Abstract
Field experiments were conducted for three crop seasons to develop tissue analysis technology for optimizing N fertilization in potato grown under short day conditions in subtropics. Nitrogen deficiencies could be detected as early as 25 days after planting (DAP) by tissue analysis of NO3-N concentration in petioles. Petiolar NO3-N declined sharply with age of the crop from 25 to 60 DAP and was significantly correlated at all stages of growth with applied N and tuber yield of potato. Critical concentrations of Petiolar NO3-N were 1.28, 1.23, 1.07 and 0.96% in an early maturing cv. Kufri Chandramukhi and 2.16, 1.95, 1.40 and 1.18% in a late maturing cv. Kufri Badshah at 25, 40, 50 and 60 DAP, respectively. Optimum yields were obtained when petiolar NO3-N was maintained above critical concentrations through the growth period up to 60 DAP by corrective side dressing of N. Response to corrective side dressing of N decreased with increasing concentration of petiolar NO3-N. Optimum rate of N for side dressing up to 30 DAP was 142, 116, 90, 64 and 37 kg ha−1 for petiolar NO3-N of 0.5, 1.0, 1.5, 2.0 and 2.5%, respectively in Kufri Chandramukhi. Corresponding rates of side dressed N were 183, 164, 146, 127, 108 kg ha−1 in late maturing cv. Kufri Badshah. For optimum yields, fertilization of 80 to 120 kg N ha−1 at the time of planting followed by corrective side dressing as recommended by petiolar tissue analysis is advocated.
Article PDF
Similar content being viewed by others
Explore related subjects
Discover the latest articles, news and stories from top researchers in related subjects.Avoid common mistakes on your manuscript.
References
Chapman HD (1971) Tissue testing: Current status. Proc Int Symp Soil Fert Evaln, New Delhi 1: 165–197
Cooke GW (1972) Fertilizing for Maximum Yield. English Language Book Society, London.
Engel RE and Zubriski JC (1982) Nitrogen concentration in spring wheat at several growth stages. Commun Soil Sci Plant Anal 13: 531
Panse VG and Sukhatme PV (1967) Statistical Methods for Agricultural Workers. Indian Council of Agricultural Research, New Delhi
Sharma RC (1990) Fertilizer management in potato in relation to cultivars. National Seminar Current Facets in Potato Research, pp 43–50. Indian Potato Association, Shimla, India
Sharma RC, Grewal JS and Upadhayay NC (1991) Nitrogen Management in Potato. Central Potato Research Institute, Shimla, Tech Bull 32
Singh JP (1988) A rapid method for determination of nitrate in soil and plant extracts. Plant Soil 110: 137–139
Singh JP (1991) Efficient use of nitrogen in potato through petiole analysis. In: Meelu OP et al. (eds) Macronutrients in Soil and Crops, pp 128–133. Punjab Agricultural University, Ludhiana, India
Ulrich A and Hills FJ (1973) Plant analysis as an aid in fertilizing sugar crops Part 1. Sugarbeets. In: Walsh LM and Beaton JD (eds) Soil Testing and Plant Analysis, pp 271–288. Soil Sci Soc, Madison, WI
Upadhayay NC and Sharma RC (1987) Varietal differences in fertilizer use efficiency of N in potato. J Indian Soc Soil Sci 35: 654–660
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Singh, J.P. Tissue analysis technology for nitrogen fertilization of potato grown under subtropics short day conditions. Fertilizer Research 36, 19–27 (1993). https://doi.org/10.1007/BF00749944
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00749944