B. S. VYAKARANAHALVINOD, KUMAR2019-06-102019-06-102007-01-03TH-8375http://krishikosh.egranth.ac.in/handle/1/5810107934Agricultural Research Station, University of Agricultural Sciences, Dharwad dunng kharif 2003 and 2004 to study the effect of seed tuber sise, haulm cu tmg, mtra row spacing, nutrient levels, growth retardants and its methods of application besides micronutrient application and mulching on growth and yield of potato Cv, Kufri Pukhraj and Kufri Jyoti. The results indicated that among the varieties, Kufri Pukhraj was aignincantly superior (19.74 t ha-, over Kufri Jyoti (18.74 t ha-) studied under Northern Transitional Zone of Karnataka. The per plant (338.18 g) and per ha (17.94.t) tuber yield was more with medium size (31-40 g) seed tuber followed by 41-50 g (337.28 g and 17.83 t) and >50 g size seed tuber (333.11 g and 17.58 t). Seed tuber treatment with ZnSOr (0.05 %) recorded maximum total number (8.42) of tubers per plant and total tuber yield (20.62 t) per ha compared to CuSO, (0.05 %) and MgS04 (0.05 %). The closer intra row spacing of 5 cm recorded higher total number of tubers per plant (7.89) and total tuber yield per ha (23,40 t). Further, it was found that the paddy straw mulch performed better (19.97 t ha->) compared to polythene (19,12 t ha-) and no mulch (18.64 t ha-i) treatments.ennullThesis