USDA’s National Agricultural Statistics Service, Pacific Regional Field Office recently completed the California Mandarin Objective Measurement Survey. A sample of 293 Tango and W. Murcott Afourer Mandarin varieties were randomly selected proportional to county and variety bearing acreage. Results show an average fruit set of 596 fruit per tree and an average fruit size of 1.344 inches in diameter for these varieties. This compares with the 2021 average fruit set of 290 fruit per tree with an average fruit size of 1.363 inches in diameter and the 2020 average fruit per tree of 945 with an average fruit size of 1.488 inches in diameter. This survey was conducted for the first time in 2020.
Fruit counts were made from two trees per orchard, and fruit diameter measurements were taken on the right quadrant of four trees surrounding the two sampled trees.