Abstract
Ten mid late maturing promising sugarcane clones including three standards were evaluated for major nutrient uptake and use efficiency in ratoon crop grown in a clay soil (Typic Haplustert). Concentration of N, P and K in dry leaves, green tops and stem were determined and their uptake in the individual plant parts, total above ground parts and uptake of nutrients (kg) per tonne of cane produced were computed. Clones differed significantly in N, P and K uptake in dry leaves, green tops, stem and total above ground parts and kg nutrients to produce a tonne of cane. Total N uptake ranged from 50.19 kg/ha in Co 7219 to 84.24 kg/ha in Co 93014. The lowest uptake of N per tonne of cane was 0.812 kg in Co 93009 and the highest was 1.135 kg in Co 93016. Total P uptake varied from 16.09 kg/ha in Co 7219 to 32.01 kg/ha in Co 93009. Uptake of P per tonne of cane varied from 0.297 kg in Co 86032 to 0.449 kg in Co 93016. Total K uptake ranged form 94.80 kg/ha in Co 93010 to 240.03 kg/ha in Co 6304. The lowest and the highest K uptake to produce a tonne of cane were 1.50 kg in Co 93010 and 3.10 kg in Co 6304 respectively. Clones CoG 93076, Co 93010 and Co 93009 were identified for better NPK use efficiency.
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Rakkiyappan, P., Thangavelu, S., Shanthi, R.M. et al. Uptake of major nutrients in above ground parts of promising mid late maturing sugarcane clones. Sugar Tech 7, 67–70 (2005). https://doi.org/10.1007/BF02942420
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DOI: https://doi.org/10.1007/BF02942420