Evaluating Varietal Adaptability of Four Irish Potato (Solanum tuberosum), with Emphasis on Growth, Yield and Disease Resistant Status in the North West Region of Cameroon

Irish potato (Solanum tuberosum L.) is amongst very important vegetable crops worldwide. It is fourth among food crops after rice, wheat and maize. Potatoes provide a cheap source of carbohydrates, vitamins (B1 and C) and minerals. Irish potato production provides a livelihood for many farmers in Cameroon, especially in the Western Highlands. Production is limited by the scarcity of seeds of local varieties or Cameroon-improved varieties. Farmers now rely on some European imported varieties, of which adaptability studies have not been conducted. The study was designed to evaluate the adaptability of three European varieties (Safari, Panamera and Diamant) in relation to a check (Banso). A field study was conducted in Mankon, North West Region of Cameroon, from August to November in a randomised complete block design. Variety did not influence plant emergence and plant height. Imported varieties had more foliage, and this resulted in greater vigour and leaf area index. Productivity of Banso (~ 3.3 t ha-1) and Panamera (3.5 t ha-1) differed significantly (P< 0.05) from all other varieties; Safari (~ 2.8 t ha-1) and Diamant (~ 2.3 t ha-1). Late blight incidence was significantly higher (P< 0.05) in Panamera than in the other varieties. Banso and Panamera are recommended for growers in the North West Region of Cameroon.