The role of organic fertilizer source and mineral fertilizer level on the availability of some nutrients, growth and yield of potato (Solanum tuberosum L.)

Abstract

Abstract:

     A field experiment was carried out  in one of the fields of the Faculty of Agriculture - Baghdad University - in autumn season 2018-2017 To study the effect of two factors, the first is sources of organic fertilizer In a quantity of 30 ton h-1 With four sources O0 (without adding) O1 (cow residue), O2(maize shells) O3(sugar cane) And O4 (Nile flower) and the second factor included the application three level of the  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) in the growth and yield of potatoes,  the experiment was layed out in a Randomized Complete Block Design (RCBD) with three replication, At maturity, plant height, weight of one tuber, yield of one plant, and total yield were measured data statistically analyzed and compared the averages of treaments were compared using the less signification difference test(LSD)  at the level of probability 0.05. The results indicated that Interaction of organic fertilizer and mineral fertilizer treatment M2O1 was obtained the highest values of the study parameters,The height of the plant is 91.46 cm, the average weight of one tuber is 169.93 g tuber-1, the yield of one plant is 1069.99 g tuber-1, and the total yield of tubers is 57.06 ton h-1. The treatment of organic fertilization (cows) was out per formed other than treatments of sugar cane, maize shells and Nile flower.