Wheat Yield in Tons per Hectare by Temperature

Wheat Yield Calculator (tonnes per hectare with temperature adjustment)

Wheat (Triticum aestivum) is a cool-season cereal, and in Brazil its yield reacts strongly to the mean temperature during grain filling. The base formula is total_tonnes = area_ha × base_yield_t_per_ha × temperature_factor. That temperature factor docks the result whenever the mean runs above or below the sweet spot of 15–22°C.

In Brazil, rain-fed wheat in Paraná, Rio Grande do Sul and São Paulo averages 2,500–3,500 kg/ha. Irrigated wheat in the Cerrado does better, hitting 4,500–5,500 kg/ha. Sowing runs May–July and harvest September–November. EMBRAPA cultivars like BRS Guamirim and BRS Marfim see wide use. According to CONAB, Brazil still imports roughly 50% of the wheat it consumes, most of it from Argentina.

Applications

Use it to project harvest revenue and weigh a rain-fed system against an irrigated one. It also helps you run climate-risk scenarios, plan storage and logistics, and see how a cultivar stacks up against the regional CONAB averages.

FAQ

What is the ideal temperature for wheat? A mean somewhere between 15°C and 22°C through the vegetative and grain-filling phases. Push past 25°C and you start seeing grain abortion and lower test weight.

How many tonnes per hectare is a good yield? For rain-fed crops, 2.5–3.5 t/ha is the southern Brazilian average. In the irrigated Cerrado, count on 4.5–5.5 t/ha. Anything over 6 t/ha is exceptional.

Why does Brazil import so much wheat? Home-grown production only covers about half of what the country eats. The rest comes mostly from Argentina, brought in under the Mercosur common external tariff.