Observations. The scale runs from −100 (mostly wheat) through 0 (both equally) to +100 (mostly rice). The red line drawn across the map splits India almost cleanly in two: the north and west are negative (wheat) and the east, north-east and south are positive (rice). The values printed on the map are:
| Wheat side (negative) | Value | Rice side (positive) | Value |
|---|---|---|---|
| Rajasthan | −93 | Manipur | +100 |
| Haryana | −81 | Nagaland | +99 |
| Punjab | −78 | Mizoram | +97 |
| Madhya Pradesh | −60 | Tripura | +96 |
| Delhi | −45 | Sikkim | +86 |
| Gujarat | −37 | Lakshadweep / Puducherry | +80 each |
| Uttar Pradesh | −30 | Kerala | +79 |
| Himachal | −19 | Andaman & Nicobar | +65 |
| Uttarakhand | −18 | Goa | +57 |
| Maharashtra | −15 | Jammu & Kashmir (undivided) | +41 |
| Jharkhand | +45 | ||
| Bihar | +3 |
(i) Karnataka sits in the southern rice belt, hemmed in by Goa (+57), Kerala (+79) and the strongly rice-eating states of the far south, with only Maharashtra (−15) leaning the other way. Its shade matches the moderate-rice group, so a sensible guess is somewhere around +50, say between +40 and +60 — clearly a rice state, but not as one-sided as Kerala or the north-east.
(ii) Top 5 rice states (of the values printed): Manipur (+100), Nagaland (+99), Mizoram (+97), Tripura (+96), Sikkim (+86) — all in the north-east.
(iii) Top 5 wheat states: Rajasthan (−93), Haryana (−81), Punjab (−78), Madhya Pradesh (−60), Delhi (−45) — all in the north-west.
(iv) More or less balanced (values close to 0): Bihar (+3), Maharashtra (−15), Uttarakhand (−18) and Himachal Pradesh (−19). In these states people eat a good deal of both grains.