chemistry

Jadam

Jadam is a chemistry 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 Jadam rather than just read about it. In short: Jadam (Korean: 자닮; pronounced [ja.dam]) is a organic fertilizer and pesticide practice used in the Korean natural farming methodogy developed by Youngsang Cho. Jadam is a portmanteau of a longer phrase, Jayeon eul damun saramdeul (Korean: 자연을 닮은 사람들; pronounced [ja.yʌn.ɯl dam.uŋ sʰa.ɾang.dɯl]) Which loosely means 'People who mimick nature'.

Key takeaways

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

Reference excerpt

Jadam (Korean: 자닮; pronounced [ja.dam]) is a organic fertilizer and pesticide practice used in the Korean natural farming methodogy developed by Youngsang Cho. Jadam is a portmanteau of a longer phrase, Jayeon eul damun saramdeul (Korean: 자연을 닮은 사람들; pronounced [ja.yʌn.ɯl dam.uŋ sʰa.ɾang.dɯl]) Which loosely means 'People who mimick nature'. However, it's most commonly known in English as Jadam.

Improvements to Korean Natural Farming Youngsang Cho is the son of the creator of Korean natural farming (KNF), Hankyu Cho, but had several criticisms about it. The first, is that KNF is too complicated and too expensive to start. Thus he started Jadam in 1991 in order to try to streamline natural farming for everyone so that it was cheap and easy and still meet the requirements of organic farming.

Key recipes Jadam Wetting Agent is a soap made from canola oil and potassium hydroxide flakes and distilled water or rain water. Jadam Herb Solution uses natural herbs from the environment as a natural pesticide. Jadam Sulfur is a compound made of distilled water, sulfur and caustic soda to treat fungal infections in plants. This may also include caly and azomite and as additives, though these are said not to be necessary. Jadam Microorganism Solution is used as a fertilizer and also to help with fungal infections. It is a concentrated liquid culture of indigenous microorganisms Jadam Liquid Fertilizer is a fermented weed tea that is diluted down to help the bring back nutrients to the soil.

Controversy Jadam has been criticized for deviating from normal methods of organic farming where traditional organic farming discourages using anaerobic processes, saying it does not enhance the fertility of the soil, while Jadam promotes it. Some papers do suggest that anaerobic organisms can be useful for farming by increasing soil organic carbon.

See also Korean natural farming Compost Effective microorganism Natural farming Soil microbiology Soil food web

References

Worked examples

Example 1 — a first encounter with Jadam

Start with the simplest possible case. Write down what Jadam claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In chemistry, 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 Jadam 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 Jadam 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 Jadam

In research: Jadam appears in chemistry 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 Jadam 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: Jadam is common in secondary-school and first-year university syllabi. It links to neighbouring topics Agriculture in Korea, Organic farming in Asia, so understanding it makes those chapters shorter.
In everyday life: Look for Jadam 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 Jadam in 20 minutes

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

Frequently asked questions

What is Jadam in simple terms?

Why does Jadam matter?

Because it connects several chemistry 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 Jadam?

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 Jadam.