Starting an Onion Farming Business in South Africa: Cultivars, Harvest Handling and Markets

Start with the buyer and planting window

An onion crop is planned backwards from the product the buyer wants. Bulb colour, size range, maturity, storage ability and packaging affect cultivar selection and marketing. A fresh-produce market, wholesaler, retailer and processor may accept different specifications. Ask about grades, bag sizes, delivery days and how rejected or unsold produce is handled. A high quoted market price means little if it applies to a grade the crop cannot consistently supply.

Location and planting time must suit the cultivar. Onion bulbing responds to day length, so seed chosen successfully for one area may be unsuitable elsewhere. The ARC onion production guidance explains the relationship between cultivar, growing conditions and day length. Use local agronomic advice and current supplier information to choose material for the intended planting window. A cultivar name alone is not a complete production programme.

Compare direct sowing with transplanting

Direct sowing and transplanting distribute cost and risk differently. Direct sowing requires accurate establishment, a suitable seedbed and careful early weed and moisture management. Transplanting adds nursery or purchased-seedling costs and handling work, but may suit an operation with the right labour and nursery arrangements. Compare the complete route to a sound plant stand rather than only the seed purchase price.

Allow for establishment losses without using them to excuse poor practice. Check seed documentation, lot identity, sowing equipment and the condition of planting material. Review emergence or survival at representative points across the field. Uneven establishment can produce uneven bulb size and complicate harvest and grading. Where a problem develops, investigate before adding more inputs to a crop that no longer has the expected commercial potential.

Organise water, labour and machinery together

Reliable water access is fundamental to an irrigated enterprise, but a water source alone is not enough. Delivery capacity, distribution uniformity, filtration, power and repair arrangements determine what reaches the crop. Check the system at its furthest points and during competing demand. Expansion should follow verified supply and infrastructure capacity, not simply the availability of another field.

Prepare a work calendar that identifies labour peaks. Establishment, weeding, lifting, handling and packing can compete for the same workers and transport. Clarify which activities will be contracted and confirm availability before the season. A contractor’s quoted price is useful only if the required service can be delivered in the relevant window. Keep machinery access and field conditions in mind when choosing bed layouts and harvest arrangements.

Protect value after lifting

Harvested onions still require management. Maturity, weather, curing, handling and storage condition influence how much of the crop remains saleable. Provide space and a process for separating damaged, wet or suspect bulbs from sound lots. Rough loading and unnecessary handling can destroy value after most production costs have already been incurred. Train the harvest team on the quality standard, not merely on the number of bags to fill.

Keep lot identity through curing, grading and dispatch. If one buyer reports poor keeping quality, the farm should be able to trace the affected load to its field and handling history. Lot records also reveal which cultivars and fields deliver the strongest net return. Combining everything into one undifferentiated stockpile makes both quality investigation and commercial learning harder.

Think in saleable bags, not only tonnes

Yield and price need compatible units. A field estimate in tonnes should be converted to saleable weight after grading, then to the actual pack mix. For illustration, 12 tonnes of saleable onions would fill 1,200 bags at 10 kg net each, before packaging damage or overfill. If part of the crop is sold in smaller packs or bulk, calculate those portions separately. Do not count the same crop in more than one sales channel.

Fresh-produce prices move, and the farm cannot assume that the best price observed will apply to its whole harvest. Compare several plausible selling outcomes and allow for charges, transport and payment timing. A supplier invoice, market settlement and bank receipt describe different parts of the transaction. Reconcile them so the farm knows the actual net proceeds of each consignment.

Storage should have a clear commercial purpose. A later higher price may be offset by weight loss, rejection, electricity, handling and the cash tied up. Review the condition of each lot and the evidence for holding it. The useful question is how much additional net cash storage is likely to produce, not whether a future headline price looks more attractive than today’s quote.

Preparing a Field Plan

Give each field or block a stable identifier and record soil history, cultivar, seed lot, planting date and intended buyer. Link soil and water analysis to the field. The plan should show how irrigation, machinery and labour reach the crop when needed.

