Reading the Land You Actually Have · Lesson 02
The Seven Principles as Constraints, Not Slogans
Settles what each principle actually forbids and permits on South African veld, including the seventh that SA conditions force.
By the end of this lesson you can
- Restate each principle as a test that a specific management decision passes or fails
- Identify two places where two principles genuinely conflict on a South African farm
- Explain why rainfall variability rather than rainfall average is the seventh principle
#How the diversity slogan kills turkeys
Picture a smallholding outside Meyerton with a laying flock on range. The owner adds turkeys, because diversity is one of the principles and turkeys fetch more than chickens. Same ground, same brooder shed. Within weeks the turkeys are dying of blackhead — histomonosis, carried in the eggs of Heterakis gallinarum, a caecal worm chickens shrug off and turkeys do not.
She did not break a principle. She applied one, as a slogan — diversity is good — instead of as a test. For turkeys and chickens the regenerative answer is the opposite of the slogan: separate the species in time and space, and do not brood them together. Our research found no South African trial data on this pairing, so treat it as the long-standing practitioner rule it is rather than a measured local result — but it is not one you want to test personally.
#Six principles, restated as tests
Here is each principle written as the question you ask of a decision, with a South African way of failing it.
| Principle | The test a decision must pass | Failing it here looks like |
|---|---|---|
| 1. Context first | Does this fit the land, climate, market, family and skills I actually have? | Buying a 20-camp fencing plan for arid veld. A simulation of arid SA rangeland found that veld receiving under 250 mm gained neither ecologically nor economically from a multi-camp system (Beukes et al. 2002, cited in Hawkins) |
| 2. Minimise disturbance | Does this break soil, chemistry or biology that was doing a job? | Ploughing veld. Across 27 South African soils with 1–85 years of cropping, soil organic carbon in the top 20 cm fell 10–75%, averaging about 45% (du Preez et al. 2011) |
| 3. Keep the soil covered | Will there still be litter and standing residual on this camp when I take the animals out? | Grazing a Highveld camp bare in August, then meeting the first spring thunderstorm with naked soil |
| 4. Keep a living root in the ground | Does the plant get to rebuild before I defoliate it again? | Re-grazing regrowth. In Themeda triandra, more than five defoliations a year severely reduced yield, and relative growth rate after defoliation is not sustained beyond about 14 days (Oecologia) |
| 5. Maximise diversity | Which specific organisms am I adding, and what do they do to each other? | Turkeys onto chicken ground. Also: eradicating every shrub, when the intermediate Seriphium plumosum density of around 1 500 plants/ha carried the highest plant diversity measured, not the open grassland at 24/ha (Graham et al. 2020) |
| 6. Integrate animals | Is the animal applying disturbance and cycling nutrients where I want it, or where it happens to stand? | The sacrifice zone around the water trough — the piosphere is where South African grazing damage measurably lives |
Written this way they stop being aspirations and become things you check on a Tuesday afternoon with a notebook.
#Principle 3 in South Africa means residual, not "cover" in the abstract
Overseas material talks about armour and mulch. In summer-rainfall South Africa the operational form of principle 3 is a single decision: the height at which you take the animals out of the camp.
The capacity map you will be measured against already assumes you leave most of it. DALRRD builds a 40–50% utilisation factor into the published grazing capacity (background document). Elsenburg's plant-level version is stricter: no more than 40% of an individual plant in a season (Infopak). The field version most Highveld farmers actually use is the beer can: never grazed higher than a can standing up, never lower than the can lying on its side.
Work what that costs and what it buys. Take a 20 ha Highveld camp carrying about 3 t DM/ha — the bottom of the 3–4 t DM/ha fuel load SA Grain says a veld burn needs to carry (SA Grain). Our research found no sourced standing-crop figure for a Highveld camp, so take 3 t as a round number for the arithmetic and measure your own. That is 60 000 kg of dry matter standing.
- At 45% utilisation, you may take 27 000 kg.
- A herd of 30 cows eating roughly 12 kg DM/day each (the ARC figure for a 450 kg small-frame cow with a calf at foot) demands 360 kg a day.
- 27 000 ÷ 360 = 75 grazing days.
Push to 70% utilisation and the same camp gives you 42 000 kg, or 117 days. You have found 42 extra grazing days without buying anything. You have also just spent them: the last 25% of that grass was the litter that armours the soil, the leaf area that lets the plant regrow without drawing down reserves, and the top of the sward that keeps grazing animals' mouths above the bottom few centimetres where infective Haemonchus larvae concentrate.
#Two places where the principles genuinely fight
Anyone who tells you the principles form a consistent set has not tried to apply them to a fodder gap.
Conflict one: planted pasture against principle 2. Establishing Eragrostis curvula or Digitaria eriantha means ploughing. Digitaria in particular needs a fine, firm, well-prepared seedbed, because the seed is fluffy and hairy and will not flow through planting equipment — the standard advice is to mix it with superphosphate or sawdust and to roll before and after seeding (SA Grain). That is tillage, and tillage is exactly what costs 45% of the soil carbon in the du Preez dataset.
There is a defensible answer and it is a judgement, not a principle: a small, high-output planted block that takes winter pressure off a large area of veld can be net positive for the veld as a whole. Much regenerative teaching hides this trade-off rather than naming it. We name it now so that when Module 5 works through the pasture decision you already know it is a fight and not a free lunch.
