Planting Regime · Maize · Ghana Agribusiness Playbook

Planting Regime · Pillar 04

Pillar 1 showed that Ghana's maize yields sit at less than half of what the seed can give. This pillar explains why, and it is not a mystery. The gap is an execution gap. The average field gives about 2.6 tonnes, while improved varieties planted on time, fed properly and kept clean can give 5 or 6 tonnes. The planting regime is simply the operational plan that decides which of those two outcomes a farmer gets. For a business, that has two meanings: it is the checklist that makes a farm profitable, and it is a set of services, ploughing, planting, spraying and shelling, that other people will pay to have done well.

A tractor ploughing a maize field to a clean seedbed before the rains settle

Timing, not luck

Much of the yield gap is an execution gap: timing, feeding and weeding.

2.6 / 6

tonnes a hectare: the average field, against improved seed planted on time and fed

GH¢471

more per acre for farmers who mechanised ploughing and shelling¹

Largest block

of the cost of an acre is hired labour, so the operations become services

This pillar does not repeat the variety choice, which sits in the first pillar, nor the full cost of these operations, which sits in the cost pillar. It focuses on the recommended regime, the calendar and the operations, and the openings that come from helping farmers get them right.

Figure 7 Ghana's two maize calendars: when to plant and harvest

What this shows

The south gets two crops a year from bi-modal rains; the north gets one longer season. The single commonest and costliest mistake is planting late and running out of rain before the cob fills, so the calendar is the first thing any maize business must get right.

Maize planted in straight rows at the correct spacing across a prepared field

Plant on time

Planting with the first steady rains, and in rows, is the first thing to get right.

2 crops

a year in the forest and coastal south, from two rainy seasons

1 crop

a year in the northern savannah, from one longer season

🌽 The operations that actually move the yield 🌽

The agronomy is well established and simple to state. The value is not in knowing it, but in doing it on time, every season, which most smallholders do not manage alone. One cheap change stands out: planting in rows along a line, instead of scattering seed by hand, is a core practice extension programmes teach², and placing fertiliser beside each plant rather than broadcasting it raises fertiliser efficiency³.

Read the operations table as a business, not a manual. Every line is a place where a smallholder falls short because the work is hard, poorly timed, or needs equipment they do not own. That is precisely why the operations themselves have become services. Ploughing an acre already costs about GH¢250, paid to a tractor owner, and planting, spraying and shelling are going the same way⁴. Because hired labour for planting, weeding, harvesting and shelling is the largest block of the cost of an acre in the Pillar 5 cost build, anything that mechanises that labour both lowers the farmer’s cost and creates a business for the person who owns the machine (the full cost breakdown is in Pillar 5). The payoff is measurable: a 2024 study in Ejura found that farmers who used mechanised ploughing and shelling netted about GH¢471 more per acre after allowing for differences between farmers (raw averages GH¢1,643 against GH¢1,004), and harvested 22 bags against 16, although users also applied more fertiliser¹.

22 vs 16

bags an acre, mechanised against manual¹

GH¢250

an acre, what ploughing already sells for to a tractor owner

A farmer applying fertiliser to knee-high maize before tasselling

Feed on time

Fertiliser about two weeks after planting and a top-dress about six weeks after planting: maize is a heavy feeder that must be fed right and on time.

Weeding a young maize field clean in the first six weeks after planting

Weed early

Keeping the field clean through the first six weeks, when weeds compete hardest, is the window that decides the crop.

🌽 The maize regime, operation by operation 🌽

Table 5: maize operations per acre, what good practice looks like, and why each one decides the yield
Operation	What good practice looks like	Why it decides the outcome
Land preparation	Plough and harrow to a clean seedbed before the rains settle	A weedy or cloddy seedbed caps the yield from day one
Seed and spacing	About 20 to 25 kg of seed per hectare; rows 75 to 80 cm apart, hills 40 cm within, two plants per hill (about 62,500 plants per hectare)	Too sparse wastes land; too dense starves every plant
Fertiliser	Two 50 kg bags of NPK 15-15-15 about two weeks after planting, plus one 50 kg bag of urea about 6 weeks after planting, per acre	Maize is a heavy feeder; feed it right and on time or the yield never comes
Weed control	Keep the field clean for the first 6 weeks	Weeds compete hardest early; lose this window and lose the crop
Timing	Plant with the first steady rains, not before and not late	Late planting runs out of rain at cob-fill; it is the commonest costly error

A practical summary of the recommended per-acre regime; exact rates and dates should follow the local extension guide and a soil test.

