science

Vine pull schemes

Vine pull schemes 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 Vine pull schemes rather than just read about it. In short: Vine pull schemes are programs whereby grape growers receive a financial incentive to pull up their grape vines, a process known as arrachage in French. A large program of this kind was initiated by the European Union (EU) in 1988 to reduce the wine lake glut from overproduction and declining demand.

Key takeaways

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

Reference excerpt

Vine pull schemes are programs whereby grape growers receive a financial incentive to pull up their grape vines, a process known as arrachage in French. A large program of this kind was initiated by the European Union (EU) in 1988 to reduce the wine lake glut from overproduction and declining demand. In the first five years of the program, growers, mainly in southern France and southern Italy, were paid to destroy 320,000 hectares or 790,400 acres (3,199 km2) of vineyard. This was the equivalent to the entire vineyard area of the world's fourth largest grower of grapes, the United States. The EU has recently resumed a vine pull scheme and Plan Bordeaux proposes additional vine pulls to increase prices for generic Bordeaux wine. It is believed that this has contributed to the "global wine shortage". Research by the American financial services firm Morgan Stanley says demand for wine "exceeded supply by 300m cases in 2012".

References

Further reading Robinson, Jancis (Ed.) The Oxford Companion to Wine. Oxford: Oxford University Press, second edition, 1999.

Worked examples

Example 1 — a first encounter with Vine pull schemes

Start with the simplest possible case. Write down what Vine pull schemes 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 Vine pull schemes 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 Vine pull schemes 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 Vine pull schemes

In research: Vine pull schemes 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 Vine pull schemes 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: Vine pull schemes is common in secondary-school and first-year university syllabi. It links to neighbouring topics Wine stubs, Wine terminology, so understanding it makes those chapters shorter.
In everyday life: Look for Vine pull schemes 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 Vine pull schemes in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Vine pull schemes 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 Vine pull schemes out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Vine pull schemes in simple terms?

Why does Vine pull schemes 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 Vine pull schemes?

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 Vine pull schemes.