How to Choose Keywords for an Agriculture and Nutrition Research Paper

Keywords are how somebody who has never heard of your paper finds it. Choose 3 to 6 terms that a searcher would type but that do not already appear in your title, covering the population, the crop or food, the outcome and the setting. Repeating the title in the keyword list is the commonest mistake and wastes the only free reach your paper gets.

What Keywords Actually Do

When a nutrition journal publishes your paper, databases and search engines index the title, abstract and keywords, often nothing else. Your title carries a handful of terms. The keyword list is a second, independent set of doors into the same paper.

So the question is not “what is my paper about?” — the title answered that. It is “what would somebody type who needs this paper but does not know it exists?” Those are different questions and they produce different lists.

The Rule Here

This agriculture and nutrition journal asks for 3 to 6 keywords, placed immediately after the abstract, and most other journals in the field ask for something similar. Fewer than three wastes reach; more than six is usually a sign that the author has not decided what the paper is about.

Four Slots Worth Filling

A useful way to build an agriculture and nutrition journal keyword list is to cover four different angles, so the paper is reachable from four directions.

Slot	Example terms
Subject or intervention	biofortification, integrated nutrient management, complementary feeding
Crop, food or organism	pearl millet, finger millet, cowpea, fermented foods
Outcome measured	micronutrient status, grain yield, dietary diversity, shelf life
Population or setting	school children, rainfed agriculture, tribal households, semi-arid tropics

Four slots, four to six terms, no overlap with the title. That covers a searcher coming from the intervention, from the commodity, from the outcome and from the context.

A Worked Example

Title: Iron and zinc content of biofortified pearl millet under two irrigation regimes.

Wasted list: pearl millet, iron, zinc, irrigation, biofortified pearl millet. Every one of these is already in the title, so the list adds nothing at all.

Working list: biofortification, micronutrient density, rainfed agriculture, food composition, Pennisetum glaucum, water stress.

The second list reaches a reader searching for biofortification across crops, one searching by scientific name, one working on water stress, and one compiling food composition data — none of whom would have found the paper through the title alone.

Where to Find the Right Terms

Your own reference list. Take the ten papers closest to yours and note the keywords they used. Those are the terms your community actually searches.
AGROVOC — the FAO's multilingual agricultural thesaurus, which gives the standard term for a concept.
MeSH — for the nutrition and health side, the standard vocabulary used by biomedical databases.
The scientific name — if the title uses the common name, put the binomial in the keywords, and the reverse if the title uses the binomial.
Your own search history. What did you type while looking for related work? Somebody else will type the same thing.

A Second Example, From the Nutrition Side

Now the same exercise on a nutrition journal paper. Title: Dietary diversity and anaemia among adolescent girls in two blocks of southern Tamil Nadu.

Wasted list: dietary diversity, anaemia, adolescent girls, Tamil Nadu. All four are in the title.

Working list: haemoglobin, iron bioavailability, 24-hour recall, food frequency questionnaire, rural nutrition, micronutrient deficiency.

Consider who each term reaches. Haemoglobin catches clinical readers who do not use the word anaemia in searches. The two method terms catch researchers looking for studies that used the same instrument, which is how method comparisons get built. Iron bioavailability catches the mechanism literature. Rural nutrition catches programme people rather than academics.

None of those readers would have arrived through the title. That is six extra doors for the cost of ten minutes' thought, which is the best return available anywhere in the manuscript.

Terms to Leave Out

Anything already in the title — the single biggest waste
Generic words — study, analysis, research, investigation, effect
The journal name — it is already attached to the record
A country on its own — “India” matches too much to help anyone; “semi-arid India” or a state name is usable
Invented phrases — a term nobody else uses is a term nobody will search
Abbreviations — write them out; a searcher may not use the same short form

Singular or Plural, Hyphen or Not

Modern search engines handle both, so this matters less than it did. Two practical habits: follow the form used by the papers in your own reference list, and be internally consistent. Where a hyphenated term is standard in the field, keep the hyphen.

Do not list both forms of the same word to fill slots. “Micronutrient, micronutrients” is one keyword with a wasted slot next to it.

Keywords Are Not an SEO Exercise

It is worth saying plainly, because advice written for websites leaks into advice for nutrition journal papers. Stuffing a keyword list with popular terms that your paper does not address does not raise you in search results; it brings the wrong readers, who leave immediately, and it irritates reviewers.

The reader you want is the one who needs precisely your paper. Six accurate terms serve that reader better than six fashionable ones, and an agriculture and nutrition journal editor will ask you to change a list that promises something the paper does not deliver.

A Two-Minute Check

Count them — between 3 and 6?
Cross out any term already in the title. How many are left?
Do the remaining terms cover subject, commodity, outcome and setting?
Would each term be typed by a real searcher?
Search two of them in Google Scholar — do papers like yours come up?
Any abbreviations, generic words or invented phrases to remove?

Step 5 is the one worth doing and the one nobody does. It takes thirty seconds and it is the only check that tests the list against the real world rather than against your own intentions. If searching your own keyword returns nothing resembling your work, it is the wrong keyword.

Where Keywords Fit in the Bigger Picture

Keywords are one of four things that decide whether your nutrition journal paper is found, and they are the only one you can improve in ten minutes.

The title — carries the most weight, and is fixed once published
The abstract — indexed in full, which is why the numbers in it matter
The keywords — the free extra doors described above
Where the journal is indexed — outside your control once you have chosen where to submit

A well-chosen keyword list cannot compensate for a vague title or an abstract with no numbers in it. What it can do is reach the reader who searches from an angle your title does not cover, and in a specialised field that is often the reader who cites you.

Give the list the same ten minutes you would give a figure caption. It is the last part of the manuscript most authors think about and one of the first parts a database uses.

Frequently Asked Questions

How many keywords does this agriculture and nutrition journal require?

Between 3 and 6, placed immediately after the abstract. Fewer than three limits how the paper can be found; more than six usually means the list has lost focus.

Should keywords repeat words from the title?

No. Databases already index the title, so a keyword that repeats it adds no reach. Use the slots for terms a searcher might use that the title does not contain.

Should I use the scientific name or the common name?

Use whichever the title does not. If the title says pearl millet, put Pennisetum glaucum in the keywords, and the reverse if the title carries the binomial. Readers search both ways.

Can I use a phrase rather than a single word?

Yes, and short phrases are often better. “Dietary diversity score” or “integrated nutrient management” are how people search. Avoid phrases longer than four words, which nobody types.

Do keywords affect citations?

Indirectly. They affect whether the right people find the paper, and papers that are found are more likely to be cited. They do nothing for a paper nobody needs, and they cannot rescue one that is hard to find because the abstract is vague.

Can I change keywords after publication?

Not normally. Once an article is published no changes are made, so the keyword list is fixed at proofreading — which is the last practical moment to look at it properly before it becomes permanent.

Related Guides

Where keywords fit with the rest of the front matter:

Created by Farhan Qureshi • 10 Aug 2026