Early development characteristics of different clover species during establishment
Maximizing the proportion of legumes in dryland pasture swards is important to provide N to the soil through nitrogen fixation and for large animal live weight gains. The establishment and early seedling characteristics of legumes has a major effect on legume survival in a pasture. The aim of this experiment was to quantify some seedling development characteristic to gain an understanding, of which species would be best suited to grow in dryland pasture mixes in the east coast of New Zealand. The seedling and early development characteristics of many legumes species were analysed in two separate experiments. In experiment one four annual legumes and two perennial control species were direct drilled into a dryland pasture at four different sowing dates in autumn. Seedling and leaf counts were done at emergence and the dry matter production was measured the following spring. In experiment two 10 different clover species and two subterranean clover cultivars were grown in a pot trial. The time to 50% emergence, leaf appearance over time, shoot weights and shoot: root ratios were measured. ‘Bolta’ balansa was the fastest species to emerge, it required a thermal time of 102.6 °Cd to reach 50% emergence. ‘Endura’ Caucasian clover was a very slow developing species, it required 179.1 °Cd to reach 50% emergence and 145.4 °Cd until first leaf appearance. It had a phyllochron of 106.5 °Cd and only produced an average of 8 leaves throughout the trial. Annual legume species had more rapid emergence, leaf appearance and greater shoot growth rates in early establishment than perennials. Subterranean clover had the greatest shoot weights after emergence, ‘Napier’ subterranean clover had a shoot weight of 0.052 g/plant and 0.132 g/plant 33 and 48 days after sowing respectively. Talish clover, alsike clover, white clover and strawberry all had the lowest shoot weights after emergence. The perennial legume species had a greater root: shoot ratios than the annual legume species. In the field gland clover was the most successful at establishment they produced 63% more dry matter than any other species.... [Show full abstract]
Keywordslegumes; dryland; thermal time; establishment; pasture; competition; leaf area; Trifolium pratense; Trifolium ambiguum; Trifolium fragiferum; Trifolium repens; Trifolium hybridum; Trifolium subterraneum; Trifolium michelianum; Trifolium glanduliferum; Trifolium tumens; Trifolium spumosum
Fields of Research0703 Crop and Pasture Production; 070303 Crop and Pasture Biochemistry and Physiology
Showing items related by title, author, creator and subject.
Influence of environmental factors on the abundance of naturalised annual clovers in the South Island hill and high country Maxwell, Thomas M. R.; Moir, James L.; Edwards, Grant (New Zealand Grassland Association., 2010)The abundance of four naturalised annual clovers (striated, cluster, suckling, haresfoot) and two sown clovers (subterranean and white clover) was investigated in relation to topographical, soil fertility and management ...
Ecology and management of adventive annual clover species in the South Island hill and high country of New Zealand Maxwell, T. M. L. R. (Lincoln UniversityChristchurch, New Zealand, 2013)Increasing legume abundance is an important component of pastoral intensification, in providing increased quality feed and nitrogen inputs to nitrogen deficient, hill and high country grassland. Establishment and persistence ...
Grazing management of subterranean clover (Trifolium subterraneum L.) in South Island (New Zealand) Ates, Serkan (Lincoln UniversityChristchurch, 2009)This study consisted of two sheep grazed dryland pasture experiments. Experiment l compared sheep production from 3-year-old cocksfoot based pastures grown in combination with white, Caucasian, subterranean or balansa ...