Conflict two: diversity against the specific pairing. Turkeys and chickens is the sharp case, because the harm runs through a parasite one species tolerates and the other does not, and the correct regenerative answer is the opposite of the slogan — separate the two species in time and space, and never brood them together. It is not the only case. Adding goats to Albany Thicket is another: goat overbrowsing there causes near-permanent thicket collapse. Diversity is a good default and a bad rule.
A third tension runs through the rest of the course: principle 6 asks you to integrate animals, and the animals arrive carrying remedies. Macrocyclic lactone parasiticides pass largely unchanged into dung and are toxic to the beetles that bury it. The South African review of record ranks them doramectin > ivermectin > eprinomectin > moxidectin for harm to dung fauna, and reports about 75% of doramectin residue still present at 180 days, while ivermectin residues become undetectable within roughly a fortnight; drought amplifies the damage (Jacobs & Scholtz, OJVR 2015). "The drench is out of the animal" and "the drench is out of the dung" can be months apart. Which product at what rate is a label-and-veterinarian question and appears nowhere in this course; whether, when and which animals belongs to principle 6.
#The seventh principle: manage for the drought you have not had yet
The six imported principles were written where rainfall is reasonably reliable. South Africa adds a seventh, and it is the one that decides whether a farm survives a decade: it is rainfall variability, not rainfall average, that breaks farms.
A Highveld farm averaging 700 mm does not get 700 mm. It gets 450 mm, then 900 mm, then 620 mm, then two consecutive years at 480 mm — and it is the pair of dry years, not the average, that empties the reserve and forces the sale. A stocking policy set against the average is correct in about half of all years and wrong in the half that costs money.
The operational form of principle 7 is a written trigger, set before the season, on three things: rainfall to date, veld condition and residual, and a calendar date. Module 6 builds it properly; what matters now is its shape, because it is the one place where every other principle is either protected or spent.
Write your version of that list this week, on one page, and put a date on it. Not because you will need it this year — because the value of a drought rule is entirely in having made it while you were calm.
#Check yourself
3 questions — answers explained as you go
-
1A farmer decides to plough 15 ha of veld and establish Digitaria eriantha to carry the herd through winter. Which statement best describes this decision in terms of the principles?
Why: Establishing planted pasture is tillage, and tillage is the single best-evidenced way to destroy South African soil carbon — 10–75% of it, averaging about 45%. Calling it "neutral" or "regenerative because it is perennial" launders a real cost. The defensible argument is a trade: a small, high-output block that removes winter grazing pressure from a large veld area may leave the whole system better off. That is a judgement about your context, and it has to be argued each time, not assumed. -
2Why is "keep the soil covered" taught in South Africa as a rule about grazing residual rather than as a rule about mulch or ground cover generally?
Why: Residual is where the principle becomes a decision someone actually makes. The capacity map already assumes 40–50% utilisation and Elsenburg's plant-level rule is 40% of an individual plant, so the numbers are published — but the reason it matters is that one exit height does three jobs at once: it leaves armour on the soil, it leaves leaf area for regrowth without drawing on root reserves, and it keeps grazing mouths out of the bottom of the sward where infective larvae sit. No law sets the height; you do. -
3A farm in the Nama-Karoo receives about 220 mm a year. The owner is quoted for a 24-camp electric fencing system on the strength of a workshop on high-density grazing. What does principle 1 require here?
Why: Context first is not a mood; it is a filter you run before you spend. A simulation of arid South African rangeland found no ecological or economic gain from multi-camp systems below roughly 250 mm, and a survey of working farms across a 150–850 mm gradient found little of the expected vegetation response to grazing density. The drier the veld, the weaker the case for intensification — which is the exact opposite of what most imported material implies, because most of it was written where rain is reliable.
Sources for this lesson
- DALRRD, Long Term Grazing Capacity Map for South Africa 2016 — background document — The 40–50% utilisation factor built into the capacity map, and the map's stated limits
- Western Cape Department of Agriculture (Elsenburg) Infopak — Basic guidelines to Veld Management, Overberg — 40% maximum utilisation of an individual plant; the destocking order; feed in a feedlot, never on the veld
- du Preez, van Huyssteen & Mnkeni 2011, South African Journal of Science — land use and soil organic matter, part 2 — Cultivating South African soils cost 10–75% of soil organic carbon, averaging about 45%
- Responses of Themeda triandra to frequent defoliation, nitrogen and water (Oecologia) — More than five defoliations a year severely reduced yield; relative growth rate not sustained past ~14 days
- Graham, Barrett & Brown 2020, Royal Society Open Science 7(4):192025 — Seriphium plumosum densification; intermediate density as the diversity optimum; state of the Grassland Biome
- Hawkins 2017, African Journal of Range & Forage Science 34(2) — meta-analysis of high-production grazing — No difference in basal cover, biomass or animal gain; the sub-250 mm finding from Beukes et al. 2002
- Jacobs & Scholtz 2015, Onderstepoort Journal of Veterinary Research — macrocyclic lactones and dung fauna — Toxicity ranking and residue persistence in dung; drought amplifies the harm to dung beetles
- SA Grain — top tips for burning veld (16 September 2020) — The two-objective burn rule, and the 3–4 t DM/ha fuel load used in the worked example
- SA Grain — Smuts finger grass (Digitaria eriantha), integrated crop and pasture systems part 3 — Establishment needs a fine, firm, well-prepared seedbed — planted pasture is tillage
- Le Roux & Smith, Grain SA, November 2014 — soil erosion in South Africa — Gauteng: 347 149 ha at high sheet-and-rill risk against 110 ha of mapped gully