Ratoon Yield & Plan When To Replant
Ratoons sugarcane
Enter plant-crop yield, expected decline per ratoon and number of ratoons to see each ratoon's yield, the total cycle yield and the average per year — so you know when to replant.
Plan your ratoon cycle
Next: expect 244 t total over 3 cycles; replant once the ratoon yield (now 64 t) drops below your break-even.
Decline rates vary by crop, ratoon management, gap-filling and nutrition; well-managed sugarcane/banana ratoons decline less than neglected stands.
Ratoon yield — key facts
- Ratoon
- regrowth from stubble, no replant
- Decline
- ≈ 10–25% per ratoon
- Ratoon 1
- plant × (1 − decline)
- Cycle yield
- plant + all ratoons
- Replant after
- 2–3 ratoons typically
- Common crops
- sugarcane, rice, sorghum, banana
- Saves
- seed & land-prep cost
- Privacy
- Runs in your browser; nothing uploaded
Ratooning is cheap to start but fades with every cut
Ratooning lets you harvest a second, third or fourth crop from the same stubble without buying fresh seed or preparing the land again — the roots are already there, so the regrowth comes away fast and cheap. The catch is that each successive ratoon yields less than the one before, commonly 10–25% lower, as stools age, gaps open up and pests build in the field. The decline compounds, so by the third ratoon yield can be far below the original plant crop.
This tool gives the total cycle yield, each ratoon's yield, the average per year and the final ratoon's yield from your plant-crop yield, decline rate and number of ratoons. Use it to see when the extra ratoon stops paying and a fresh replant makes more sense, and to weigh better stubble management. Pair it with the Sugarcane Seed Rate, Crop Yield Estimator and Harvest Index tools for a full picture.
Time the replant
See when the next ratoon stops paying.
Track the decline
Watch yield fall across each ratoon.
Compare scenarios
Test decline rates and ratoon counts.
Plan the season
Average per year guides cropping plans.
Frequently Asked Questions
What is a ratoon crop?+
A ratoon is the regrowth that comes up from the stubble and roots after a crop is harvested, without replanting. Crops like sugarcane, sorghum, rice and banana are commonly ratooned — you cut the plant crop, let the stools sprout again, and harvest the regrowth as the first ratoon, then the second, and so on.
Why does ratoon yield decline each cycle?+
Each successive ratoon usually yields less than the plant crop — commonly a 10–25% drop per ratoon. Vigour falls as the stool ages, gaps appear where stools die, pests and diseases build up in the field, and soil fertility is drawn down. The decline compounds, so the third or fourth ratoon can be well below the original crop.
How is total cycle yield calculated?+
Start with the plant-crop yield, then apply the decline percentage for each ratoon: ratoon 1 = plant × (1 − decline), ratoon 2 = ratoon 1 × (1 − decline), and so on. The total cycle yield is the plant crop plus every ratoon added together, and the average per year is that total divided by the number of seasons.
How many ratoons should I take?+
Because yield falls each time, most growers take only 2–3 ratoons before ploughing out and replanting. The break-even point is where the extra ratoon yields so little that a fresh plant crop — despite its seed and land-prep cost — pays better. This calculator's per-ratoon and average figures help you spot that point.
What are the advantages of ratooning?+
Ratooning saves the cost of seed material (cane setts, suckers, seed) and land preparation, and the regrowth establishes faster than a new crop because the root system is already there. That earlier harvest and lower establishment cost is why ratooning stays profitable for the first one or two cycles even as yield slips.
How can I lift ratoon yield?+
Good stubble management is key: cut stubble low and clean, remove trash or manage it as mulch, gap-fill dead stools quickly, and give the ratoon prompt fertiliser, irrigation and pest control. A well-managed ratoon can hold yield far better than a neglected one, stretching the profitable life of the field.
Which crops are most often ratooned?+
Sugarcane is the classic ratoon crop, often taking 2–4 ratoons. Sorghum and some rice varieties are ratooned for a quick second harvest, and banana plantations run on successive ratoon cycles from suckers. The same yield-decline logic applies to all of them — only the typical decline rate differs.
What decline percentage should I use?+
If you have field records, use your own measured drop between the plant crop and the first ratoon. Without records, 10–15% is a reasonable starting point for a well-managed crop and 20–25% for poorly managed or older fields. Adjust the input and watch how the total and average change.
Are the figures exact?+
They're planning estimates. Real ratoon yields vary with variety, season, soil, water and how well the stubble is managed, and the decline is rarely perfectly constant. Use the figures to compare scenarios and decide when to replant — re-check against your own harvest records and adjust each season.