Topic Selection & Fit (agsy-topic-selection)

Agricultural Systems publishes the systems analysis of agricultural systems. The bar is not "a new result for crop X" — it is "a systems question about interactions and trade-offs." Use this skill to pressure-test fit before you invest, and to keep a field trial from being mistaken for a systems paper.

When to trigger

• Choosing among possible projects or framings for an AgSy submission
• A reviewer/colleague said the paper "is just a field trial" or "lacks a systems angle"
• Deciding between a research paper and a short communication
• Considering a perspective (forward-looking opinion) or a comment on a published paper

The AgSy fit test

A strong AgSy paper usually clears all four:

1. A real systems question. The object is interactions — among components (crop–soil–livestock– economics), across hierarchical levels, between agriculture and other land uses, or with the natural/social/economic environment. If nothing interacts, it is not a systems paper.
2. Whole-farm to food-system scope (preferred). AgSy gives preference to whole-farm and landscape-level issues. A plot-level result needs to be scaled or embedded in a larger system.
3. Integrated modelling and trade-offs. Conceptual + empirical + dynamic / bio-economic modelling; the analysis surfaces trade-offs and synergies, not a single optimal number.
4. Decision relevance. The result informs a design, management, or policy choice (see agsy-impact-and-implications).

Scale & system-boundary framing (state your system explicitly)

Article-type choice

• Research paper — full systems study, ~8,000 words (no hard cap; stay near it).
• Short communication — one crisp systems result, ~4,000 words. Do not pad it into a paper.
• Perspective — a forward-looking argument about agricultural-systems science, ~2,000 words, rapid review (see agsy-review-process).
• Comment — a focused response to a published AgSy paper, ~1,000 words.
• Review — usually method-application focused rather than descriptive synthesis; consult editors first where the Guide requires it.

Anti-patterns

• A single-factor field trial with no interactions, model, or trade-off (off-fit — send to an agronomy journal)
• "First time simulated in country X" as the whole contribution (descriptive, not a systems advance)
• A model demo with no agricultural-systems question or decision payoff
• Choosing research-paper length out of habit when a short communication would land harder

Fit verdict table (how the four-part test maps to a decision)

Score the project against the four fit criteria, then read off the verdict.

Sibling-venue routing (where a near-miss belongs)

When a project lands near the boundary, route it deliberately:

• Plot-/agronomy-level result, one crop, no system → a field-crops/agronomy journal, not AgSy.
• Economics-first decision with light biophysics → an agricultural-economics outlet; AgSy expects biophysical and socioeconomic integration.
• Policy synthesis with no model → a food-security/policy journal; AgSy wants the systems analysis.

Worked micro-example (illustrative)

A team has trial data showing a legume intercrop raises maize yield:

• Systems question? As "intercrop raises yield" — no. Reframed as "how the legume–maize–soil-N interaction shifts the whole-farm yield–nitrogen-leaching trade-off under variable rainfall" — yes.
• Scope? The plot-level trial is embedded in a whole-farm bioeconomic model.
• Trade-offs? Scenarios span intercrop share 0–50%; the gross-margin vs. N-leaching Pareto front is the headline, not a single "best" share.
• Decision relevance? A farmer choosing rotation intensity acts differently. Verdict: strong AgSy fit.

Calibration anchors

• AgSy's remit centers on interactions, hierarchical levels, trade-offs, and integrated modelling at farm/landscape/food-system scale; live-check the current aims-and-scope statement before final submission advice.
• The article-type lengths are guidelines, not hard caps; live-check the Guide before final upload.

Output format

【Question】one sentence (state the interaction / trade-off)
【System & boundary】components + hierarchical level(s) + scale
【Modelling approach】conceptual / empirical / dynamic / bio-economic
【Decision relevance】who acts differently if this is true
【Article type】Research paper / Short communication / Perspective / Comment / Review
【Fit verdict】strong / needs reframing / off-fit (why)
【Next】agsy-literature-positioning

Supplementary resources

• ../../resources/external_tools.md — systems models and data sources by scale
• ../../resources/official-source-map.md — AgSy aims, scope, and article types