Effect of organic and mineral fertilizer on the yield of Cauliflower and nutrient content of Nitrogen, Phosphorus and Potassium.
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An experiment was conducted in one eld of Co11a ge of Agriculture - Baghdad University during 20 I I - 20 L gm 'Ing eason in a silty clay lo am soil to study the effect of added organic and mineral fertilizers in the yield of Cauliflower cv. (Sol.d snow) and concentration of nutrients N, P and K within randomized complete block desiW'l (RCBD) for fertiiization following transactions: one level of organic :fe rtilizer 1200 kg. ha 1 using fertilizer (Ho mobakter A}added before plantiJ!)g mixing with surface soil (0- 10 cm) and tow Levels of mineral fertilizers incluing half recommended levels of N 1 P, K; 120, 40 , 60 and complete level; 240 , 80, 120 Kg/ hectar, respectively. · Results showed a significant increase in the concentration of nutrients N, P and K in flower tablets of cauliflower plant with organic fertilizer addition as compared to untreated plants with increment percentage of 14.67, 14.28 and 7.70 % for these nutrients respectively. In addition , conc entrations of N, P and K increased by 28.76, 21.05 and 30.58 % for half recommended fertilizers levels and 40.27 , 31.57 and 41.75 % for complete recommended levels. Yield of flower tablets also increased with organic fertilizer addition by 40.89 % a d by 57.62, 97.66 % for half and complete mineral fertilizers addition, respec tively. The recommendation under the condition of this study was half mineral fertilizers levels can be reduced by organic fertilizers addition.
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