astronomy

Subbanna Ayyappan

Subbanna Ayyappan is a astronomy 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 Subbanna Ayyappan rather than just read about it. In short: Subbanna Ayyappan (10 December 1955 – 10 May 2025) was an Indian aquaculture scientist hailing from the Karnataka State who held several key positions in various government organisations related to agricultural science. He was the Director-General of Indian Council of Agricultural Research (ICAR) and Secretary to Government, Department of Agricultural Research and Education (DARE) from January 2010 to February 2016.

Key takeaways

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

Reference excerpt

Subbanna Ayyappan (10 December 1955 – 10 May 2025) was an Indian aquaculture scientist hailing from the Karnataka State who held several key positions in various government organisations related to agricultural science. He was the Director-General of Indian Council of Agricultural Research (ICAR) and Secretary to Government, Department of Agricultural Research and Education (DARE) from January 2010 to February 2016. He was also the Chancellor of Central Agricultural University, Manipur. He was instrumental in bringing about the Blue Revolution in India. He was the first non-crop scientist to head the ICAR. Ayyappan held a Ph.D. degree and a master's degree in Fish Production and Management from the College of Fisheries in Mangalore which was then a part of the University of Agricultural Sciences, Bangalore. He published several research papers in areas of fisheries, limnology, and aquatic microbiology. Ayyappan began his career in ICAR as a scientist at Central Inland Fisheries Research Institute, Barrackpore in 1978. In 1996 he was appointed the Director, CIFA, Bhubaneswar, where he served for almost five years prior to holding the office of the Director, CIFE, Mumbai (Deemed University). He came to the ICAR headquarters in 2002 as the Deputy Director General (Fisheries) and served for almost eight years in that capacity before taking up the important post of the Secretary, DARE and Director General, ICAR on 1 January 2010. He was the founder Chief Executive of the National Fisheries Development Board, DAHD&I, Hyderabad (2006–2008). Ayyappan was also Chairman of National Accreditation Board for Testing and Calibration Laboratories (NABL).

Death Ayyappan was reported missing on 7 May 2025. On 10 May, his body was found in the River Cauvery near Sai Ashram at Srirangapatna, Karnataka, a favourite place of his for dhyana. He was 69. Investigations indicated that he died by suicide.

Recognition

Padma Shri In 2022, the Government of India conferred the Padma Shri award, the third highest award in the Padma series of awards, on Subbanna Ayyappan for his distinguished service in the field of science and engineering. The award is in recognition of his service as a "Respected Aquaculture Scientist, playing a key role in powering India's Blue Revolution".

Other recognitions and awards Subbanna Ayyappan received several recognitions and awards for his work related to aquaculture and related areas. These include:

Zahoor Qasim Gold Medal awarded by the Society of Biosciences in India (1996–1997) Special ICAR Award (1997) ICAR Award for Team Research as the Team leader for significant contributions in fisheries (1997–1998) Dr. V.G. Jhingran Gold medal (2002) Prof. H.P.C. Shetty Award for Excellence in Fisheries Research and Development, Asian Fisheries Society, Indian Branch (2002) Asian Scientist 100, Asian Scientist (2023)

References

Worked examples

Example 1 — a first encounter with Subbanna Ayyappan

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

In research: Subbanna Ayyappan appears in astronomy 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 Subbanna Ayyappan 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: Subbanna Ayyappan is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1955 births, 2025 deaths, 2025 suicides, so understanding it makes those chapters shorter.
In everyday life: Look for Subbanna Ayyappan 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.

Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Subbanna Ayyappan” →

Affiliate

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

How to study Subbanna Ayyappan in 20 minutes

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

Frequently asked questions

What is Subbanna Ayyappan in simple terms?

Why does Subbanna Ayyappan matter?

Because it connects several astronomy 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 Subbanna Ayyappan?

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 Subbanna Ayyappan.