Check that the cultivar and planting window suit the location before ordering seed. A small trial is useful when changing material or establishment method. Keep trial results identifiable through grading and sale, because field appearance alone does not show commercial performance.

Calculating Establishment Requirements

Use target established population, germination and expected field establishment to calculate seed needs. Keep the units clear: seeds, kilograms of seed, seedlings and planted hectares are not interchangeable. Allow for paths and unplanted areas when translating bed spacing into a field population.

For an illustrative calculation, a target of 700,000 plants with 90% germination and 90% establishment after germination requires about 864,200 seeds. This is a worked method, not a planting recommendation or a guarantee of field emergence.

Checking Irrigation Uniformity

Inspect wetting patterns and pressures across the field, including the furthest outlets. Record blocked lines, leaks and areas that remain too wet or too dry. Compare moisture observations with crop appearance and recent applications. A correct total water volume can still be badly distributed.

Keep a pump and filter maintenance routine and a record of interruptions. Identify critical spares and repair contacts. Review water supply before expanding planted area, and protect the established crop if capacity becomes constrained.

Scouting and Recording Decisions

Walk a repeatable route that includes field edges, low spots and representative interior areas. Record growth stage, weed pressure, symptoms and the distribution of affected plants. Photographs are more useful when linked to a date and field location.

Distinguish observation from diagnosis. Seek competent advice where the cause is unclear, then record the action and result. Repeated treatment without improvement should trigger reassessment, not automatic repetition at a higher rate.

Preparing for Harvest

Estimate when each block will be ready and confirm labour, lifting equipment, curing space, packaging and transport. Inspect neck maturity and bulb condition. Do not let the calendar alone determine lifting when weather or crop condition has changed.

Brief workers on avoiding cuts, bruises and sun damage. Keep wet, damaged or suspect lots separate. Handling losses often occur after the crop has incurred nearly all its growing costs, making simple supervision especially valuable.

Measuring Saleable Yield

Record harvested quantity, rejected bulbs, packed quantity and dispatches by lot. Reconcile any stock remaining in curing or storage. A yield measured before grading should not be compared directly with an invoice based on saleable packed produce.

For an illustrative lot, 10,000 kg harvested less 1,000 kg rejected leaves 9,000 kg before further storage or handling loss. That is a 90% pack-out. At 10 kg net per bag it provides 900 bags, assuming no additional loss or overfill.

Deciding Whether to Store

Assess cultivar, neck closure, damage and disease before allocating a lot to storage. Compare an immediate sale with a later sale after expected shrink, rejection, handling, energy and finance. Use realistic remaining saleable weight in the comparison.

A lot worth more per kilogram later can still return less cash if losses are high. Review stock condition regularly and release vulnerable lots promptly. Keep a written reason for holding stock so the decision can be evaluated after sale.

Reconciling Buyer Settlements

Match each consignment to its delivery record, grade, pack count and agreed terms. Check commission, market charges, transport, returns and payment. Convert bag and tonne prices to the same unit before comparing channels.

Record claims with the lot and the evidence available. Investigate whether the issue began in the field, curing, packing or transport. Use the result to correct the process and maintain a fair relationship with the buyer.

Preparing a Field Production Record

Create a separate record for each field or planting block. Include its area, recent crop history, soil results, cultivar, seed or seedling lot, planting date and irrigation arrangement. Record changes as they occur rather than reconstructing the season from memory at harvest. Where a field contains different planting dates or cultivars, identify the subdivisions so quality and yield can be traced to the correct crop.

Record operations in a consistent form: date, task, area treated, material, quantity, responsible person and observations. Retain supplier documents and crop-protection application records with the relevant field information. These records support traceability, cost review and investigation of uneven results. They also help a relief manager understand what has already been done without relying on verbal instructions alone.

