Where Are the Sweetest Oranges Found?

Overview

Objectives/Goals Our goal was to provide information for "Washington Navel" orange growers to know about where they can find the sweetest oranges on an orange tree for a preferred quality of oranges to sell to their customers. Methods/Materials We decided to test the sugar-to-acid ratio of the oranges from four marked-off portions of the tree; North, South, East, and West, respectively. We used the refractometer to test the sugar content, and then we used the hydrometer to test the acid level. We tested this over a period of three days for two years and during the same time each year. Results We concluded that over a two-year period of time that the South side of the tree had the sweetest oranges consistently thorughout our testing. Conclusions/Discussion Our results showed us that the South side of the orange tree has the sweetest oranges because the sunlight hits the oranges for a longer period of time. This causes the orange tree to receive much more sunlight- a major ingredient in photosynthesis, which helps the tree to increase glucose production and causes the sugar content to be higher in the oranges.

Competition history

• CSEF 2003 Plant Biology · Entry J1602

Resources

• CSEF project summary ↗

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