Abstract
Silvopastoral systems involving poplars are widespread in rural landscapes in a number of regions of New Zealand. The effect of widely spaced trees of Populus nigra × P. maximowiczii, aged 8–11 years, on the growth and botanical composition of understorey pasture mixes was determined over 3 years at a southern North Island hill country site. Pasture mixes comprised existing pasture, and two introduced test swards comprising new grass (Agrostis capillaris, Dactylis glomerata, Lolium perenne) and legume (Lotus uliginosus, Trifolium repens) cultivars. Pasture accumulation beneath trees (6.6 t DM ha−1 year−1) was 23% less than open (unshaded, no trees) pasture (8.6 t DM ha−1 year−1) and differences in accumulation occurred between tree aspects (North and South sides of trees) when trees were foliated. In early spring, North plots produced 11–14% more herbage than South plots whereas in late summer, South plots produced up to 44% more herbage than North plots. Yield of both test swards (6.4 and 8.0 t DM ha−1 year−1) was not significantly different from that of the existing sward (7.4 t DM ha−1 year−1) but productivity varied between swards in spring and summer. One test sward included Lotus uliginosus cv. Grasslands Maku, and the sward produced 30% more DM than the other swards in mid-summer. Dactylis glomerata cv. Grasslands Wana comprised 37% of the DM of swards in which it was sown and was the most successful cultivar, followed by Grasslands Maku. Both cultivars are recommended for silvopastoral systems where pasture is lightly grazed.
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References
D.J. Barker C.B. Anderson N. Dymock (1991) ArticleTitle‘Grasslands Wana’ cocksfoot persistence and autumn/winter production in hill country, under contrasting managements and microtopographies N Z J. Agric. Res. 34 25–30
D.J. Barker J.A. Lancashire C. Meurk (1985) ArticleTitle‘Grasslands Wana’ cocksfoot – an improved grass suitable for hill country Proc. N Z Grassland Assoc. 46 167–172
J.C. Caradus D.R. Woodfield (1996) ArticleTitleWorld checklist of white clover varieties II N Z J. Agric. Res. 40 115–206
Chapman D.F. and Macfarlane M.J. 1985. Pasture growth limitations in hill country and choice of species. In: Burgess R.E. and Brock J.L.Using Herbage Cultivars. Grassland Research and Practice Series no. 3 New Zealand Grassland Association, pp 25–29.
J.F.L. Charlton A.V. Stewart (1999) ArticleTitlePasture species and cultivars used in New Zealand–a list Proc. N Z Grassland Assoc. 61 147–166
D.C. Corson G.C. Waghorn M.J. Ulyatt J. Lee (1999) ArticleTitleNIRS: Forage analysis and livestock feeding Proc. N Z Grassland Assoc. 61 127–132
N.R. Devkota P.D. Kemp I. Valentine J. Hodgson (1998) ArticleTitlePerformance of perennial ryegrass and cocksfoot cultivars under tree shade Proc. Agron. Soc. N Z 28 129–135
G.B. Douglas A.S. Walcroft B.J. Wills S.E. Hurst A.G. Foote K.D. Trainor L.E. Fung (2001) ArticleTitleResident pasture growth and the micro-environment beneath young, wide-spaced poplars in New Zealand Proc. N Z Grassland Assoc. 63 131–138
Douglas G.B., Walcroft A.S., Hurst S.E., Potter J.F., Foote A.G., Fung L.E., Edwards W.R.N. and van den Dijssel C. 2005. Interactions between widely spaced young poplars (Populus spp.) and the understorey environment. Agroforestry Sys.
GENSTAT 2002. Release 6.2 (PC/Windows XP). Lawes Agricultural Trust (Rothamsted Experimental Station).
Gilchrist A.N., deZ Hall J.R., Foote A.G. and Bulloch B.T. 1993. Pasture growth around broad-leaved trees planted for grassland stability. In: Session56: Silvilpastrol Systems, Proceedings of the XVII International Grassland Congress, 18–21 February 1993 Rockhampton, Australia. Volume III pp 2062–2063.
A. Guevara–Escobar P.D. Kemp J. Hodgson A.D. Mackay W.R.N. Edwards (1997) ArticleTitleCase study of a mature Populus deltoides–pasture system in a hill environment Proc. N Z Grassland Assoc. 59 179–185
M.F. Hawke (1991) ArticleTitlePasture production and animal performance under pine agroforestry in New Zealand Forest Ecol. Manag. 45 109–118
J. Hodgson I.M. Brookes (1999) Nutrition of grazing animals J. White J. Hodgson (Eds) New Zealand Pasture and Crop Science Oxford University Press Auckland 117–132
A. Hopkins A. Scott D.A. Costall M.G. Lambert B.D. Campbell (1993) ArticleTitleDistribution of diploid and tetraploid Lotus pedunculatus plants in moistNorth Island hill country N Z J. Agric. Res. 36 429–434
E. McGregor A. Mackay M. Dodd P. Kemp (1999) ArticleTitleSilvopastoralism using tended poplars on New Zealand hill country: the opportunities Proc. N Z Grassland Assoc. 61 85–89
N.S. Percival M.F. Hawke (1985) ArticleTitleAgroforestry development and research in New Zealand N Z Agric. Sci. l9 86–92
P.L. Peri A.C. Varella R.J. Lucas D.J. Moot (2001) ArticleTitleCocksfoot and lucerne productivity in a Pinu radiata silvopastoral system: a grazed comparison Proc. N Z Grassland Assoc. 63 139–147
J.E. Radcliffe (1974) ArticleTitleSeasonal distribution of pasture production in New Zealand I. Methods of measurement N Z J. Exp. Agric. 2 337–340
W.C. Rijkse (1977) Soils of Pohangina county, North IslandNew Zealand Q.W. Heine (Eds) Soil Bureau Bulletin No. 42 Department of Scientific and Industrial Research New Zealand 70
G.C. Waghorn G.B. Douglas J.H. Niezen W.C. McNabb A.G. Foote (1998) ArticleTitleForages with condensed tannins – their management and nutritive value for ruminants Proc. N Z Grassland Assoc. 60 89–98
G.G. West M.G. Dean N.S. Percival (1991) ArticleTitleThe productivity of Maku lotus as a forest understorey Proc. N Z Grassland Assoc. 53 169–173
A.G. Wilkinson (1995) ArticleTitlePoplars and willows for soil erosion control in New Zealand Pak J. Forestry 45 114–127
I.A.M. Yunusa D.J. Mead K.M. Pollock R.J. Lucas (1995) ArticleTitleProcess studies in a Pinus radiata pasture agroforestry system in a subhumid temperate environment. I. Water use and light interception in the third year Agroforestry. Sys. 32 163–183
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Douglas, G.B., Walcroft, A.S., Hurst, S.E. et al. Interactions between Widely Spaced Young Poplars (Populus spp.) and Introduced Pasture Mixtures. Agroforest Syst 66, 165–178 (2006). https://doi.org/10.1007/s10457-005-6641-5
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DOI: https://doi.org/10.1007/s10457-005-6641-5