Use the field record to compare planned and actual costs. An expensive block may have required additional weed control, repairs or replanting rather than simply having careless management. Relate the expenditure to saleable output and quality. A high total yield is less useful if much of it is rejected, sold at a discount or lost before dispatch.

Checking Establishment Before Committing Further Inputs

Inspect emergence or transplant establishment systematically across the block. Include edges, high and low areas, different soil conditions and sections served by different irrigation lines. Record both the number and distribution of surviving plants. A reasonable average can conceal large gaps and overcrowded patches that will produce uneven bulb sizes and complicate harvesting.

Compare observations with the intended plant population and investigate the cause of poor establishment. Seed placement, crusting, moisture, seed quality, pests and transplant handling can produce similar visible gaps but require different responses. Obtain appropriate advice before committing to a treatment. Repeated application of inputs without identifying the problem can increase costs while leaving the underlying cause unchanged.

Evaluate replanting against the remaining suitable season, cultivar response, likely maturity difference and market requirements. A late replacement area may need separate management and harvesting. Record the decision and its expected cost. Where the stand is retained, revise expected saleable output and cash receipts rather than continuing to budget on the original population as though no loss occurred.

Estimating Saleable Yield and Pack Requirements

Separate field yield from saleable yield. Sample representative areas and assess the likely share of sound bulbs in each commercial grade. Allow for trimming, damaged bulbs, rejected material and handling losses using experience from comparable crops. Revisit the estimate as maturity approaches. An early visual impression of a strong crop is not a reliable substitute for a structured harvest estimate.

For illustration, a harvested quantity of 100 tonnes with 10% removed through grading leaves 90 tonnes for sale. If all saleable produce were packed in 10 kg bags, that would require 9,000 bags before allowing for damaged packaging or changes in customer requirements. The example shows why packaging should be based on saleable output and pack mix rather than total biomass or field appearance.

Confirm pack specifications with buyers before ordering large quantities. Bag strength, ventilation, labelling, net mass and pallet arrangements affect handling and acceptance. Check that scales are suitable and properly maintained. Underfilled packs damage trust and may breach requirements; habitual overfilling gives away saleable product and distorts yield and margin calculations.

Understanding the Market Settlement Statement

Read each statement from gross sales through to the amount payable. Identify quantities, grades, selling prices, commission, market charges, transport and other agreed deductions. Distinguish a price quoted per kilogram from one quoted per bag or tonne. Reconcile the units before comparing channels or entering results into management records.

An illustrative consignment of 1,000 bags selling at R40 per bag produces R40,000 gross sales. If agreed selling charges total R5,000 and transport costs R3,000, the remaining R32,000 equals R32 per bag before production and other business costs. A headline R40 price therefore cannot be treated as money available to cover farming costs in full.

Check whether all dispatched bags were sold, rejected, held or returned. Unsold stock needs a clear status and follow-up; it should not disappear into a difference between dispatch and receipts. Retain dispatch notes, delivery confirmation and settlement records together. Query discrepancies promptly and compare net returns over several consignments so an unusual day's market does not dominate the decision.

Testing Whether Storage Adds Value

Storage is a commercial choice as well as a physical process. Compare the net proceeds available now with expected later proceeds after storage losses, handling, electricity, finance and other additional costs. Only suitable, properly cured lots should be considered. A possible higher price does not compensate for a store that cannot maintain appropriate conditions or for bulbs already deteriorating.

Suppose 10,000 kg could be sold now at a net R5 per kg, producing R50,000. If storage leaves 9,000 kg saleable and adds R6,000 in costs, the later net selling price must exceed about R6.22 per kg to improve on the immediate sale. This example excludes other possible costs and risks; it demonstrates the effect of weight loss and extra expenditure on the required price.

Review stored lots regularly and keep their identity. Record condition, removals and available quantity so the expected benefit can be reassessed. Establish release decisions based on actual quality and market opportunities. Holding deteriorating onions in the hope of recovering past expenditure can increase the eventual loss and place neighbouring sound stock at risk.

