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ThesisItem Open Access Performance of strawberry (Fragaria x ananassa Duch.) in different growing conditions(College of Horticulture, Vellanikkara, 2015) Anu Kurian; KAU; Ajith Kumar, KThe study on “Performance of strawberry (Fragaria x ananassa Duch.) in different growing conditions” was conducted at College of Horticulture, Vellanikkara, Thrissur and Krishi Vigyan Kendra, Ambalavayal, Wayanad, Kerala from September 2013 to March 2014. The main objective was to compare the performance of strawberry (Fragaria x ananassa Duch.) under three growing conditions (open field, greenhouse and fan and pad system) and under two agro ecological zones of Kerala (Central mid-lands and High ranges). Among the growth characters, plant height and plant spread were maximum in the fan and pad system in Central midlands. More number of leaves per plant was recorded under open condition. Number of leaves and plant spread were the maximum with planting in the last week of September. In High ranges, plant height and plant spread were highest in the greenhouse system and maximum number of leaves was recorded in open condition. Number of leaves per plant recorded was maximum in last week of September planting. In Central mid-lands, minimum days to first flowering (55.67 days) was recorded under fan and pad system. The systems of growing had no effect on number of flowers and number of clusters per plant. Days to first flowering was minimum (57.11 days) in plants mulched with black polyethylene. Early flowering (55.0 days) was observed when mulched with black polyethylene in fan and pad system. In High ranges, number of flowers (20.78) and number of clusters per plant (17.47) were highest under open condition. Systems of growing had no effect on days to first flowering. Plants in the open condition with black polyethylene mulch resulted in maximum number of flowers (25.85) and number of clusters per plant (21.57) per plant. Among the yield attributes, in Central midlands, fan and pad system was the best with respect to production of fruits per plant (5.87). Systems of growing had no effect on yield and average fruit weight per plant. Greenhouse was the best with respect to early harvest (82.67 days) of fruits whereas harvesting priod extended up to 163.25 days under open condition. Planting in last week of September recorded maximum number of fruits per plant (5.43). Early harvest (95.06 days) was recorded when mulched with black polyethylene. In High ranges, maximum number of fruits (8.97), yield (80.35 g), average fruit weight (8.79 g) per plant and early harvest of fruits (81.17 days) were observed in open condition. Maximum number of fruits (10.53) and highest yield (102.17 g) per plant were recorded in plants with black polyethylene mulch under open condition. In Central midlands, systems of growing had no effect on content of total soluble solids (TSS), acidity, TSS/acidity ratio. Highest total sugars (6.03%) was recorded in open condition. Time of planting and mulch had no effect on quality parameters. In High ranges, lowest acidity (0.13 %), highest TSS (11.07 0 Brix), TSS/acidity ratio (86.46) and total sugars (5.88 %) were recorded under greenhouse condition. In Central mid-lands, the overall sensory score was highest in plants in the open field which were planted in the last week of September with white mulch. However, in High ranges, the overall sensory score was highest in open filed, planted in last week of September with black polyethylene mulch. The fruits harvested from High ranges had better appearance and colour compared to fruits obtained from Central midlands.