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Journal of Applied and Natural Science
An International Journal | Print ISSN: 0974-9411 | Online ISSN: 2231-5209
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Abstract
Journal of Applied and Natural Science 7 (1): 215–218 (2015)
Soil quality indicators based recommendation to maximize sugarcane productivity in Theni district of Tamil Nadu, India
K. Jeevika*, B. Bakiyathu Saliha1 and M.Vijayakumar2
*Department of Soil Science and Agricultural Chemistry, Vanavarayar Institute of Agriculture, Manakkadavu, Pollachi - 642103 (Tamil Nadu), INDIA
2Department of Soils and Environment, Agricultural College and Research Institute, Madurai - 625104 (Tamil Nadu), INDIA
3Department of Soil science and Agricultural Chemistry, Regional Research Station, Tamil Nadu Agricultural University, Paiyur - 635112 (Tamil Nadu), INDIA
*Corresponding author. E-mail: jeevired5@gmail.com
Abstract : An assessment study was conducted infive sugarcane yielding blocks of theni district viz., Jeyamangalam, P.C.Patti, Chinnamanur, Andipatti and Usilampatti.The cane yielding zones of the district was classified into three categories viz., low yielding (less than 75 t ha-1), medium (75 to 100 t ha-1) and high yielding (more than 100 t ha-1). The key physico-chemical and biological indicators of soil were assessed in the surface (0-15 cm) and subsurface (15-30 cm) soils samples of each zone. The indicators assessed in the low cane yielding zone reflected slightly acidic pH (6.70), lower CEC (11.9 cmol (p+) kg-1) and low organic carbon (0.14 percent). The positive effects of soil physico - chemical and biological indicators on the sugarcane yield was well proved through the yield data of the high yielding zone. Almost 93 percent of the farms surveyed in the high yielding zone registered an average cane yield of 120 t ha-1. This may be attributed to a neutral pH of 7.21, non-saline soil with an average EC of 0.36 dSm-1, maximum organic carbon status (0.59 percent) and higher range of soil Cation Exchange Capacity (CEC) (20 to 58.0 cmol (p+)kg-1) which resulted in maximum cane productivity. Itwas concluded that application of organic matter, amendments rich in calcium and magnesium in acidic soil and application of gypsum and other amendments rich in sulphur in alkali soils of low cane yielding zone can maximize productivity of sugarcane.

Keywords : Biological indicator, Physicochemical indicators, Soil quality, Sugarcane productivity
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