science

John Deere DB120

John Deere DB120 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 John Deere DB120 rather than just read about it. In short: The John Deere DB120 is an agricultural planter made by Bauer Built Mfg. in Paton, Iowa. Upon its release in 2009, it was the largest production planter in the world.

Key takeaways

John Deere DB120 belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect John Deere DB120 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of John Deere DB120 from memory before moving on to harder problems.

Reference excerpt

The John Deere DB120 is an agricultural planter made by Bauer Built Mfg. in Paton, Iowa. Upon its release in 2009, it was the largest production planter in the world. It has a 120 feet (37 m) wide tool-bar and plants 48 rows which are 30 inches (760 mm) apart. It is estimated that the planter should sow 70 to 80 acres (0.32 km2) per hour at 5 to 5.5 miles per hour ground speed. This means that in a 12-hour day it will plant almost two sections of land. John Deere claims that the planter is 30% more productive than their 36 row DB90 planter. To transport such an incredibly wide implement, the DB120 folds into five sections . The planter weighs in at over 20 tons empty and almost 24 tons when loaded with seed. The DB120 had a limited release in 2009 with orders being taken for the 2010 season. It retailed at $345,000. In 2020, the base price on the John Deere website was over $500,000. The DB120 needs a GPS (satellite navigation) system to guide it as there are no row markers to indicate where to position the tractor/planter.

References

External links "JD DB120 Planter". The Prairie Star. Montana, U.S. October 9, 2009. Retrieved 18 May 2010. Vogt, Willie (April 2009). "World's largest planter hits fi elds in '09" (PDF). Prairie Farmer. p. 18. Archived from the original (PDF) on 10 July 2011. Retrieved 18 May 2010.

Worked examples

Example 1 — a first encounter with John Deere DB120

Start with the simplest possible case. Write down what John Deere DB120 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 John Deere DB120 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 John Deere DB120 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 John Deere DB120

In research: John Deere DB120 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 John Deere DB120 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: John Deere DB120 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Agriculture stubs, John Deere vehicles, Tractors, so understanding it makes those chapters shorter.
In everyday life: Look for John Deere DB120 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 John Deere DB120 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what John Deere DB120 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 John Deere DB120 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is John Deere DB120 in simple terms?

The John Deere DB120 is an agricultural planter made by Bauer Built Mfg. in Paton, Iowa. Upon its release in 2009, it was the largest production planter in the world.

Why does John Deere DB120 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 John Deere DB120?

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 John Deere DB120.