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Effects of nitrogen applied through new carriers on yield and quality of sugarcane

Published online by Cambridge University Press:  27 March 2009

R. L. Yadav ,
R. Kumar  and
R. S. Verma
R. L. Yadav
Affiliation:
Indian Institute of Sugarcane Research, Lucknow 226002, India
R. Kumar
Affiliation:
Indian Institute of Sugarcane Research, Lucknow 226002, India
R. S. Verma
Affiliation:
Indian Institute of Sugarcane Research, Lucknow 226002, India
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Summary

In a field experiment at Lucknow in 1985/87 and 1986/88, the ‘new’ N carriers urea super granules (USG), neem-cake-coated urea (NCU) and dicyandiamide-treated urea (DCD) and the traditional source of N, prilled urea (PU), were used to supply 150 kgN/ha to the plant crop (first crop after planting) of the cultivar Col 148. The ratoon crop was fertilized at 0 and 150 kgN/ha with PU over all the plant crop treatments. In both plant and ratoon crops, N application increased cane yields but decreased quality: differences in yield resulting from use of the new carriers were not significant, though the fertilizers tended to increase the final plant population density. Uptake and recovery of N were significantly greater using USG, NCU and DCD than using PU. The direct effect of N was 184 kg cane/kg of N applied to the ratoon crop but residual and cumulative effects of N applied to the plant crop on yield and quality of the ratoon crop were small. Adequate direct application of N is therefore suggested for increasing the yields of ratoon cane.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 114 , Issue 2 , April 1990 , pp. 225 - 230
Copyright
Copyright © Cambridge University Press 1990

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References

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