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Advisor(s)
Abstract(s)
Some legume species are able to utilize phosphorus (P) from sparingly soluble P sources benefiting companion crops or those following in the rotation. Lupinus albus, Vicia villosa, and a mixture of eleven annual pasture legumes were used in olive orchards as mulched cover crops as a means of increasing the soil P availability. By soil testing and growing bioindicator P plants in the next season, it was possible to detect a slight but consistent increase in soil P availability. The results indicated that the increase in soil P availability was mainly due to the mineralization of the high P content legume residues, rather than the direct effect in the rhizosphere of the living plants. The results also suggested that the good adaptation of white lupine to low P environments might be due to a high internal P use efficiency of this species, producing high dry matter yields with low P concentration in their tissues.
Description
Keywords
Lupine Hairy vetch Soil P availability In situ soil incubation Olive grove Cover cropping
Pedagogical Context
Citation
Arrobas, Margarida; Claro, Ana Marília; Ferreira, Isabel Q.; Rodrigues, M.A. (2016). The effect of legume species grown as cover crops in olive orchards on soil phosphorus bioavailability. Journal of Plant Nutrition. ISSN 0190-4167. 38:14, p. 2294-2311