Lucerne in the Pumice Country

Clare, R.J.

doi:10.33584/jnzg.1971.33.1310

Cited by 4 publications

(1 citation statement)

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“…Under cultivated conditions in the central North Island pumice country, luceme (Medicago sativ~L.) yields about twice as much dry matter as mixed grass/clover pasture (Clare 1972;Baars et al 1~~5). On pumice hill country, pasture cornposition deteriorates rapidly (Baars et al 1975) and grass grub (Costelytra zealandica White) can d~vastate sown ryegrass/white cIover pastures, especially on sunny faces (Gordon & Kain 1972).…”

Section: Introductionmentioning

confidence: 99%

Lucerne (Medicago sativaL) establishment on uncultivated pumice hill country

Baars

Douglas

Allan

1982

New Zealand Journal of Experimental Agriculture

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The establishment of luceme oversown into herbicide-treated pasture on steep hill country in the central North Island was investigated in 4 trials. Netting increased establishment and this was probably a result of protection of seeds and seedlings from predation. Trampling seed by stock after sowing improved plant establishment where nets were not used. Trampling seed after sowing was also beneficial where nets were used to control predation but the increased length of cover had a negative effect. Sowings from mi.d-July o~wards gave the most effective plant establishment; lime or seed pelleting generally improved plant establishment with seed pelleting replacing the need for Iime. Overall, however, luceme establishment by oversowing still cannot be achieved with complete reliability.

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Section: Introductionmentioning

confidence: 99%

Lucerne (Medicago sativaL) establishment on uncultivated pumice hill country

Baars

Douglas

Allan

1982

New Zealand Journal of Experimental Agriculture

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Morphology of tall fescue (Festuca arundinacea) and perennial ryegrass (Lolium perenne) plants in pastures under sheep and cattle grazing

Hume

Brock

1997

J. Agric. Sci.

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The effects of contrasting management systems either of infrequent rotational grazing by town milk supply dairy cattle, or of frequent defoliation by continuously grazing sheep and beef cattle, on the morphology of independent plants and populations of ' Grasslands Roa ' tall fescue in mixed pastures, were measured over 1 year (1992\93) in New Zealand. Volunteer perennial ryegrass plants were also measured for comparison.While both species exhibited a similar pattern of clonal growth, tall fescue developed more plants of higher branching complexity than perennial ryegrass, chiefly through maintaining more connective stems, as herbage production was confined to the three youngest branching orders in both species. Greater resistance to microbial degradation of old stems through poorer quality organic matter (wide C : N ratio) compared to perennial ryegrass may be responsible for the greater complexity of fescue plants. In addition, tillering rates in tall fescue were three times lower which was offset by greater longevity and size of leaves and tillers, compared to perennial ryegrass. As a result, seasonal fluctuation in the distribution of plants among the various branching orders in tall fescue was small, producing a more stable population relative to the distinct seasonal changes in the population of perennial ryegrass plants. Grazing management had no effect on the seasonal population structure in either species.Differences in plant structure due to grazing management were small, with only slightly more tillers on sheep-grazed than on cattle-grazed tall fescue plants. The major effect of grazing management was on dry weight or size of plant components. Cattle-grazed tall fescue plants were 120 % heavier, with greater numbers and lengths of stolons and flower heads than those under sheep grazing. For the volunteer perennial ryegrass, the difference was only 65 %, possibly due to competition from the more vigorous tall fescue under rotational cattle grazing.Both species produced stolons throughout the year, although these were primarily associated with reproductive growth in spring. In tall fescue, an additional distinction was made between stolon and rhizome, the latter occurring mainly in the summer-autumn. Their possible functions in plant growth are discussed.

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