Vol. 7, Issue 1 (2019)
Available sulphur and micronutrients status in the soils of the Nilgiris district, Tamil Nadu, India
Author(s): Chitdeshwari T, D Jegadeeswari and Arvind Kumar Shukla
Abstract: A soil resource inventory was conducted at village level in all the blocks of The Nilgiris district, Tamil Nadu for assessing the secondary and micronutrient fertility in the soils. About 152 surface soil samples were collected at 4 samples / village in all the blocks along with geo coordinates and analysed for various soil physico-chemical properties, available sulphur and micronutrients (Zn, Fe, Cu, Mn and B) by adopting standard procedures. Based on the nutrient availability, the soils were grouped into deficient or sufficient category using the critical limits established for Tamil Nadu soils. Per cent sample deficiency status in each block was worked out at block level to understand the extent of sulphur and micronutrient deficiency to make suitable recommendations. The overall soil reaction (pH) of The Nilgiris district ranged from 4.10 to 7.90 with a mean of 5.68, indicating that the soils are acidic to neutral in nature. Most of the samples were reported to contain low salt status with a mean EC of 0.31 dS m-1, rich in organic matter (>0.75%) and non calcareous in nature. The soils were predominantly Zn deficient in all the blocks with the overall per cent deficiency of 55.4. Next to Zn, Cu deficiency was observed in the soils to the tune of 21.3%, followed by B (15.8 %). None of the samples were deficient in Fe and Mn but S deficiency was noted to an extent of 5.83%. Similarly fertility rating of the soils computed indicated that the district has marginal Zn and B, adequate Cu, high S and very high Fe and Mn in the soils.
Pages: 1297-1300 | 474 Views 168 Downloads
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How to cite this article:
Chitdeshwari T, D Jegadeeswari, Arvind Kumar Shukla. Available sulphur and micronutrients status in the soils of the Nilgiris district, Tamil Nadu, India. Int J Chem Stud 2019;7(1):1297-1300.
