The yield on the plots with early French fries varieties Amora and Sinora, which are monitored by the Interprovincial Test Center for Potato Cultivation (PCA), are slightly ahead of the long-term average. The crop starts to wear out very quickly. This is apparent from the trial grubbing-up of 13 July that was published yesterday.
The Sinora yield averages 34 tons per hectare. The eight-year average for this variety is 96 tons after 31 growing days. The spread this season is from 24 to 46 tons per hectare. The average in size 50mm is 23 tons. Half of the plots have already run out of several tons in size 70mm. This means that the size of the potatoes is average for this period. According to the PCA, the ripening rate is 36%, which is clearly higher than average. One plot is even 85% dead.
The average yield of Amora is 104 tons per hectare after 38 growing days. The yields of the eight plots range from 32 to 46 tons per hectare. The irrigated plots achieve the highest yields. On average, the yield of potatoes in size 50mm is 31 tons per hectare and 7 tons per hectare in size 70mm. The Amora is also starting to ripen quickly, 49% percent has already died. For the earliest planted and not irrigated plot, that percentage is even as high as 80%.
Quality
The underwater weight of both varieties has increased considerably compared to the previous trial harvest. At Amora the average is 398 grams with a range of 371 to 416 grams. The average underwater weight of Sinora is almost the same at 399 grams, but here the spread is wider and ranges from 360 to 427 grams. In the samples with a low underwater weight there were some floats in this breed. The chip color is good in both varieties and there is hardly any loss except for a single green tuber.