Start / Crops and productivity / Crop yield
A crop estimate made from field samples, before harvest.
Pre-sizing and estimating tool: the results do not replace a design, calculation, or report signed by a qualified professional, nor verification against the applicable standards.
Harvested yield in t/ha, varying grains per ear and keeping the other components constant.
Harvested yield in t/ha, varying thousand-grain mass and keeping the other components constant.
Drag the controls to simulate data different from what you entered (from 30% less to 30% more) and watch the result change instantly.
Harvested yield for combinations of ears per m² and grains per ear, with the thousand-grain mass and losses you entered.
The calculation done in steps, with the values you entered.
The calculation memo gathers this page's inputs, results, equations, assumptions, and references, with fields for project, responsible person, and review. The full report also includes the charts and interpretations, in color. In the print window, choose Save as PDF.
Enter the plant population per m², the ears (or panicles) per plant, the grains per ear, and the thousand-grain mass, obtained from field samples. Also enter the harvest losses and the mass of the bag. The calculator estimates the potential yield and the harvested yield.
280 plants/m², 1.5 ears per plant, 35 grains per ear, thousand-grain weight of 38 g, 3% losses and a 60 kg bag.
Potential = 280 × 1.5 × 35 × 38 ÷ 100 = 5,586 kg/ha. Harvested = 5,586 × 0.97 = 5,418 kg/ha, or 5.4 t/ha.
In bags: 5,418 ÷ 60 = 90.3 sc/ha.
It depends on the most limiting component: plant population, ears per plant, grains per ear, or grain mass. Compare the components in your field with the cultivar's reference.
Part of the grain stays in the field. Measuring the loss with a 1 m² quadrat after harvest is the simplest way to estimate this value.
Important notice: the Agrocalcs tools make estimates and preliminary sizing based on the data entered and on published engineering methods. They do not replace a design, a calculation report or a report signed by a qualified professional (CREA/ART), nor verification against the applicable technical standards and legislation, such as the Regulatory Standards of the Ministry of Labor. Material and fuel properties vary: check with the manufacturer or with analyses of your process before deciding. By using the site, you agree to the Terms of Use.
© 2026 Agrocalcs. Found an error? Write to contato@agrocalcs.com.br.