Figure IV. Early Ohio.
Standardization also means grading to eliminate potatoes infected with disease, such as common scab and late blight, sunken discolorations or dry hard blisters, green, spongy and coarse stock. All of these defects tend to lower prices.
In order to increase the value of the Minnesota potato we must also supply the market with the variety which it demands, and, furthermore, this variety must be free from mixture. Minnesota has already taken a step in this direction. The Minnesota Agricultural Experiment Station, Minnesota Crop Improvement Association and the Minnesota Potato Growers' Association have recommended the following varieties and types to be selected and grown.
The Rural New Yorker, as shown in Figure 1, is the leading round, white, late potato for Minnesota. It is a good yielding and keeping variety, fine in quality, an excellent market sort and suitable for almost any soil.
Similar to the Rural New Yorker are the Carman No. 3 and Sir Walter Raleigh.
The Green Mountain is a desirable white late potato, similar to the Rural New Yorker, but more oblong and with squarer ends. It is better suited to rich heavy soils than the Rural New Yorker, as they are not so likely to grow hollow.
Figure V. Triumph.
Other similar varieties are the Carman No. 1, Green Mountain, Jr., and State of Maine.
The Burbank (Fig. II) is a long, white, late potato of excellent quality and suitable only for rich, loose, loam soils. Thrives well upon new rich soils that are well supplied with humus.