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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 8 (1): 77-79 (2016)
Assessment of nutrient ratios in the leaf of sugarcane grown in Theni district of Tamil Nadu, India
K. Jeevika1*, S. Pragadeesh2 and A. Mohamed Haroon3
1Department of Soil Science and Agricultural Chemistry, Vanavarayar Institute of Agriculture, Manakkadavu, Pollachi - 642 103 (Tamil Nadu), INDIA
2Department of Soil science and Agricultural Chemistry, Thanthai Roever Institute of Agriculture and Rural Development, Perambalur - 621 212 (Tamil Nadu), INDIA
3Department of Soil Science and Agricultural Chemistry, Anbil Dharmalingam Agricultural College and Research Institute, Trichy – 620009 (Tamil Nadu), INDIA
*Corresponding author. E-mail: jeevired5@gmail.com
Abstract : To assess the impact of nutrient ratios N/P, N/K and N/S on sugarcane productivity, a survey was conducted during its grand growth stage (October, November and December) influenced by various yield levels based on soil quality zones in Theni district of Tamil Nadu, India. The leaf samples were collected from 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). Computation of nutrient ratios for sugarcane at its grand growth stage implied that the mean N/P, N/K and N/S ratios 8.31, 1.60 and 15.0 respectively in the third leaf of sugarcane in the high yielding zone resulted in maximum cane yields compared to relatively higher ratios in the top dewlap leaves from soils of low soil quality category which indicates that maintenance of high quality in sugarcane soils influences crop nutrient uptake, optimum nutrient ratios, the yield and quality of sugarcane.

Keywords : Grand growth stage, Nutrient ratio, Sugarcane productivity, Theni district
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