ROLE OF ORGANIC FERTILIZER SOURCE AND MINERAL FERTILIZER LEVELS ON SOME GROWTH INDICATORS AND YIELD OF POTATO (Solanum tuberosum L.)

Abstract

A field experiment was carried out in Jadiriya cumpas college of Agricultural engineering sciences – Baghdad University in autumn season 2017-2018 to study the effect of two factors, the first factor include five sources of manure O0 (without adding) O1 (cow residue), O2 (maize shells) O3(sugar cane) and O4 (Nile flower) with rate 30 ton h-1 , and the second factor included was application of three level of mineral fertilizer M0 (without adding) M1 (120 kg N + 60 kg P + 200 kg K) , M2 (240 kg N + 120 kg P + 400 kg K) kg h-1 on the growth and yield of potato, the experiment was laid out in a Randomized Complete Block Design (RCBD) with three replicates, at the maturity stages were done measuring the plant height, dry weight of shoot, tuber weight, yield of one plant and total yield of tubers, The results analyses indicated that Interaction of organic fertilizer and mineral fertilizer treatment M2O1 had given the highest values of the studied parameters, the height plant was 91.46 cm, dry weight of shoot was 8.24 ton h-1 , tuber weight was 169.93 gm tuber-1 , yield of one plant was 1068.99 gm plant-1 and total yield of tubers was 57.06 ton h-1.