Morphology, flowering, and persistence of subterranean clover cultivars grown in North Island hill country: A preliminary note

Self Cite

A 2-year trial evaluated the herbage production of a number of selected subterranean clover (Trifolium subterraneum L.) cultivars and lines. Seedlings were transplanted into small plots on a cultivated area of less than 5° slope. Morphological characteristics, spring herbage production, isoflavone content, and summer/autumn seedling emergence were measured. Of the cultivars evaluated in this trial, only 'Denmark' proved to be an improvement on 'Tallarook', and this was only on the basis of early-season growth. However, a number of lines in this trial stood out in terms of their growth during the spring period and their high level of seed production. They included AK 664, WS 1436, and WS 536. Herbage harvested over 3 months from pure swards exceeded the equivalent of 2700 kg DM/ha, and seed production exceeded 7000 seeds/m 2 . These lines also had tissue formononetin levels less than 0.20% of dry weight. These results will be combined with those from previous persistence trials to determine those lines suitable for further cultivar development.

Section: Introductionmentioning

confidence: 97%

Section: Morphological Characteristicsmentioning

confidence: 99%

Development of subterranean clover(Trifolium subterraneumL.) genotypes for New Zealand pastures 3. Whatawhata production evaluation

Dodd

Sheath

Tarbotton

1995

Self Cite

“…It should be recognised that continuous grazing to heights of 1-3 cm is common practice in hill farming during spring. In previous work conducted under similar site conditions, longterm persistence was best for "Tallarook' and 'Howard' (Sheath & Richardson 1983). Plant densities in 1985 and 1986 reflected both direct cultivar and indirect management effects.…”

Section: Regenerationmentioning

confidence: 99%

Evaluation of clovers in dry hill country 3. Regeneration and production of subterranean clover at Whatawhata, New Zealand

Sheath

Macfarlane

1990

Self Cite

“…Furthermore, the on-offgrazing management system used involved a risk that grazing at an inappropriate time (e.g., during peak flowering of subterranean clover) may have penalised some groups ofcultivars or lines relative to the others. The interaction between grazing pressure and plant morphology has been well documented (e.g., Williams et al 1982;Sheath & Hodgson 1989)-larger-leaved, relatively open plant types are favoured by a lax grazing regime. Consequently, in the current work, it may be assumed that the larger-leaved material may have been allowed to express its potential somewhat more than would occur in practice.…”

Section: General Methodsmentioning

confidence: 99%

“…The cultivar 'Clare' is no longer sown and so only 'Mt Barker' and 'Woogenellup' are available to service all New Zealand's pastoral environments. Previous evaluations in dryland have highlighted the merit of 'Woogenellup' in Canterbury (Scott 1972) and of late-flowering typessuchas 'Tallarook' in steepNorth Island hill country (Sheath & Richardson 1983).…”

Section: Description Of Plant Materialsmentioning

confidence: 99%

Evaluation of clovers in dry hill country 1. General objectives and description of sites and plant material

Williams¹,

Sheath²,

Chapman³

1990

Self Cite

Pastures in summer-dry hill country typically contain low proportions of productive legumes such as white clover (Trifolium repens L.) and subterranean clover (T. subterraneum L.). This reflects the combined stresses of drought, low soil fertility, and grazing management, but there is no clear indication as to which attributes clover plants require to persist in these pastures. A national evaluation of nine subterranean clover cultivars and 10 white clover lines was initiated to identify plant characteristics associated with persistence and productivity of both species in grazed, summer-dry hill country, so that these characteristics can be incorporated within future plant introduction and breeding programmes. This paper describes the eight experimental sites and the attributes of the clover material evaluated. Detailed results are given in the 10 papers following.