Vol. 7, Issue 4 (2019)
Geospatial distribution of boron in major banana growing soils of Theni district, Tamil Nadu
Author(s): S Suganya, PP Mahendran, P Saravana Pandian, P Kannan, G Balasubramanian and R Babu
Abstract: The present study was undertaken to assess the status of hot water soluble boron (HWS-B) in the major banana growing blocks of Theni district, Tamil Nadu. A total of 720 geo referenced surface (0-15 cm) and subsurface soil samples (15-30 cm) were collected from four blocks viz., Cinnamanur, Cumbum, Uthamapalayam and Periyakulam and analyzed for basic soil properties and hot water soluble boron. Simple correlation was worked out to ascertain the degree of relationship between soil properties and HWS-B content of soils of study area. HWS-B in the entire banana growing soils ranged from 0.11 to 3.56 mg kg-1, 0.03 to 2.28 mg kg-1 in surface and subsurface soil samples respectively. The results revealed that 38.61 per cent of the soils were deficient in available B while 35.83 and 25.55 per cent soils were medium and high in available B in surface soil samples. In subsurface samples 42.50 per cent of the soils were deficient in B while 30.55 and 24.16 per cent soils were medium and high in available B. As per the nutrient index study, the soils of study area recorded marginal to high fertility rating for available B and the mean nutrient index value (NIV) ranged from 1.81 to 1.91 and 1.72 to 1.88 in surface and subsurface samples respectively. Among the soil properties, EC, SOC, clay, silt and CEC had a positive influence on the availability of B whereas, total sand, pH, CaCO3, Fe2O3, Al2O3 and R2O3 contents had negative impact on available boron. The step-wise multiple regression equation indicated that 46.20 per cent variation in available B was observed due to pH, EC, SOC, CEC, Fe2O3,Al2O3 and silt content in surface soil samples whereas in subsurface soil samples pH, EC, SOC, Al2O3, total sand and clay accounted 53.90 per cent variation in available B.
Pages: 2934-2939 | 268 Views 64 Downloads
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How to cite this article:
S Suganya, PP Mahendran, P Saravana Pandian, P Kannan, G Balasubramanian, R Babu. Geospatial distribution of boron in major banana growing soils of Theni district, Tamil Nadu. Int J Chem Stud 2019;7(4):2934-2939.
