Abstract: Nutrients variation studies were conducted to understand the nutrient cycle (particularly nitrogen, phosphorus and cations) in four year old Acacia plantation ( Acacia nilotica and Acacia ampliceps) and the impact of salinity on nutrient cycling. Leaf samples were collected around the umbrella of 10 trees of each Acacia for nutrient content at the interval of two months. Soil salinity in the immediate proximity of the tree trunk was also monitored. Analytical results showed that both the species had adequate amount of nitrogen and phosphorus. Potassium was also near the critical levels. However, the Ca content was comparatively higher, which might be due to presence of organic acids during decomposition of organic residues present at the soil surface. Studies on monthly variation in mineral elements suggested that only single time period for sampling to study the nutrient status or scheduling time of fertilizer application is not appropriate. Therefore, the best time for studying nutrient status and fertilizer application would be during March-April or September-October, when the weather is mild and salinity is moderate.