5th International Young Scientist Congress (IYSC-2019).  International E-publication: Publish Projects, Dissertation, Theses, Books, Souvenir, Conference Proceeding with ISBN.  International E-Bulletin: Information/News regarding: Academics and Research

Effects of graded nitrogen levels on leaf nitrogen content of cordyline (Cordyline fruticosa var. ‘purple compacta’) in Batticaloa district, Sri Lanka

Author Affiliations

  • 1Department of Crop Science, Faculty of Agriculture, Eastern University, Vantharumoolai, Sri Lanka
  • 2Department of Crop Science, Faculty of Agriculture, Eastern University, Vantharumoolai, Sri Lanka
  • 3Department of Crop Science, Faculty of Agriculture, Eastern University, Vantharumoolai, Sri Lanka

Res. J. Agriculture & Forestry Sci., Volume 6, Issue (7), Pages 7-9, July,8 (2018)

Abstract

Cordyline is a famous foliage plant with great demand in the global markets as cut decorative foliage. Nitrogen has significant effects on the leaf nitrogen content of foliage plants. A shade house (50%) experiment was carried out to determine the effects of graded nitrogen levels on the leaf nitrogen content of cordyline (Cordyline fruticosa, variety ‘purple compacta’) plants in the Eastern University, Sri Lanka from July 2017 to November 2017. Completely randomized design was used as experimental arrangement. Five treatments were defined viz. 0.5(T1), 1.0 (T2), 1.5 (T3), 2.0 (T4) and 2.5 (T5) g nitrogen/plant/month (g/p/m) and each treatment consisted of twenty replications. Phosphorous and Potassium levels were kept constant throughout the experiment. Urea was used as a nitrogen source. Urea was applied at monthly interval as a split application. Agronomic practices were done uniformly for all treatments according to the recommendations. Leaf nitrogen content was measured by SPAD meter at monthly interval. Measured data was analysed significantly (p < 0.05) by performing Analysis of Variance to determine significant differences among treatments. Results shown that plants belong to T1 (nitrogen level 0.5g/p/m) showed significantly (p < 0.05) higher leaf nitrogen content (SPAD value), while the lowest leaf nitrogen content was observed in T5 at 3 months after transplanting. From this study, it was found that, leaf nitrogen content decreased with increasing level of nitrogen application in Cordyline fruticosa var. ‘purple compacta’ at 50% shade level.

References

  1. Anderson N.O. (1976)., Flower Breeding and Genetics., Online at: https://link.springer.com/book/10.1007/978-1-4020-4428-1?page=1
  2. Ahmed S., Ahmed F., Hussai F. and Hussain M. (2003)., Effect of different NPK levels on the growth and yield of kohlrabi (Brassica cauloropa L.) at northern areas of Pakistan., Asian Journal of Plant Sciences, 2(3), 336-338.
  3. Anonymous (2017)., Chlorophyll., Online at: https:/en.m.wikipedia.org/wiki/Chlorophyll. (Accessed on 30th August 2017).
  4. Ishikawa S., Ando S., Sakaigaichi T., Terajima Y. and Matsuoka M. (2009)., Effects of high nitrogen application on the dry matter yield, nitrogen content and nitrate-N concentration of sugarcane., Soil science and plant nutrition, 55(4), 485-495.
  5. Koning L.A., Veste M., Freese D. and Lebzien S. (2015)., Effects of nitrogen and phosphate fertilization on leaf nutrient content, photosynthesis, and growth of the novel bioenergy crop Fallopia sachalinensis cv. ‘Igniscum Candy’., Journal of Applied Botany and Food Quality, 88, 22-28.
  6. Singh Minu, Masroor M., Khan A. and Naeem M. (2014)., Effect of nitrogen on growth, nutrient assimilation, essential oil content, yield and quality attributes in Zingiber officinale Rosc., Journal of Plant Physiology, Department of Botany.
  7. Krishnakanth M., Srikrishnah S. and Sutharsan S. (2017)., Effects of graded shade levels on the growth and quality of Cordyline fruticosa var. ‘purple compacta’ in the Batticaloa district., Journal of Agricultural Sciences, 11(1), 17-24.
  8. Anonymous (2017)., Ramya Horticulture., Cordyline fruticosa, ‘Purple Compacta’. Online at: http://www.ramyahorticulture.com/. (Accessed on 30th August 2017).
  9. Muchow R.C. and Sinclair T.R. (1994)., Nitrogen response of leaf photosynthesis and canopy radiation use efficiency in field grown maize and sorghum., Crop Sci, 34(3), 721-727.
  10. Evans H.J. (1989)., Photosynthesis and nitrogen relationship in leaves of C3 plants., Oecologia, 78, 9-19.
  11. Yoder B.J. and Pettigrew-Crosby R.E. (1995)., Predicting nitrogen and chlorophyll content and concentrations from reflectance spectra (400–2500 nm) at leaf and canopy scales., Remote sensing of environment, 53(3), 199-211.
  12. Evans J.R. (1983)., Nitrogen and photosynthesis in the flag leaf of wheat (Triticum aestivum L.)., Plant Physiology, 72, 297-302.
  13. Tucker M. (2004)., Primary Nutrients and Plant Growth., Essential Plant Nutrients (SCRIBD, Ed.). North Carolina Department of Agriculturae.
  14. Daughtry C.S.T., Walthall C.L., Kim M.S., De Colstoun E.B. and McMurtrey Iii J.E. (2000)., Estimating corn leaf chlorophyll concentration from leaf and canopy reflectance., Remote sensing of Environment, 74(2), 229-239.
  15. Onyango M.A. (2002)., Effect of nitrogen on leaf size and anatomy in onion (Allium cepa L.)., East African Agriculture and Forestry Journal, 68(2), 73-78.
  16. Britto D.T. and Kronzucker H.J. (2002)., NH4+ toxicity in higher plants: a critical review., Journal of Plant Physiology, 159(6), 567-584.
  17. Debaeke P., Aussenac T., Fabre J.L., Hilaire A., Pujol B. and Thuries L. (1996)., Grain nitrogen content of winter bread wheat (Triticum aestivum L.) as related to crop management and to the previous crop., European Journal of Agronomy, 5(3-4), 273-286.