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 same variety that gives 2.6 tonnes in a late-planted, under-fertilised, weedy field gives 5 or 6 tonnes when it is planted on time, fed properly and kept clean. 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

The yield gap is an execution gap, not a matter of luck.

2.6 / 6

tonnes a hectare from the same seed: late and weedy, against on time and fed

GH¢471

more per acre for farmers who mechanised ploughing and shelling (Ejura, 2024)

~50%

of the cost of growing maize 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, lifts both yield and fertiliser efficiency, yet many farmers still broadcast (West Africa Centre for Crop Improvement, 2020).

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 way (Peasant Farmers Association of Ghana, 2024). Because hired labour is about half of the total cost of growing maize, anything that mechanises that labour both lowers the farmer's cost and creates a business for the person who owns the machine. 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, roughly GH¢1,643 against GH¢1,004, and harvested 22 bags against 16 (Yevu et al., 2024).

22 vs 16

bags an acre, mechanised against manual (Ejura, 2024)

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 at planting and again at knee-high, before tasselling: 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 kg of seed per hectare; rows 80 cm apart, plants 40 cm within, 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 at planting, plus one 50 kg bag of urea about 6 weeks later, at knee-high, before tasselling, 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; African Plant Nutrition Institute and CSIR-SARI, 4R Maize Guide (2023). 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 removes the single biggest cash barrier to feeding the crop properly (Ecofin Agency, 2026); this sits alongside the still-running Planting for Food and Jobs input-credit scheme, so support reaches farmers through more than one channel (United States Department of Agriculture, 2023). 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 place (Ministry of Food & Agriculture, 2025). 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, removing the biggest cash barrier to feeding the crop

~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

PFJ credit

Planting for Food and Jobs input credit still running alongside

80%+

of maize is rain-fed, 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 is proving the one-stop-shop concept with 50 centres. 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 🌽

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. Timing, not effort, is what most often turns a season into a loss.

Evidence

Late planting is the commonest costly error, and over 80 percent of maize is rain-fed, so the crop lives or dies by the calendar (United States Department of Agriculture, 2026).

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.

Depending on free or subsidised inputs 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, and the 2026 MoFA budget was cut by about half (Ecofin Agency, 2026; Ministry of Food & Agriculture, 2025).

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

The yield gap is an execution gap: the same seed gives 2.6 or 6 tonnes depending on timing, feeding and weeding, not on luck.

02

Ghana has two calendars: a double season in the south, planting March and September, and a single long season in the north, planting May. Match your business to the zone.

03

Five operations decide the yield: clean land preparation, correct seed rate and spacing, fertiliser at planting and top-dressing, early weed control, and above all planting on time.

04

Because hired labour is about half the cost of growing maize, the operations themselves, ploughing, planting, spraying and shelling, are service businesses, not just tasks.

05

2026 is unusually favourable: free fertiliser and 50 new Farmer Service Centres 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.