Sources: Ministry of Food and Agriculture, Guide to Maize Production; Njoroge et al. (2023), 4R Maize Guide. In agronomic terms the fertiliser rate is about 90-45-45 kg/ha of N-P2O5-K2O for a 4-tonne target, rising to 120-60-60 for 5 tonnes. Adjust to zone and soil test.

🌽 The 2026 policy tailwind: free fertiliser and service centres 🌽

Shelling and drying harvested maize, the operation that protects grain quality and price

Shell and dry

The operations are services: ploughing, planting, spraying and shelling.

Two policy moves make the inputs side unusually favourable in 2026. First, the government switched from subsidised to free fertiliser distribution for the 2026 planting season, which, if delivered on time, removes the single biggest cash barrier to feeding the crop properly, although distribution delays were reported in mid-2026⁵; this follows the Planting for Food and Jobs input-credit phase of 2023 to 2024, now succeeded by the Feed Ghana Programme⁶. Second, the Feed Ghana Programme is building Farmer Service Centres, about 50 in the near term with a stated longer-term aim of one in every district, to put seed, fertiliser, mechanisation and advice in one place⁶. For a farmer, this is the cheapest season in years to close the yield gap. For an entrepreneur, the service centres are both a distribution channel and, in time, a model to imitate privately.

Free

fertiliser for the 2026 season, which removes the biggest cash barrier where it arrives on time

~50

Farmer Service Centres in the near term, aiming for one in every district

Free fertiliser

2026 switch from subsidy to free distribution for the planting season

Feed Ghana

succeeds the Planting for Food and Jobs input-credit phase of 2023 to 2024

Rain-fed

almost all maize, so the crop lives or dies by the calendar

A jab-planter setting maize seed in evenly spaced rows across a field

Timing captures yield

Inputs plus timing capture the yield that inputs alone leave behind.

🌽 The Opening: planting and operations 🌽

01

Mechanisation-as-a-service. Ploughing already sells at about GH¢250 an acre. Owning a tractor, planter, sprayer or sheller and hiring it out across a district turns other farmers' hardest, costliest task into your revenue.

02

The input-plus-advice bundle. Farmers who get seed and fertiliser but plant late still fail. A service that delivers the inputs and the timing, when to plant, when to top-dress, when to weed, captures the yield that inputs alone leave behind, and it plugs straight into the free-fertiliser and Farmer Service Centre push.

03

A dry-season irrigated crop. Where a little water is available, planting off the main rains produces grain when everyone else has none and prices are highest. This is a premium-timing play that also sidesteps the harvest glut.

04

Run a Farmer Service Centre model privately. The government plans 50 centres in the first phase and 270 by 2028. A private operator can copy it at village scale, bundling inputs, machinery hire and advice for a fee or a share of the crop.

🌽 The risks that sit inside the planting regime 🌽

A Ghanaian smallholder maize farmer standing in a dry, stunted maize field with wilted brown leaves, looking up at a clear sky with no rain clouds, documentary photograph

Missing the planting window

HIGH

What it is

The rains start later or fail more often than they used to, and a crop planted late runs out of water before the cob fills. Late timing is what most often turns a season into a loss.

Evidence

Early planting is the most important single factor in raising yield, and nearly all maize is rain-fed, so the crop lives or dies by the calendar⁷.

Who it hits

Rain-fed smallholders, especially in the drier north, and any service business whose revenue depends on their harvest.

How to manage it

Plant with the first steady rains using an early or drought-tolerant variety (see Pillar 1), and where possible add supplementary irrigation to take the timing risk out of the farmer's hands.

A Ghanaian farmer receiving bags of fertiliser from a government extension officer at a rural distribution point, other farmers queued behind with a ledger book on a table, documentary photograph

Free inputs and policy promises that may not last

MEDIUM

What it is

The 2026 free-fertiliser policy is generous but it is a political choice, not a guarantee. A farm or service built on the assumption of free inputs is exposed if the policy is scaled back.

Evidence

Ghana has switched between subsidy, input credit and now free distribution within a few years. The Ministry of Food and Agriculture’s 2026 allocation was reported cut by about half, and in May 2026 the ministry said only 12.4 percent of its budget had actually been released. The buffer-stock company says it needs about GH¢770 million to clear the rice glut alone, against GH¢100 million released for grain purchases⁸⁹.

Who it hits

Farmers and input dealers who plan around this year's free fertiliser continuing indefinitely.

How to manage it

Use the free inputs to build yield and cash reserves now, but budget as if you will pay full price next year, and build a supplier relationship that survives a policy change.

🌽 Key takeaways 🌽

01

Much of the yield gap is an execution gap: the average field gives about 2.6 tonnes, while improved seed managed well on timing, feeding and weeding can give 5 to 6.

