Panghal, V.P.S.Dagar, Sandeep2023-05-312023-05-312022-07https://krishikosh.egranth.ac.in/handle/1/5810197479The experiment entitled “Performance of varieties as affected by different crop geometry with cut seed tuber planting of potato” was conducted at Research Farm of the Department of Vegetable Science, CCS Haryana Agricultural University, Hisar. The treatments comprising of three potato varieties (Kufri Neelkanth, Kufri Bahar and Kufri Lima) and four different spacing (60×10 cm, 60×15 cm, 60×20 cm with cut tuber and 60×20 cm with whole tuber) were laid out in a randomized block design (factorial) with three replications keeping gross plot size 4.8x3.6 m2 net plot size 3.6x3.0 m2. The results revealed that maximum plant emergence recorded at 30 DAP, number and weight of leaves and stems per hill and number of large size tuber (>75 g grade) was recorded at spacing 60x20 cm using whole tuber, which was significantly higher as compared to other spacing. Plant height, fresh weight of foliage per m2, number of >25-50 g size tuber, marketable and biological yield was recorded maximum with 60x20 cm spacing using whole tuber for planting which was at par with 60x10 cm spacing using cut tuber, However, total number of tubers and small size tubers less than 25 g was recorded significantly higher in 60x10 cm plant spacing using cut tuber for planting. Maximum yield of large size tuber (>50-75 and >75 g grade) as well as total tuber yield (395.78 q/ha) was recorded in 60x 20cm spacing using whole tuber for planting, which was at par with cut tuber planting at 60x10 and 60x15 cm spacing. Among the varieties, Kufri Neelkanth and Kufri Lima performed better for plant emergence, plant height, number and weight of leaves and stems per hill, number and yield of tubers of >50-75 g grade as well as total tuber yield as compared to Kufri Bahar. However, maximum marketable tuber yield was recorded in Kufri Lima variety as compared to other varieties. Quality parameters such as dry matter of foliage and tuber, ascorbic acid, reducing sugar and total sugar content was recorded maximum in 60x20 cm spacing with whole tuber for planting. Among the varieties, Kufri Lima and Kufri Bahar recorded higher dry matter, reducing and total sugar content. Whereas, Kufri Bahar recorded minimum physiological, decay and sprouting losses on weight basis as compared to other varieties, hence more self-life in storage. Highest net return (Rs. 2,79,488/-) benefit cost ratio (3.18) was recorded with potato variety Kufri Neelkanth planting at 60×20 cm spacing using whole tuber for planting.EnglishThesis