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Effects of nitrogen and potassium fertilizer application on Drechslera spp. and Puccinia coronata on perennial ryegrass (Lolium perenne) foliage.
- Source :
-
Plant Pathology . Jun1982, Vol. 31 Issue 2, p123-131. 9p. - Publication Year :
- 1982
-
Abstract
- In a field experiment nitrogen (N) fertilizer was applied to small plots of perennial ryegrass (Lolium perenne) at rates equivalent to 0, 200, 400 and 600 kg N/ha/yr at each of two levels of potassium (K) 0 and 200 kg K/ha/yr. Plots were cut at 6-week intervals during 1977-79 and dry matter yield was determined. Water-soluble carbohydrate and N content of the foliage were measured at three harvests in 1977. The incidence and severity of Drechslera spp. were assessed at and between harvests; attack by Puccinia coronata was assessed each autumn. Most foliar damage was caused by Drechslera spp. This was increased by N application which also altered the relative proportions of the Drechslera spp. present. K application had no apparent effect on disease incidence. Puccinia coronata was more prevalent on older leaves and on one occasion its incidence was increased by N application. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00320862
- Volume :
- 31
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Plant Pathology
- Publication Type :
- Academic Journal
- Accession number :
- 19072044
- Full Text :
- https://doi.org/10.1111/j.1365-3059.1982.tb02820.x