Effects of spring grazing on dryland perennial ryegrass/white clover dairy pastures. 2. Botanical composition, tiller, and plant densities

Australian Journal of Agricultural Research

Volumn 57, Issue 5, 2006, Pages 555-563

  McKenzie, F R ^a   Jacobs, J L ^a   Kearney, G ^a  

^a DEPARTMENT OF PRIMARY INDUSTRIES   (Australia)

Author keywords

Dry matter content; Lolium perenne; Persistence; Plant frequency; Tiller density; Trifolium repens

Indexed keywords

DRYLAND FARMING; GRAZING MANAGEMENT; PASTURE; WEED;

AUSTRALASIA; AUSTRALIA; VICTORIA [AUSTRALIA];

EMBRYOPHYTA; HOLCUS; HOLCUS LANATUS; LOLIUM; LOLIUM PERENNE; POA; POA ANNUA; POACEAE; RUMEX; TARAXACUM OFFICINALE; TRIFOLIUM; TRIFOLIUM REPENS;

EID: 33646832021     PISSN: 00049409     EISSN: None     Source Type: Journal    
DOI: 10.1071/AR05024     Document Type: Article

References (25)

1. Barker DJ, Chu ACP, Korte CJ (1985) Some effects of spring defoliation and drought on perennial ryegrass swards. Proceedings of the New Zealand Grassland Association 46, 57-63.
2. Brougham RW (1959) The effects of frequency and intensity of grazing on the productivity of a pasture of short-rotation ryegrass and red and white clover. New Zealand Journal of Agricultural Research 2, 1232-1248.
3. Chapman DF, Clark DA, Land CA, Dymock N (1983) Leaf and tiller growth of Lolium perenne and Agrostis spp. and leaf appearance rates of Trifolium repens in set-stocked and rotationally grazed hill pastures. New Zealand Journal of Agricultural Research 26, 159-168.
4. Doyle PT, Stockdale CR, Lawson AR (2000) 'Pastures for dairy production in Victoria.' (Rodney Printers: Tatura, Vic.)
5. Fulkerson WJ, Slack K (1994) Leaf number as a criterion for determining defoliation time for Lolium perenne: 1. Effect of water-soluble carbohydrates and senescence. Grass and Forage Science 49, 373-377.
6. GenStat Committee (2003) 'GENSTAT Release 7.1.' (VSN International Ltd: Oxford)
7. Grant SA, Barthram GT, Torvell L (1981) Components of regrowth in grazed and cut Lolium perenne swards. Grass and Forage Science 36, 155-168.
8. Harris W, Brougham RW (1968) Some factors affecting change in botanical composition in a ryegrass-white clover pasture under continuous grazing. New Zealand Journal of Agricultural Research 11, 15-38.
9. Harris W, Thomas VJ (1972) Competition among pasture plants. 2. Effects of frequency and height of cutting on competition between Agrostis tenuis and two ryegrass cultivars. New Zealand Journal of Agricultural Research 15, 19-32.
10. Jacobs JL, Rigby SE, McKenzie FR, Ward GN (1999) Changes in botanical composition and nutritive characteristics of pasture, and nutrient selection by dairy cows grazing rainfed pastures in western Victoria. Australian Journal of Experimental Agriculture 39, 419-428. doi: 10.1071/EA98161
11. Korte CJ, Watkin BR, Harris W (1982) Use of residual leaf area index and light interception as criteria for spring grazing management of a ryegrass dominant pasture. New Zealand Journal of Agricultural Research 25, 309-319.
12. Korte CJ, Watkin BR, Harris W (1984) Effect of the timing and intensity of spring grazings on reproductive development tillering and herbage production of perennial ryegrass dominant pasture. New Zealand Journal of Agricultural Research 27, 135-149.
13. Korte CJ (1986) Tillering in 'Grasslands Nui' perennial ryegrass swards. 2. Seasonal pattern of tillering and age of flowering tillers with two mowing frequencies. New Zealand Journal of Agricultural Research 28, 437-447.
14. Langer RHM (1972) 'How grasses grow.' (Edward Arnold: London)
15. Lawson A, Kelly K, Sale PWG (1997) Effect of defoliation frequency on an irrigated perennial ryegrass pasture in Northern Victoria. 2. Individual plant morphology. Australian Journal of Agricultural Research 48, 819-829. doi: 10.1071/A96089
16. L'Huillier PJ (1987) Tiller appearance and death of Lolium perenne in mixed swards grazed by dairy cattle at two stocking rates. New Zealand Journal of Agricultural Research 30, 15-22.
17. McKenzie FR, Jacobs JL (2003) Effects of grazing frequency and intensity in summer and spring on the maintenance of productive pastures - persistence and density of sown species. Final Report to Dairy Australia, Project No. DAV426.
18. McKenzie FR, Jacobs JL, Kearney G (2002) The long-term impact of nitrogen fertiliser on perennial ryegrass tiller densities and white clover growing points in grazed dairy pastures in southwestern Victoria. Australian Journal of Agricultural Research 53, 1203-1209. doi: 10.1071/AR02020
19. McKenzie FR, Jacobs JL, Ward G (2004) Dairy pasture yield and growth responses to summer and spring grazing. Proceedings of the New Zealand Agronomy Society 34, 21-30.
20. McKenzie FR, Jacobs JL, Kearney G (2006) Effects of spring grazing on dryland perennial ryegrass/white clover dairy pastures. 1. Pasture accumulation rates, dry matter consumed and nutritive characteristics. Australian Journal of Agricultural Research 57, 543-554.
21. McWilliam JR (1978) Responses of pasture plants to temperature. In 'Plant relations in pastures'. (Ed. JR Wilson) pp. 17-34. (CSIRO: East Melbourne, Vic.)
22. Riffkin P, Quigley P, Cameron F (1997) Improving the white clover feedbase by optimising nitrogen fixation. Final Report DAV313, Dairy Research and Development Corporation, Australia.
23. Thom ER, Sheath GW, Bryant AM, Cox NR (1986) Renovation of pastures containing paspalum. 3. Effect of defoliation management and irrigation on ryegrass growth and persistence. New Zealand Journal of Agricultural Research 29, 599-611.
24. Thom ER (1991) Effect of early spring grazing frequency on the reproductive growth and development of a perennial ryegrass tiller population. New Zealand Journal of Agricultural Research 34, 383-389.
25. Verbyla AP, Cullis BR, Kenward MG, Welham SJ (1999) The analysis of designed experiments and longitudinal data by using smoothing splines. Applied Statistics 48, 269-311.