) Book Series. Hershey, Pennsylvania USA: IGI Global. ISBN 978-1-7998-0033-0.

Illustrations

Zero waste agriculture: The Songhai zero waste farm in Benin was started by Father Godfrey Nzamujo in 1985.  It is now recognised as a centre of excellence by the UN and its philosophy and methods are now studied and followed by thousands in Africa.  The picture shows the generation of biofuel from animal waste.  This fuel is then used for cooking and generation of electricity.[1]
The Songhai zero waste farm in Benin was started by Father Godfrey Nzamujo in 1985. It is now recognised as a centre of excellence by the UN and its philosophy and methods are now studied and followed by thousands in Africa. The picture shows the generation of biofuel from animal waste. This fuel is then used for cooking and generation of electricity.[1]
Zero waste agriculture illustration
Zero waste agriculture illustration

Worked examples

Example 1 — a first encounter with Zero waste agriculture

Start with the simplest possible case. Write down what Zero waste agriculture claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Zero waste agriculture before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Zero waste agriculture ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Zero waste agriculture

In research
Zero waste agriculture appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Zero waste agriculture in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Zero waste agriculture is common in secondary-school and first-year university syllabi. It links to neighbouring topics Food waste, Sustainable agriculture, Waste, so understanding it makes those chapters shorter.
In everyday life
Look for Zero waste agriculture outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Zero waste agriculture in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Zero waste agriculture means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Zero waste agriculture out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Zero waste agriculture in simple terms?

Zero waste agriculture is a type of sustainable agriculture which optimizes use of the five natural kingdoms, i.e. plants, animals, bacteria, fungi and algae, to produce biodiverse-food, energy and nutrients in a synergistic integrated cycle of profit making processes where the waste of each proces…

Why does Zero waste agriculture matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Zero waste agriculture?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Zero waste agriculture.

Tags

  • Food waste
  • Sustainable agriculture
  • Waste

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