Coordinating Harvest, Curing and Dispatch

Work backwards from the expected harvest window to organise labour, equipment, curing space, packaging and transport. Confirm which tasks can proceed in parallel and which depend on the previous operation being complete. The pace of lifting should match the capacity to handle the crop safely. Bringing in more onions than can be cured or sorted creates avoidable congestion and quality risk.

Allocate clear responsibility for crop readiness, handling standards, stock identification and dispatch approval. Brief temporary staff using practical demonstrations, including how to avoid cuts, bruising and excessive drops. Inspect a sample of the work early in each shift so incorrect practices are corrected before they affect a large quantity. Provide a clear route for reporting equipment faults or quality concerns.

Maintain a daily movement record during peak activity: quantity lifted, curing, graded, packed, dispatched and rejected. Reconcile the stages without counting the same onions twice. Where exact weighing is not yet available, identify estimates as estimates and replace them when measured information becomes available. This helps management see bottlenecks and prevents sales commitments from exceeding prepared stock.

Reviewing the Season Before Expanding

At the end of the cycle, compare each block's saleable yield, grade mix, net selling return and directly attributable costs. Include rejected produce and unsold stock in the review. Identify whether poor results arose primarily from establishment, crop growth, harvest timing, post-harvest handling or market terms. These causes require different investments and should not be combined into a vague conclusion that prices were poor.

Assess expansion against water reliability, working capital, labour and handling capacity at the busiest point of the season. Additional hectares may increase pressure on an existing bottleneck faster than they increase profit. Compare expansion with improving output or reducing losses on the current area. Use quotations and realistic operating experience to evaluate the alternatives before committing cash.

Retain a short improvement plan for the next crop. Assign responsibility for soil sampling, cultivar decisions, equipment repairs, supplier negotiations and buyer discussions. Schedule these actions early enough to influence planting and harvest. The season's records then become a practical planning resource rather than a collection of documents stored only after the crop has been sold.

Keeping Onion Lots Separate Through Curing and Sale

A lot reference should remain attached to onions as they move from the field into curing, grading, storage and dispatch. The purpose is to connect a buyer's result with the crop and handling history behind it. Once different lots are mixed, a quality complaint becomes harder to investigate and a stronger lot can conceal losses in a weaker one.

Use a visible identifier at each holding location and on the movement record. Record any deliberate combination of lots, including the quantities and reason. Do not continue using the name of only one source field after other material has been added.

Lot record	Information carried forward
Field origin	Block, variety and harvest reference.
Curing location	Place, entry date and relevant observations.
Grading movement	Date, quantity and grades produced.
Storage position	Clearly identified stack or bay.
Dispatch	Buyer, quantity and delivery reference.
Exception	Quality concern, loss or reassignment.

Start the daily stock check with lots due for sale and lots under observation. A correct total tonnage does not prove that each lot is in the expected condition. Keep uncertain stock separate from quantities offered as immediately available.

At settlement, attach deductions and buyer feedback to the source lot. This makes it possible to compare field, curing and storage outcomes rather than judging the entire crop from one average selling price. The record becomes more valuable over successive harvests because recurring weaknesses become visible.

Turning a Curing Observation Into a Release Decision

Curing needs an operating record, not merely a calendar entry saying that onions have spent a certain number of days in a holding area. Conditions and crop state differ between lots. Base release on appropriate crop observations and the requirements of the intended market, with technical advice where needed.

Assign responsibility for inspecting and recording the lot. Note uneven areas, damp material, damaged bulbs or other concerns that require attention. Record the location within the lot so the next inspection can check whether the same issue persists.

Review point	Decision supported
Lot identity and quantity	Confirms which onions are being assessed.
Neck and outer-skin condition	Supports the appropriate curing assessment.
Uneven or damp areas	Identifies material needing further attention.
Damaged or suspect bulbs	Separates unsuitable material from sound stock.
Intended sales route	Connects release to the product specification.
Release authorisation	Records who accepted the lot for the next stage.

