Summary
The effects ofLupinus angustifolius, L. arboreus. and nitrogen fertilizer plus weedicide on soil inorganic nitrogen, and the growth, nutrition and water status ofPinus radiata seedlings were compared on a sandy podzol in Victoria Australia. Both lupins increased the concentration of soil inorganic nitrogen from 6 μg g−1 to at least 11 μg g−1 one year after treatment.Lupinus arboreus (a perennial) led to high mortality ofP. radiata seedlings and no growth response in survivors because it competed for water during summer. In contrast,L. angustifolius (an annual) senesced prior to summer and resulted in increased fascicle size and stem growth rates ofP. radiata. Growth ofP. radiata withL. angustifolius was similar to that with weedicide only. The concentration. of phosphorus in foliage ofP. radiata seedlings was highest when growth withL. angustifolius. However, the highest growth rate ofP. radiata occurred in the nitrogen fertilizer plus weedicide treatment.
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Smethurst, P.J., Turvey, N.D. & Attiwill, P.M. Effect ofLupinus spp. on soil nutrient availability and the growth ofPinus radiata D. Don seedlings on a sandy podzol in Victoria, Australia. Plant Soil 95, 183–190 (1986). https://doi.org/10.1007/BF02375070
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DOI: https://doi.org/10.1007/BF02375070