In 2020, the gross onion yield decreased by 4 percent compared to 2019. The gross yield of table potatoes also remained practically unchanged according to the final harvest estimates by the Dutch Bureau of Statistics (CBS).
According to these estimates, the gross yield of seed onions in 2020 was around 1.3 million tons (-4 percent). The weather conditions in spring 2020 resulted in somewhat larger crop failures compared to the previous year.
Last year, the harvest yield of two-year onion sets was examined for the first time. These bulbs are not sown, but planted as annual onion bulbs. The 6.5 thousand hectares of onion cultivation area generated a yield of 283 thousand tons or around a fifth of the total seed onion yield.
The area under cultivation for seed onions has decreased
In 2020, seed onions were grown on an area of 27.3 thousand hectares. That is 0.3 thousand hectares (1.1 percent) less than a year earlier. The cultivation of table potatoes fell by 2.7 percent to 76.7 thousand hectares last year. At the same time, the sugar beet area increased by almost 3 percent to 81.5 thousand hectares.
Preliminary and Final Harvest Estimates
CBS publishes preliminary harvest estimates (including gross yield and yield per hectare) in October each year based on expert estimates of expected yield per hectare. The total gross profit can ultimately be higher or lower. Depending on the weather, it is possible, for example, that part of the area under cultivation is not harvested or that the final yields per hectare are higher or lower.
The final harvest estimates (including gross yield and yield per hectare) for the same year are then published in January of the following year and are based on a survey of nearly 5,000 crop farmers. Based on the survey, the final yield per hectare and the crop yield ratio, i.e. the actual to the potential crop yield, are determined.