EFFECT OF ORGANIC AND MINERAL FERTILIZATION ON SOM GROWTH AND YIELD CHARCTERISTICS OF POTATO Solanumtuberosum L.CV. SAFRANE

Abstract

An experiment was conducted during the spring seasons of 2014 in private field in Babil province , Al-Hashimia district, to study the effect of organic fertilization (Residues of date palm fronds ) included three levels of organic fertilizer ( Zero, 16 , 32 ton.hectar-1) and the mineral fertilization ( N,P,K) included four levels of mineral fertilizer N,P,K ( Zero ,50% , 75% and 100% of the recommended quantity) on some growth and yield characteristics of potato var. Safaran. This experiment was designed according to (R.C.B.D) with three replicates. Using organic and mineral fertilizer showed a significant effect in growth and yield characteristics. . The treatment (32 ton.hectar-1OF.+ 100% of N,P,K ) and (16 ton.hectar-1 OF + 100 % of N,P,K ) gave highest average in the percentage of plant emergence reached 96.88% as compared with control treatment. Also the treatment (32 ton.hectar-1 OF + 100% of N,P,K) gave highest average in number of leaves reached 63.93 as compared with control treatment. While the treatment (16 ton.hectar-1 OF + 100% of N,P,K) and (16 ton.hectar-1 OF + 50 % of N,P,K) gave highest average in total soluble solids reached 6.87 % as compared with control treatment. The treatment(16 ton.hectar-1 OF + 100% of N,P,K) gave highest average in qualitative density of tubers reached 1.86 g/ cm2 as compared with control treatment. The treatment (32 ton.hectar-1 OF + 75% of N,P,K) gave lowest average in percentage of non marketable yield reached 2.75 % as compared with control treatment.