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A field study was implemented on performance of advanced potato hybrids for three consecutive years from 2015 to 2017 during Kharif season at HREC, Hassan, Karnataka under AICRP-Potato. A total of eight hybrids were evaluated by adopting RCBD with four replications. The tubers were planted at 60 cm x 20 cm spacing with soil application of RDF (75:75:100 kg NPK/ha) and FYM (25 t/ha) as per the package of practices of UHS, Bagalkot. The hybrids such as AICRP-P-15, AICRP-P-16, AICRP-P-17, AICRP-P-18 AICRP-C-13, AICRP-C-17, AICRP-C-20 and AICRP-C-24 were adopted for evaluation studies. All hybrids were tested for marketable and total tuber yield during harvest at 75 and 90 days after planting. The pooled data of three years indicated that, hybrid AICRP-P-16 documented highest marketable tuber yield of 15.57 and 20.78 t/ha, total tuber yield of 18.18 and 24.42 t/ha at 75 and 90 DAP, which was on par with AICRP-C-24 (15.01 & 17.76 t/ha) of marketable tuber yield and (17.27& 20.02 t/ha) of total tuber yield at 75 and 90 DAP, respectively. Therefore, it was concluded that hybrid AICRP-P-16 was high yielding and found suitable for cultivation in Southern Dry Zone of Karnataka during Kharif season.

An estimation studies on post harvest losses in potato was surveyed at different potato growing areas of Hassan district during Kharif season for three consecutive years from 2015 to 2017. At main field of potato both losses due to left over produce from randomly selected three farmers plots and losses from storage heap during marketing of potato of same plots were documented on yield parameters such as total tuber yield, late blight diseased tubers, cut or cracked tubers and bruised tubers. The pooled data of three years indicated that, an average losses due to left over produce in different farmer field was about 13.83 per cent of late blight diseased tubers, 15.69 per cent of cut or cracked tubers and 4.60 per cent of bruised tubers. Further, an average losses at storage heap was around 1.83 per cent of diseased tubers, 0.98 per cent of cut or cracked tubers and 0.48 per cent of bruised tubers in short period of storage of 15 to 20 days at farm. From the studies, it was found that both losses due to left over produce in different plots of farmers and losses from storage heap contributed nearly 35.00 per cent post harvest losses in potato under Southern Dry Zone of Karnataka during Kharif season.

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