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- W162518063 abstract "The results are summarized of a number of glasshouse and field experiments conducted since 1970, in which the relative efficiencies of calcium metasilicate slag and calcium carbonate were compared. In four out of the five field trials, significant responses, ranging from 9 to 24 tons cane/ha, were obtained in both the calcium silicate slag and lime treatments. On average, the silicon-based treatments were 5% better than the lime treatments. In one trial where the ameliorants were incorporated to a depth of 65 cm, calcium silicate increased yield significantly (P>0.01), whilst the response to lime did not attain a level of statistical significance. All ameliorants caused a reduction in exchangeable Al in the soil and a reduction in manganese uptake. With treatments containing silica, the increased yields were associated with an increase in the silica concentration in the plant. Current research is focused on the association between silicon assimilation and host-plant resistance to the stalk borer Eldana saccharina Walker (Lepidoptera: Pyralidae). Recent evidence from a large scale pot trial in which sugarcane was treated with calcium silicate and artificially infested with E. saccharina at 9.5 months showed significant reductions of 33.7% in borer damage and 19.8% in borer mass. Scanning of leaf samples by near infra-red spectrometry (NIRS) suggests that up to 60% of the variation in E. saccharina resistance could be accounted for by the leaf silicon (R=0.60) content." @default.
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- W162518063 date "2001-01-01" @default.
- W162518063 modified "2023-10-12" @default.
- W162518063 title "Chapter 16 Past, present and future research of the role of silicon for sugarcane in southern Africa" @default.
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- W162518063 doi "https://doi.org/10.1016/s0928-3420(01)80020-3" @default.
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