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Growth and persistence of 17 annual medic (Medicago spp.) accessions on clay soils in central Queensland

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Conway, M.J., Brandon, N.J., Clem, R.L., Jones, R. M., Robertson, B.A. and Willcocks, J.R. (2001) Growth and persistence of 17 annual medic (Medicago spp.) accessions on clay soils in central Queensland. Tropical Grasslands-Forrajes Tropicales, 35 (4). pp. 226-234. ISSN 2346-3775

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Article Link: https://www.tropicalgrasslands.info/public/journal...

Abstract

Seventeen accessions of annual medics were evaluated on clay soil sites at Emerald, Theodore, Biloela and Mundubbera, central Queensland. Successful medics could have a role in both permanent and ley pastures. However, these are marginal areas for medics with winter (June-August) rainfalls of 80-100 mm. The accessions were selected on the basis of results in southern Queensland, a more favoured area for medics. There were 9 accessions of Medicago truncatula (barrel medic), 4 of M. scutellata (snail medic), 2 of M. polymorpha (burr medic) and 1 each of M. aculeata (keg medic) and M. orbicularis (button medic). Lucerne (M. sativa) cv. Trifecta was sown at 3 sites. All sites except Theodore were irrigated in the year of establishment (1993). The medic seedlings at Theodore died in 1993 and the trial was resown in 1994. Measurements were made of seed set in the first year and whenever it occurred in later years, seedling density in most years and yield when there was adequate growth. Selected measurements were made of soil seed reserves. Measurements ceased in 1998.

Item Type:Article
Subjects:Agriculture > Agriculture (General) > Soils. Soil science > Soil and crops. Soil-plant relationships. Soil productivity
Live Archive:10 Jan 2024 22:57
Last Modified:10 Jan 2024 22:57

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