Avoid mixing released and unreleased material in one indistinguishable stack. The packing team should be able to identify which lot can proceed without guessing from its position. If a released lot later deteriorates, update its status immediately and trace any quantity already dispatched.

Review the cause of delayed release. It may arise from crop condition, weather, handling or inadequate capacity. Extending the holding period without addressing the cause can add losses rather than solve the problem. Retain the lesson when planning the next harvest and curing allocation.

Measuring Storage Loss With Comparable Weights

A storage result needs comparable opening and closing quantities. Bag counts can be misleading if bag sizes change, some bags are partly filled or stock has been regraded. Use a consistent mass basis and keep sales, samples, transfers and rejects separate.

Record representative weighing procedures so successive checks can be compared. A rough estimate at entry and a precise scale reading at exit do not provide a reliable loss measure. Keep the scale and unit used visible in the record.

Stock movement	Illustrative mass
Opening lot	10,000 kg.
Quantity sold	6,000 kg.
Sound stock remaining	3,500 kg.
Recorded rejects	300 kg.
Difference requiring explanation	200 kg.

The 200 kg difference may include moisture change, measurement error or unrecorded movements; it is not automatically theft or spoilage. Investigate the evidence before assigning a cause. The 300 kg of recorded rejects should not also be included as unexplained loss.

Compare the financial result using saleable output and the costs of holding the lot. A rising market price can be offset by reduced saleable mass, additional grading and storage costs. Keep this calculation linked to the lot so management can distinguish a successful storage decision from a favourable price that merely covered avoidable losses.

Scheduling Grading Without Creating a Packing Bottleneck

Grading, bagging, weighing, labelling and loading are connected tasks. Increasing the speed of one stage can create queues at another. Observe how product actually moves through the operation before adding labour or equipment.

Record the output of accepted packed product rather than only the quantity passing through the grader. Rework, missing bags and waiting for labels consume capacity even when the grading line appears busy. Review performance over a representative period rather than the fastest few minutes.

Work stage	Constraint to observe
Feeding the grader	Availability and consistency of incoming material.
Separation into grades	Clear standards and manageable product flow.
Bagging	Correct bag size and enough suitable packaging.
Weighing	Reliable equipment and timely checks.
Labelling	Correct lot and buyer information.
Loading	Vehicle readiness and safe movement.

Assign a person to coordinate changes across the stages. Moving workers to bagging may help temporarily, but it should not leave grading uncontrolled. Brief the team on the required output, grade mix and dispatch sequence before work starts.

At the end of the shift, compare planned and completed dispatches and identify the main delay. A short record of causes is more useful than a general instruction to work faster. Use the result when booking transport and promising the next day's quantities.

Calculating the Consequences of Overfilling Bags

Small differences in average packed weight can accumulate across a large dispatch. Check net mass using an appropriate weighing process and a representative sample. The aim is consistent compliance with the stated pack quantity, without treating deliberate underfilling as a saving.

Separate packaging mass from produce mass where the weighing method requires it. Record the scale check and actual sample results rather than writing only that bags were checked. If variation is high, investigate the filling and checking process.

Illustrative packing result	Calculation
Stated pack quantity	10 kg.
Average actual net quantity	10.2 kg.
Bags dispatched	1,000.
Produce above stated quantity	200 kg.
Illustrative value at R5 per kg	R1,000 of additional produce supplied.

This example isolates the effect of average overfill; it does not establish an acceptable tolerance. Actual packaging and measurement requirements govern the packing standard. The management point is that a small uncontrolled difference can consume saleable crop and distort the comparison between packed bags and harvested tonnes.

Correct the process and recheck before continuing at full speed. Record the outcome so the next shift does not restore the same setting. Include damaged bags and repacking in the stock reconciliation, since those movements can also explain differences between bag purchases and completed sales.