science

Tochigishiro

Tochigishiro 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 Tochigishiro rather than just read about it. In short: Tochigishiro (Japanese: とちぎしろ) is a cultivar of hemp grown in Tochigi Prefecture, Japan. It meets international standards of non-narcotic agricultural hemp at about 0.2% THC, reckoned "remarkably low" by Sensi Seeds.

Key takeaways

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

Reference excerpt

Tochigishiro (Japanese: とちぎしろ) is a cultivar of hemp grown in Tochigi Prefecture, Japan. It meets international standards of non-narcotic agricultural hemp at about 0.2% THC, reckoned "remarkably low" by Sensi Seeds. It was grown in the early 20th century at Arlington Experimental Farm near the United States capital. The modern variety was developed beginning in 1973 by Kyushu University professor of pharmacy Itsuo Nishioka from seeds "found in southern Japan", and completed c. 1982 by the Tochigi prefectural government at Tochigi Agricultural Experiment Station in Tochigi-shi. According to a National Institute of Mental Health-affiliated researcher, the strain is missing the enzyme tetrahydrocannabinolic acid synthase that makes most Cannabis capable of producing THC. It is the most widely grown cultivar in Japan in the 21st century, being exempt from prohibition under the Cannabis Control Law, due to its low levels of psychoactive chemicals. Approximately 90% of the hemp grown in Japan is the Tochigishiro variety (as of 2007). A research report on an experimental plot at Kitami Agricultural Experimental Station on Hokkaido suggests that it may be the most productive known crop for biomass, yielding 52.7 tonnes/ha in a single season. The crop grows about 3 metres (9.8 ft) tall.

See also List of hemp varieties

References

Sources Takashima, D. (1982), "A new hemp variety 'Tochigishiro'" (PDF), Bulletin of the Tochigi Agricultural Experiment Station (Japan), 28: 47–54 Kojoma, Mareshige; Iida, Osamu; Makino, Yukiko; Sekita, Setsuko; Satake, Motoyoshi (February 2002), "DNA Fingerprinting of Cannabis sativa Using Inter-Simple Sequence Repeat (ISSR) Amplification", Planta Medica, 68 (1): 60–63, doi:10.1055/s-2002-19875, PMID 11842329 Kikuchi, Harumi; Moriyama, Emi (June 2016), The industrial hemp of Hokkaido – the challenge towards a future (PDF), Hokkaido Industrial Hemp Association, retrieved April 29, 2020 Clarke, Robert C.; Merlin, Mark D. (2013). "History of cannabis use for fiber". Cannabis: Evolution and Ethnobotany. Univ of California Press. pp. 135–198. ISBN 978-0-520-27048-0. Waller, Coy W. (1975), "Testimony of Coy W. Waller Ph.D., directory of the Research Institute of Pharmaceutical Sciences at the University of Mississippi, and former Vice President in Charge of Research, Meade-Johnson Co.", Marihuana-hashish Epidemic and Its Impact on United States Security: Hearings Before the Subcommittee to Investigate the Administration of the Internal Security Act and Other Internal Security Laws of the Committee on the Judiciary, United States Senate, Ninety-third Congress, Second Session, United States Congress / U.S. Government Printing Office, pp. 456–460 "The current state of cannabis cultivation" (PDF), ご注意ください! 大麻栽培でまちおこし? – 大麻の正しい知識で正しい判断 [Please be careful! Revitalization of a town by cultivation of cannabis?! The right knowledge of cannabis makes the right decision.] (pamphlet), Ministry of Health, Labour and Welfare (Japan), c. 2016, pp. 10–11, retrieved May 2, 2020

Worked examples

Example 1 — a first encounter with Tochigishiro

Start with the simplest possible case. Write down what Tochigishiro 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 Tochigishiro 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 Tochigishiro 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 Tochigishiro

In research: Tochigishiro 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 Tochigishiro 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: Tochigishiro is common in secondary-school and first-year university syllabi. It links to neighbouring topics Cannabis strains, Cannabis stubs, Hemp agriculture, so understanding it makes those chapters shorter.
In everyday life: Look for Tochigishiro 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.

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Tochigishiro in 20 minutes

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

Frequently asked questions

What is Tochigishiro in simple terms?

Why does Tochigishiro 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 Tochigishiro?

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 Tochigishiro.