Effect of Long Term Fertilization on Depth Wise Distribution of Micronutrients In Soil Munawery Atheefa, Yogananda S. B., Parama V.R. Ramakrishna, Munawery Ayeesha, Ashoka K.R., Vasuki N. University of Agricultural Sciences, Bangalore, email: ayeefa106@gmail.com Online published on 23 December, 2016. Abstract The long term fertilizer experiment was started in 1986–87 with fingermillet-maize cropping sequence. The soil was sandy clay loam with pH of 6.17 and initial N, P and K content of soil 256.7, 34.3 and 123.1 kg ha−1 respectively. The surface and sub-surface soil samples (0–15, 15–30 and 30–45 cm) were collected after 20th cycle and analysed for available micronutrients. The results indicated a decrease in all micronutrient content with the depth. The treatments T8(100%NPK+FYM) and T10 (100% NPK+FYM+Lime) recorded significantly highest zinc content compared to other treatments, whereas available iron was lowest in T10 due to application of lime. The available copper andmanganese was highest in T6 (100%NP) and T7 (100% N) respectively. The available copper, zinc, iron and manganese were found to be negatively correlated with pH, exchangeable calcium and magnesium but positively correlated with exchangeable acidity. Significant positive correlation was recorded only with available zinc inspite of phosphorus build up. Top Keywords Long term fertilizer experiment, micronutrient, NPK, Fingermillet-maize sequence, FYM, Lime. Top |