Enhancing the competitive ability of crops - Ecological Management of Agricultural Weeds - page 295

Table 6.4. Characteristics of four potato cultivars

Branches per

Cultivar Emergence Canopy closure Falling over seed piece Plant size Foliage density Maturity

Green Mountain 6/14 7/5 7/28 15.2 Very large and spreading Dense Very late

Norchip 6/15-16 7/7 7/28 4.7 Medium-large and upright Dense Early

Sebago 6/16-17 7/9 7/11 6.0 Large,erect to spreading Sparse Very late

Katahdin 6/16-17 7/8 7/11 3.1 Medium to large and spreading Sparse Late

Source: Yip,Sweet & Sieczka (1974).