Haute Lumière
Commerce · IV.03 · MMXXVI · daylight
For the executive with agricultural supply in the P&L — a food manufacturer, a retailer, an ingredient trader, an agricultural lender, a fund with farmland in the book. Applied to a business unit, a board paper and a covenant. The language of the firm, without apology, and the places where your own numbers already support the move.
You have a line in your accounts called agricultural raw material, and it has three properties your other input lines do not have.
It is the only input whose supplier's productive asset can be made to appreciate. A press wears out; a soil does not have to. Broadbalk's manured plot has been rising for a hundred and eighty years and is at roughly 85 t C/ha against 28 at the start.
It is the only input whose volatility you can reduce at the source. More soil organic matter means more plant-available water, which is why the Rodale Farming Systems Trial measures its organic systems running about 31 percent ahead of conventional in drought years. If your procurement volatility is dominated by weather — and in most food businesses it is — that number is a hedge with an agronomic mechanism instead of a counterparty.
And it is the only input where a three-year cash gap stands between your suppliers and a materially better asset. Under the US National Organic Program land must be clean for 36 months before an organic harvest counts. Three years of organic yields at conventional prices is $810 a hectare in the chapter's model — $324,000 on a 400-hectare farm. Your suppliers are not unpersuaded. They are unfunded, and financing that gap is a treasury activity you already know how to do.
This workbook is about doing exactly that, and about not overpaying for carbon while you do it.
Exercise 1.1 — The volatility decomposition (one week, with FP&A)
Take five years of landed cost for your largest agricultural input and decompose the variance: price, yield, freight, currency, quality rejection. Then split the yield component by supplier region and ask one question of it — in the worst two years, which suppliers moved least?
You are looking for the same pattern the long trials show: the suppliers whose soils carry more organic matter should be the ones whose volumes hold in the dry season. If you have five years of volume data by supplier, you already have this finding sitting in a table nobody has run.
Write it as one figure: the standard deviation of delivered volume, best quartile of suppliers against worst quartile. That figure is your business case and it is free.
Exercise 1.2 — The five places, in an agricultural supply chain (one week)
| The formal place | Where to look in your business |
|---|---|
| Waste streams | Rejection rates by supplier, and what drives them |
| Retention | Which growers have been with you longest, and why |
| Assets past schedule | Which fields keep yielding above their soil-map class |
| Supplier relationships | Which grower you would never re-tender, and what you get |
| Quiet pride | The agronomist in your business who already knows all of this |
That last row is not filler. In most food companies there is one agronomist who has been saying this for a decade and has never been asked into a capital meeting. Find them in week one. They will hand you the next three exercises.
Exercise 1.3 — Count the strata, not the hectares (3 days)
Take your top ten supplying farms, obtain the soil series map for each, and count distinct soil-series strata across the whole group. Do it for the group, not the farm.
You now have the single number that determines whether soil carbon is an asset or a cost in your supply chain, and almost none of your competitors have computed it. Five strata across a 3,000-hectare group is $12,500 of paired verification — $4.17 a hectare against $132 a hectare of carbon value. The same work on one 65-hectare farm alone costs $107.34 a tonne against a $30 price.
Exercise 2.1 — What the carbon is actually worth (half a day)
Do this before anyone in your organisation announces a target, because the announcement is very hard to walk back.
rate 0.30 t C/ha/yr (Minasny 0.2–0.5; Lal 0.05–0.76)
over four years 1.20 t C/ha
as CO₂e 1.20 × 3.6667 = 4.40 t CO₂e/ha
gross at $30/t 132.00 USD/ha over four years
less MRV at co-op scale 4.17 USD/ha
less a 22 % buffer
net 22.45 USD/t CO₂e, or 24.70 USD/ha/yr
Twenty-five dollars a hectare a year. Write that number at the top of the board paper and never let anyone in the building quote a soil carbon figure without it. It is enough to pay for the measurement and the agronomy support. It is not enough to pay for the transition, and a company that has told its board otherwise will spend two years correcting the record.
Exercise 2.2 — The transition facility, sized (one day)
transition shortfall 350 + 270 + 190 = 810 USD/ha
plus 15 % contingency 810 × 1.15 = 931.50 USD/ha
on 400 ha = 372,600 USD
mature gain at a 32 % premium = 236.50 USD/ha/yr
at a 75 % sweep = 177.37 USD/ha/yr
plus net carbon = 202.07 USD/ha/yr
repayment at 8 % = 5.98 yr → year 6
total term 3 + 6 = 9 years
Coverage in a mature year: 202.07 / (931.50 × 8%) = 2.71× on interest alone.
The deciding ratio, and it belongs on the front page:
236.50 + 24.70
---------------- = 28.0 % against an 8 % cost of capital
931.50
Exercise 2.3 — The premium sensitivity (half a day)
This is the number your CFO will go to, so bring it before they ask. The break-even premium for this cost structure is 13.7 percent. Crowder and Reganold measured actual global premiums of 29 to 32 percent. So the structure survives a premium compression of more than half, and fails below that.
