The Macronutrients Status of Long Term  Tea Cultivated Soils in Dibrugarh and  Sivasagar Districts of Assam , India

Dr. Tara Nath Nath

Volume : II, Issue : V, May - 2013

The Macronutrients Status of Long Term Tea Cultivated Soils in Dibrugarh and Sivasagar Districts of Assam , India

Dr. Tara Nath Nath

Abstract :

In the present study macronutrients (NPK) were analyzed with some other physico–chemical properties of soils of tea estates. The study was carried out during the year 2007 to 2010. A total of 180 composite soil samples from soil depths of 0–15 cm(surface) and 15–30 cm (subsurface I) and 30–60 cm (subsurface II) were collected from 20 tea estates. The samples were analyzed for texture, pH, total organic matter, nitrogen, phosphorous, and potassium. Soils of tea estates were sandy loam in texture at the depth of 0–15cm with an acidic in nature having pH 4.48 to 5.62 .At the depth of 0–15, 15–30 and 30–60 cm soils were sufficient in organic matter with ranged of 1.87 to 3.60, 1.19 to 2.81 and 0.88 to 2.46 % ; total nitrogen content were ranged of 0.167 to 0.340 , 0.102 to 0.260 and 0.073 to 0.228 % ; Available P with ranged 44.00––213.00, 40.33––199.67 and 39.00–188.33 mg/kg and Extractable K with ranged of 2.13––2.97, 2.08––2.93 and 2.01––2.87 meq/kg respectively.