Sarma, P.Miyu, MumtakHazarika, B.N.2019-03-272019-03-272019-01-30http://krishikosh.egranth.ac.in/handle/1/5810099517The present investigation was conducted during 2017 at Vegetable Research Farm, College of Horticulture and Forestry, Central Agricultural University, Pasighat, Arunachal Pradesh. The experiment was laid out in Randomized Block Design (RBD) with eight treatments and three replications. Potato variety Kufri Jyoti was used for the study. The treatments consist of control or T1 [ FYM (25 t/ha) + RDF (150:120:100 kg NPK/ha], T2 (T1+ 0.1% Borax ), T3 (T1+ 0.2% Zinc Sulphate), T4 (T1+ 0.2% Manganese Sulphate), T5 (T1+ 0.1% Borax + 0.2% Zinc Sulphate), T6 (T1+ 0.1% Borax + 0.2% Manganese Sulphate), T7 (T1+ 0.2% Zinc Sulphate + 0.2% Manganese Sulphate) and T8 (T1+ 0.1% Borax + 0.2% Zinc Sulphate + 0.2% Manganese Sulphate). Micronutrients spray were done at three different stages for all the micronutrients. First foliar spray was applied at plant establishment stage, second spray at tuber initiation stage and third spray was done at tuber bulking stage. Plant growth parameters yield parameter and quality parameters and soil parameters were studied.Among the treatments, T8 had highest number of leaves per shoot, number of compound leaves per plant and maximum leaf breadth. The highest volume of tuber was observed in T6 and the highest tuber weight was observed in T8 (127.00g). The treatment T8 has highest number of tuber and highest yield per plot in the entire grades. The highest marketable yield was obtained in T8. Treatment T5 has highest dry matter content and lowest non reducing sugar. The lowest reducing sugar was observed in T8 (0.14%). The highest starch content was observed in T7 (21.42 %). Soil analysis revealed that the highest pH was found in T5 (5.37) which was at par with T8 (5.36) and T6 (5.34). The effect of different treatments was found non-significant for organic carbon and organic matter. Treatment T1 has highest post-harvest N and P content. The maximum amount of K content was observed under treatment T2. The largest amount of Zn was observed in T5. From the present study it can be concluded that for growth parameters T8 was found to be best, for yield attributes T6 was found to be the best and for quality parameters T5 was found to be the best with high dry matter content and less sugar.ennullThesis