Model three cases and put all three in the paper: premium holds at 32 percent, premium halves to 16, premium collapses to 10. The third case is the one that earns you the credit committee's attention, because you brought it and they did not have to find it.
Exercise 2.4 — The honest negative, priced (half a day)
Four of them, each with a number, and each belongs in the risk section written by you rather than in a question from the floor:
Exercise 3.1 — Choose the aggregating entity (one week)
The measuring entity must sit above the farm and it must not be paid on volume sold. Four candidates, and you probably have one already:
| Candidate | Strength | Watch for |
|---|---|---|
| Your own procurement arm | You control the data | Verifier independence — contract it out and publish |
| An existing growers' co-operative | Legitimacy with farmers | Governance capacity; Ostrom's principles are the checklist |
| Your agricultural lender | Balance sheet and covenant machinery | Will want the land as security; refuse it |
| A catchment or watershed body | Natural stratification boundaries | Slower; often the best long-run answer |
Exercise 3.2 — Draft the facility (one week)
The terms, in the order a credit committee reads them:
Exercise 3.3 — The balance sheet conversation (half a day, month one)
Two entries, and have this conversation with the auditors before the board paper, not after.
The soil. Capitalise transition cost as a land improvement and set the depreciation schedule against the improvement's measured life rather than a default. An asset whose productive capacity is rising should not be depreciating on a schedule that assumes it is falling. This is a conversation about useful economic life, which your auditors have every year.
The carbon. Inventory at lower of cost or market, with the 22 percent buffer as a contra-account, and the reversal hazard disclosed. Do not recognise a credit until it is verified. A verified tonne is an asset; an expected tonne is a forecast wearing an asset's clothes, and the difference has ended careers in adjacent markets.
Exercise 3.4 — The board paper (one week)
Eight pages, in this order, and the order is the argument:
Exercise 4.1 — Put the soil metric in the standing pack (one week)
Anything reviewed monthly persists; anything reviewed by exception does not. The metric to add is not tonnes of carbon. It is hectares under four-year-or-longer rotation, as a share of supplied area — because it is cheap, it is unambiguous, it moves monthly, and it correlates with everything you actually care about.
Exercise 4.2 — Name the second owner (3 days)
One person is a hobby; two is a practice. Recruit the second owner by giving them the credit for the first result, and make sure one of the two sits in finance rather than sustainability. A soil programme owned entirely by the sustainability function is a programme with a sunset date nobody has told you about.
Exercise 4.3 — Start one Marsden block (one season)
Fund one supplier to lengthen one rotation from two years to four. No certification, no premium, no carbon contract. Measure yield, nitrogen purchased and herbicide purchased. Davis and colleagues measured corn up 9 percent, soybean up 12 percent, synthetic nitrogen down 86 percent and herbicide down 88 percent at comparable profit.
This is the cheapest experiment in the whole programme and the only one that needs no counterparty. If nothing else in this workbook survives your budget cycle, do this one.
Exercise 4.4 — The delight exercise (one afternoon)
Take the board sponsor to a field in August of a dry year, to one block on the longer rotation and one on the short. Take a spade. Say nothing about carbon.
The argument you have been making in figures for ninety days is visible in the ground and it takes about four seconds. Let the ground make it. Every executive who has done this has come back and asked a better question than the one they went with.
You announce a tonnage target before you compute the rate. The correction is public and it costs more than the programme. Compute first, announce second, announce hectares rather than tonnes.
You buy carbon priced on the stock. A contract may only pay for the difference against the counterfactual — 0.439 t C/ha/yr at Rodale, not the 0.634 the organic-animal system shows alone. The larger figure includes 0.195 that the conventional control was building anyway.
You secure the facility on land. You will get the covenant and lose the growers.
You let the measurement arm earn a commission on credits sold. Everything downstream becomes unbelievable, including the parts that were true.
You size the pilot on one farm. Below the aggregation threshold the numbers cannot come out, and the programme will be cancelled for producing an ambiguous result that was ambiguous by construction.
You model a flat sequestration rate for twenty years. It saturates. Model the decay or the year-twelve review will be a surprise.
| Day | Action | Artifact |
|---|---|---|
| 1–10 | Volatility decomposition by supplier region | The one-figure finding |
| 11–20 | Find the agronomist; count the soil strata | The stratification map |
| 21–30 | Compute the carbon at $24.70/ha/yr and circulate it | The ceiling note |
| 31–45 | Size the facility; run the three premium cases | Facility model |
| 46–55 | Choose and approach the aggregating entity | Term sheet |
| 56–65 | Auditors: land improvement and buffer contra-account | Accounting memo |
| 66–75 | Board paper, eight pages, negatives written by you | The board paper |
| 76–85 | Fund one Marsden rotation block, no premium, no label | The signed grower agreement |
| 86–90 | Soil metric into the standing pack; name the second owner | The standing metric |