02

Ghana has two calendars: a double season in the south (plant March to April and mid-July to early September) and a single long season in the north (plant late May to early July). Match your business to the zone.

03

Five operations decide the yield: clean land preparation, correct seed rate and spacing, fertiliser about two weeks after planting and a top-dress, early weed control, and above all planting on time.

04

Because hired labour is the largest block of the cost of growing maize, the operations themselves (ploughing, planting, spraying, shelling) are service businesses, not just tasks.

05

2026 is unusually favourable: free fertiliser and the planned Farmer Service Centres can lower the cost of closing the yield gap, but do not assume free inputs will last.

Written for each reader

🌽 Practitioner intelligence 🌽

Hover any card to pause and lift it.

For students

The planting regime is where a graduate with agronomy knowledge is most useful, because timing is a skill most farmers lack. You can earn as a field officer who tells a group of farmers exactly when to plant, top-dress and weed, or by running a small mechanisation service; a sprayer or sheller needs far less capital than a tractor. The gap to fill: extension officers are too few to reach most farmers, so timely, practical advice is scarce. Being the person who delivers it, by phone, WhatsApp group or in person, is a real job. The downside to avoid is giving generic advice; it must be tied to this season's rains and this farmer's field.

For entrepreneurs

First move: own one operation and sell it. A sheller, a knapsack or motorised sprayer, or a two-wheel tractor serves a whole community and pays back fast because labour is the farmer's biggest cost. Secure the machine and a cluster of farmers, then add services. The trap: buying a big tractor on credit before you have enough customers to keep it working; start with the smallest machine that sells. The incentive to use is the free-fertiliser season, which frees up farmer cash to pay for your service.

For investors

The thesis: mechanisation and timely-input services are under-supplied and directly lift yields, so they scale with the yield gap. Diligence asks: machine utilisation rates, the size and loyalty of the farmer base, and whether the model bundles advice, which is stickier, or just hires out iron, which is a commodity. The risk: policy dependence and weather, so favour models that earn across both seasons and both zones rather than betting on one harvest.

For ecosystem actors

The highest-return lever is timeliness at scale: fund mechanisation hire and last-mile extension so more farmers plant and feed on time. The measurable outcome is average yield rising toward 4 tonnes a hectare and the share of farmers planting within the recommended window going up. The failure to avoid is handing out free fertiliser without the advice and machinery to use it well, which spends public money without closing the yield gap.

For students

The planting regime is where a graduate with agronomy knowledge is most useful, because timing is a skill most farmers lack. You can earn as a field officer who tells a group of farmers exactly when to plant, top-dress and weed, or by running a small mechanisation service; a sprayer or sheller needs far less capital than a tractor. The gap to fill: extension officers are too few to reach most farmers, so timely, practical advice is scarce. Being the person who delivers it, by phone, WhatsApp group or in person, is a real job. The downside to avoid is giving generic advice; it must be tied to this season's rains and this farmer's field.

For entrepreneurs

First move: own one operation and sell it. A sheller, a knapsack or motorised sprayer, or a two-wheel tractor serves a whole community and pays back fast because labour is the farmer's biggest cost. Secure the machine and a cluster of farmers, then add services. The trap: buying a big tractor on credit before you have enough customers to keep it working; start with the smallest machine that sells. The incentive to use is the free-fertiliser season, which frees up farmer cash to pay for your service.

For investors

The thesis: mechanisation and timely-input services are under-supplied and directly lift yields, so they scale with the yield gap. Diligence asks: machine utilisation rates, the size and loyalty of the farmer base, and whether the model bundles advice, which is stickier, or just hires out iron, which is a commodity. The risk: policy dependence and weather, so favour models that earn across both seasons and both zones rather than betting on one harvest.

For ecosystem actors

The highest-return lever is timeliness at scale: fund mechanisation hire and last-mile extension so more farmers plant and feed on time. The measurable outcome is average yield rising toward 4 tonnes a hectare and the share of farmers planting within the recommended window going up. The failure to avoid is handing out free fertiliser without the advice and machinery to use it well, which spends public money without closing the yield gap.

Footnotes

Yevu et al. (2024).↑
West Africa Centre for Crop Improvement (2020).↑
Adzawla et al. (2024).↑
Bruce (2024), Agrisolve Ghana figures reported by Graphic Online.↑
Ecofin Agency (2026).↑
Ministry of Food & Agriculture (2025).↑
Ministry of Food & Agriculture (2020).↑
Graphic Online (2026, June 6).↑
Ali (2026).↑