Effect of organic and mineral fertilizer on the yield of Cauliflower and nutrient content of Nitrogen, Phosphorus and Potassium.

Abstract

An experiment was conducted in one field of Collage of Agriculture – Baghdad University during 2011 - 2012 growing season in a silty clay loam soil to study the effect of added organic and mineral fertilizers in the yield of Cauliflower cv. Sold snow and concentration of nutrients N, P and K . within randomized complete block design (RCBD) for fertilization following transactions: one level of organic fertilizer 1200 kg. ha-1 using fertilizer (Homobakter A) added before planting mixing with surface soil (0-10 cm) and tow Levels of mineral fertilizers, half recommended levels (120 , 40 , 60 ) Kg N , P , K . ha-1 and complete level (240 , 80 , 120) Kg N , P , K . ha-1 respectively . Results showed a significant increase in the concentration of nutrients NPK in flower tablets of cauliflower plant with organic fertilizer addition as compared to untreated plants the increment were 14.67 , 14.28 and 7.70 % for these nutrients respectively . Also concentrations of N , P and K had been increase as mineral fertilizers in crease 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 % and 57.62 , 97.66 % for half and complete mineral fertilizers addition respectively . The recommendation under the condition of this study was half mineral fertilizers levels can be reduced by organic fertilizers addition.