Abstract
AbstractThe Brown Sands are a dominant soil group in South Guyana. They are coarse textured ‐ sand to sandy loam; highly leached; acid, and, although not naturally fertile, they appear suitable for large scale cultivation of groundnuts [Arachis hypogoea (L.)].Two experiments were conducted on these soils to determine the effect of fertilization and inoculation on crop performance.In the nitrogen × inoculum (Rhizobium japonicum) series, N did not influence yield. It caused a decrease in nodulation with the effect becoming more marked with constant cropping. Inoculum up to 226 g/27 kg seed increased yields but decreased nodulation only at the last of three plantings. Both Mg and fritted micronutrients had no effect on yields; these results were difficult to explain considering the highly leached nature of this soil.
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