Maize Farming in Zimbabwe: Season, Inputs and Common Mistakes

Maize is the country's staple and the crop most households plant, whether on two hectares or a garden plot. Good maize farming in Zimbabwe is mostly about timing: planting with the right rains, applying fertiliser at the right growth stage, and weeding before the crop is set back. Yields differ enormously between farmers on identical soils for exactly those reasons.

The season

The summer cropping season follows the rains, which typically arrive between November and December depending on the region and the year. The critical decision is planting at the onset of effective rains — enough moisture in the profile for germination and continued growth — rather than at the first shower, which can be followed by a dry spell that kills a young crop.

Zimbabwe is divided into agro-ecological regions with very different rainfall. What works in Mashonaland's higher rainfall areas is not what works in the drier south and lowveld, where drought-tolerant small grains often make more sense than maize. Your local Agritex extension officer knows your region's recommendations, and that advice is free.

Land preparation

• Soil sampling before the season tells you what the land actually needs, rather than what your neighbour bought.
• Liming where soils are acidic — it takes time to act, so it is applied ahead of the season.
• Ploughing or ripping to break compaction and open the profile.
• Conservation agriculture — planting basins, minimum tillage, mulching and rotation — is widely promoted for smallholders because it conserves moisture in poor rainfall years.

Choosing a variety

Seed houses sell varieties by maturity group: short-season varieties for drier regions and late plantings, medium and long-season varieties where the rains are reliable and the growing period is long. Match the variety to your region and to how late you are planting — a long-season variety planted late will still be filling grain when the rains stop.

Buy certified seed from a registered supplier. Counterfeit seed is sold every season and the loss is not discovered until germination fails.

Fertiliser

The standard programme is a basal compound fertiliser at planting and a nitrogen top dressing when the crop is established, commonly split so the plant gets nitrogen when it needs it most. Rates depend on soil test results, the target yield and the region, so take the recommendation from your soil analysis or extension officer rather than from a general figure. Manure improves soil structure and is widely used alongside or instead of compound fertiliser where cattle are kept.

Two practical rules save more crops than any product: place fertiliser correctly relative to the seed rather than in contact with it, and apply top dressing into moist soil, not onto dry ground.

Weeding

The first weeks decide the yield. Weeds compete for moisture and nitrogen exactly when the crop is establishing, and a maize crop that loses that competition never recovers. Weed early, weed twice, and if you use herbicides, follow the label for the product, rate and timing — and never use a herbicide meant for another crop.

Pests and diseases

• Fall armyworm — now a permanent feature. Scout regularly, especially in the whorl of young plants, and act early; late spraying on a large infestation is expensive and less effective.
• Stalk borer — traditionally managed by destroying crop residues and by timely control.
• Termites, which lodge plants late in the season on sandy soils.
• Grey leaf spot, maize streak and other diseases — variety choice and rotation are the first line of defence.

Scouting weekly and acting on what you see beats calendar spraying on both cost and results.

Harvest and storage

Harvest when the grain has dried down and the cobs are mature, then dry properly before shelling and storage. More maize is lost after harvest than most farmers realise, to weevils, larger grain borer, rodents and mould. Store dry, in clean bags or sealed containers, off the floor, with an approved storage protectant used strictly according to its label. Grain stored damp will mould, and mouldy maize can carry toxins that are dangerous to people and livestock.

Selling

Producers sell to the national grain marketing channel, to millers, to contractors under contract arrangements, or locally. Prices, contract terms and payment timelines vary by season and by buyer — establish who is buying, at what price and on what payment terms before harvest, not after. Keep records of inputs and costs so you know whether the season actually made money; see our small business guide on record keeping.

More farming and business guides are in Business and on the guides page.