Options to improve soil fertility with national resources / I. Zimmermann; R. Matzopoulus; H. Kwaambwa
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- 2026-8327
Cover image | Item type | Current library | Collection | Call number | Status | Date due | Barcode |
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Namibia Scientific Society Library Periodicals | Reference | PER 945 Namibian Journal of Environment (Browse shelf(Opens below)) | Not For Loan |
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PER 945 Namibian Journal of Environment Determining age, growth rate and regrowth for a few tree species causing bush thickening in north-central Namibia / | PER 945 Namibian Journal of Environment The status of Faidherbia albida trees in the Hoanib River, Namibia / | PER 945 Namibian Journal of Environment Could critical Australian insights illuminate rangeland management in Namibia? / | PER 945 Namibian Journal of Environment Options to improve soil fertility with national resources / | PER 945 Namibian Journal of Environment Addressing informal settlement growth in Namibia / | PER 945 Namibian Journal of Environment Can camera traps count game / | PER 945 Namibian Journal of Environment Aerial census of Cape Cormorants and Cape fur Seals at Baía dos Tigres, Angola / |
Includes references
Most fertilisers applied to Namibian crop fields are imported, yet Namibia has vast resources that could be used to improve soil fertility. Organic fertilisers such as animal manure and compost could be sourced from farms, or grown on the crop fields, such as green manures and fertiliser trees, or harvested from nature, such as kelp and guano, or sourced from abattoirs or other agricultural processing facilities, such as blood, bone, horn, feather, fish and seed meals. Inorganic fertilisers are usually sourced from quarries or mines on land, while others can be extracted from seawater or salt. Some locally-sourced fertiliser materials could be applied directly to the soil, perhaps after simple processing such as crushing or milling, or after more complex processing such as through chemical reactions. Rock salt and brine solution have been analysed to assess their suitability for extraction of nutrients from which to manufacture chemical fertilisers as by-products of purifying the salt for industrial uses. It is important that harvesting of rock salt and brine from pans north of Cape Cross be done without disrupting the natural regeneration through underground connection to the sea, to ensure sustainability of these valuable resources. Labelling of fertilisers should include a breakdown of the major elements contained, so that farmers who test their soils could determine appropriate application rates to balance minerals that will produce crops of good quality.
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