Evaluation of Sweet Potato (Ipomoea batatus (L.) Lam.) Germplasm Suitable for the Coastal Agroclimatic Situation of Sundarbans, West Bengal
Publication Date : 20/05/2015
Sweet Potato is an important tuber crop of rabi-summer season, suitable for the coastal agro-climatic situation of Sundarban due to its tolerance to salinity, to partial drought and to pest & diseases. However, due to lack of availability of location specific variety, the farmers of this region harvest far below the potential productivity of this crop which is around 15 – 17 t/ha. Hence it is imperative to replace the traditional undescribed germplasm with some superior genotypes through introduction and screening. With this objective thirteen genotypes (90/101, BCSP-7, Kamala Sundari, BCSP -10, h-200, TSP12/4, Pusa Safed, Samrat, Sree Bhadra, ST-14, Kishan, Sree Nandini, Sree Vardhini) were collected and evaluated at the Instructional Farm of Ramkrishna Ashram Krishi Vigyan Kendra, Nimpith, South 24 Parganas, West Bengal, for yield and qualitative parameters. Data were collected on sixteen growth and yield related traits and then subjected to statistical analysis. Five genotypes, namely Sree Nandini, Pusa Safed, H-200, Kamala Sundari and 90/101, recorded significantly higher value for the major yield contributing characters, i.e., tuber fresh weight, number of tuber/hill, tuber diameter, vine intermodal length and leaf area. The fresh tuber yield per hill was also high for these genotypes, which were 630.00g, 726.00g, 790.77g, 861.37g and 683.23g per hill, respectively. Though, Kamala Sundari recorded highest yield as well as β-carotene content, it showed poor storability. Considering all parameters, three genotypes, namely H-200, 90/101 and Pusa Safed proved tsuitable for the farmers of Sundarban region.