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The response of Italian ryegrass to nitrogenous fertilizer at different times of year, with particular reference to residual effects

Published online by Cambridge University Press:  27 March 2009

D. Wilman  and
B. M. Ojuederie
D. Wilman
Affiliation:
Department of Agriculture, University College of Wales, Aberystwyth
B. M. Ojuederie
Affiliation:
Department of Agriculture, University College of Wales, Aberystwyth
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Summary

The 32 combinations of applying or not applying nitrogenous fertilizer on five dates, with 6-week intervals between dates, during one treatment year were compared in three field experiments with Italian ryegrass (Lolium mvltiflorum). Phosphorus (P)and potassium (K) were applied at a uniform, high rate to all plots. All plots were harvested, by cutting, five times during the treatment year and once in May of the subsequent year.

Dry-matter yields and dry-matter yield responses to N were lower at the September and October harvests than at the May, June and July harvests. Where no N was applied 6 weeks before a harvest, N applied 12 weeks before that harvest generally increased yields of dry matter, N, P and K. On the other hand, where N was applied 6 weeks before a harvest, N applied 12 weeks before that harvest tended not to increase dry-matter yield and tended to reduce P and K yields. Applying 420 kg N/ha/year compared with nil approximately trebled the amounts of dry matter, P and K harvested in the treatment year. At the May harvest in the subsequent year dry-matter yield was increased by N applied in the treatment year, for all five application dates, although the previous autumn there had been no positive residual effect of the early applications. Apparent recovery of N was low compared with that recorded with Italian ryegrass in Cambridge. The content of N, as well as P and K, in herbage in May was reduced by the application of N the previous year. In the 1972 experiment the proportion of ‘stem’ in the harvested produce was markedly increased by N application. The size of this effect may have been associated with the rather small amount of soil N available. Applied N increased the number of tillers in the sward, but this effect appeared to be rather short-lived. A major reason for the positive effect of applied N on dry-matter yield, including the positive residual effect, appeared to be the increase in leaf blade length and probably sheath length due to N.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 90 , Issue 3 , June 1978 , pp. 479 - 494
Copyright
Copyright © Cambridge University Press 1978

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References

Agricultural Research Council (1965). The Nutrient Requirements of Farm Livestock, no. 2, Ruminants. Agricultural Research Council, London.Google Scholar
Allison, F. E. (1966). The fate of nitrogen applied to soils. Advances in Agronomy 18, 219–58.Google Scholar
Burg, P. F. J. van (1970). The seasonal response of grassland herbage to nitrogen. Netherlands Nitrogen Technical Bulletin, no. 8. Agricultural Bureau, Netherlands Nitrogen Fertilizer Industry, The Hague.Google Scholar
Clement, C. R. (1971). Residual effects of nitrogen and potassium applied to grass. In Residual Value of Applied Nutrients. Technical Bulletin, Ministry of Agriculture, Fisheries and Food, London, no. 20, pp. 283–95.Google Scholar
Cowling, D. W. & Lockyer, D. R. (1970). The response of perennial ryegrass to nitrogen in various periods of the growing season. Journal of Agricultural Science, Cambridge 75, 539–46.Google Scholar
Davies, Alison (1971). Changes in growth rate and morphology of perennial ryegrass swards at high and low nitrogen levels. Journal of Agricultural Science, Cambridge 77, 123–34.Google Scholar
Faithfull, N. T. (1971). Automated simultaneous determination of nitrogen, phosphorus, potassium and calcium on the same herbage digest solution. Laboratory Practice 20, 41–4.Google Scholar
Kemp, C. D. (1960). Methods of estimating the leaf area of grasses from linear measurements. Annals of Botany New Series 24, 491–9.Google Scholar
Minson, D. J. (1977). Predicting forage intake by laboratory methods. Proceedings XIIIth International Grassland Congress, Leipzig. (In the Press.)Google Scholar
Ojuederie, B. M. (1974). Effects of nitrogenous fertilizer on grass growth. Ph.D. thesis, University College of Wales, Aberystwyth.Google Scholar
Paauw, F. van der (1963). Residual effect of nitrogen fertilizer on succeeding crops in a moderate marine climate. Plant and Soil 19, 324–31.Google Scholar
Prins, W. H. & Burg, P. F. J. van (1977). The residual effect of fertilizer nitrogen on grassland within one growing season. Proceedings XIIIth International Grassland Congress, Leipzig. (In the Press.)Google Scholar
Rudeforth, C. C. (1970). Soils of North Cardiganshire. Harpenden: Soil Survey of England and Wales.Google Scholar
Tilley, J. M. A. & Terry, R. A. (1963). A two-stage technique for the in vitro digestion of forage crops. Journal of the British Grassland Society 18, 104–11.CrossRefGoogle Scholar
Whitehead, D. C. (1970). The role of nitrogen in grassland productivity. Bulletin, Commonwealth Bureau of Pastures and Field Crops, no. 48. Farnham Royal: Commonwealth Agricultural Bureaux.Google Scholar
Wilman, D. (1970). The effect of nitrogenous fertilizer on the rate of growth of Italian ryegrass. 4. Residual effects. Journal of the British Grassland Society 25, 303–8.CrossRefGoogle Scholar
Wilman, D. (1975). Nitrogen and Italian ryegrass. 2. Growth up to 14 weeks: nitrogen, phosphorus and potassium content and yield. Journal of the British Grassland Society 30, 243–9.Google Scholar
Wilman, D. (1977). Some effects of nitrogen supply on grass growth. Proceedings XIIIth International Grassland Congress, Leipzig. (In the Press.)Google Scholar
Wilman, D. (1978). Nitrogen and Italian ryegrass. 5. Growth up to 14 weeks: residual effects. Journal of the British Grassland Society (In the Press.)Google Scholar
Wilman, D., Droushiotis, D., Koocheki, A., Lwoga, A. B. & Shim, J. S. (1976 a). The effect of interval between harvests and nitrogen application on the proportion and yield of crop fractions in four ryegrass varieties in the first harvest year. Journal of Agricultural Science, Cambridge 86, 189–203.CrossRefGoogle Scholar
Wilman, D., Droushiotis, D., Koocheki, A., Lwoga, A. B. & Shim, J. S. (1976 b). The effect of interval between harvests and nitrogen application on the digestibility and digestible yield and nitrogen content and yield of four ryegrass varieties in the first harvest year. Journal of Agricultural Science, Cambridge 86, 393–9.CrossRefGoogle Scholar
Wilman, D., Koocheki, A., Lwoga, A. B., Droushiotis, D. & Shim, J. S. (1976 c). The effect of interval between harvests and nitrogen application on the numbers and weights of tillers and leaves in four ryegrass varieties. Journal of Agricultural Science, Cambridge 87, 45–57.Google Scholar
Wilman, D., Koocheki, A. & Lwoga, A. B. (1976 d). The effect of interval between harvests and nitrogen application on the proportion and yield of crop fractions and on the digestibility and digestible yield and nitrogen content and yield of two perennial ryegrass varieties in the second harvest year. Journal of Agricultural Science, Cambridge 87, 59–74.Google Scholar