Author(s): M. GHOSH AND B. DE

Abstract: The field experiment was carried out at the institutional farm of Uttar Banga Krishi Viswavidyalaya, Pundibari, Cooch Behar, West Bengal during the Rabi season of 2006-07 and 2007-08 to study the performance of different potato cultivars. Experiment was laid out in a Randomized Block Design with ten treatments (cultivars): Kufri Pukhraj (V1), TPS 92 PT 27 (V2), Kufri Ashoka (V3), HPS 11/13 (V4), Kufri Jyoti (V5), Kufri Chipsona 2 (V6), Kufri Chandramukhi (V7), Kufri Jyoti (Hill Source Cultivar) (V8), Local Cultivar (V9) and Kufri Jyoti (Farmer\'s Cultivar) (V10). The treatments were replicated thrice. Results obtained from the experiment showed that the increase in final yield of Kufri jyoti (hilt source cultivar) corresponded to the higher Leaf Area Index; higher chlorophyll content in leaves, higher crop growth rate, higher net assimilation rate and higher relative growth rate, followed by Kufri Pukhraj (V1) and TPS 92 PT27 (V2). Kufri Jyoti (hill source cultivar) recorded highest values of most of the all yield attributes like number of tubers plant-1 (5.66 plant-1) tuber weight plant-1(208.26 g plant-1) which ultimately produce higher final tuber yield (29.02 t ha-1). This was followed by Kufri Pukhraj and 92 PT 27. Thus, it may be concluded from the above results that the cultivar Kufri Jyoti (hill source cultivar) is highly suitable under late planted condition of Terai agro-climatic situation..

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