Search Results - "Preez, CC du"

Relationships between agronomic and environmental phosphorus analyses of selected soils by Nthejane, MM, Preez, CC du, Huyssteen, CW van

“…Phosphorus (P) is an essential nutrient in crop production and is therefore typically applied as phosphatic fertilisers. This can induce soil P concentrations…”
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Canola water use indicators as affected by sustained deficit irrigation and plant density in central Free State, South Africa by Seetseng, K.A, Barnard, J.H, van Rensburg, L.D, du Preez, C.C

“…In South Africa canola (Brassica napus L.) is cultivated in rotation with wheat under winter rainfall in the Western Cape Province, primarily for seed to make…”
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Short-term effects of conservation agriculture strategies on the soil quality of a Haplic Plinthosol in Eastern Cape, South Africa by Gura, I, Mnkeni, PNS, Du Preez, CC, Barnard, JH

“…The improvement of soil quality in agro-ecosystems is one of the major objectives of conservation agriculture (CA) strategies. The objective of this study was…”
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Canola (Brassica napus L.) water use indicators as aefcted by sustained deficit irrigation and plant density in central Free State, South Africa by Seetseng, KA, Barnard, JH, Van Rensburg, LD, du Preez, CC

“…In South Africa canola (Brassica napus L.) is cultivated in rotation with wheat under winter rainfall in the Western Cape Province, primarily for seed to make…”
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Nitrogen requirements of canola ( Brassica napus L.) at sustained deficit irrigation levels in central Free State, South Africa by Seetseng, KA, Barnard, JH, du Preez, CC

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Impact of liming on extractable phosphorus, exchangeable base cations, and effective cation exchange capacity of eastern Free State soils by van Zyl, HJJ, du Preez, CC

“…Soil acidity can adversely affect wheat production in the eastern Free State, South Africa. Liming of the soils is therefore essential. The aim of this study…”
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Response of wheat cultivars with varying acid tolerances to liming of eastern Free State soils by van Zyl, HJJ, du Preez, CC

“…The sustainable production of wheat can be affected by soil acidity in the eastern Free State, South Africa. Liming of soil to appropriate acidity levels is…”
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Liming guidelines for soils under wheat cropping in the eastern Free State, South Africa by van Zyl, HJJ, du Preez, CC

“…Soil acidity hampers the sustainability of wheat production in the eastern Free State, South Africa. Specific guidelines for liming are needed by farmers and…”
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Comparison of single vs composite soil electrical apparent conductivity-directed samples of irrigated soils for inorganic nitrogen estimation with electromagnetic induction sensors by Steenekamp, D, van Rensburg, LD, Barnard, JH, du Preez, CC

“…The management of soil can be improved by precision agriculture. A way to achieve this is by quantifying NH 4 + -N and NO 3 − -N in soil. The sampling of soil…”
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Phosphorus extraction by selected methods in alkaline and calcareous soils after mono-ammonium phosphate application at different rates by Venter, AE, du Preez, CC

“…Little research has been done on extractable phosphorus (P) in alkaline and calcareous irrigated soils of South Africa. This study aimed to quantify…”
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A comparison of the results of phosphorus analyses of alkaline and calcareous soils amongst South African laboratories by Venter, AE, du Preez, CC

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Impact of preceding crop sequences on wheat growth and development under conservation agriculture in the eastern Free State, South Africa by Visser, MH, Barnard, A, du Preez, CC

“…Conservation agriculture (CA) is advocated to promote sustainable cropping. Little is known about the impact of preceding crop sequences on the growth and…”
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Land use change affecting soil humic substances in three semi-arid agro-ecosystems in South Africa by Kotzé, E., Loke, P.F., Akhosi-Setaka, M.C., Du Preez, C.C.

“…•We investigated the rate of soil carbon and nitrogen losses or gains due to land use.•Cultivation decreases soil humic substances, compared to primary…”
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Is application of commercial potassium humates beneficial to soil and wheat? by Ceronio, GM, van Tonder, JT, du Preez, CC

“…Commercial humates manufactured from oxidised lignites are often recommended to improve soil condition and crop growth. The benefits ascribed to these products…”
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Comparison of soil phosphorus fractions after 37 years of wheat production under different management practices in a semi-arid climate by Ncoyi, K, du Preez, CC, Kotzé, E

“…Crop residue management is important for enhancing soil fertility and productivity which leads to an increase in crop yields. A long-term trial, situated near…”
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Impact of long-term production management practices on wheat grain yield and quality components under a semi-arid climate by Seepamore, MK, du Preez, CC, Ceronio, GM

“…Wheat production in South Africa has declined significantly over the past three decades making the country a nett importer of wheat. Proper production…”
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Organic carbon content in the diagnostic horizons and materials of South African soil forms by van Huyssteen, CW, Rantoa, NR, du Preez, CC

“…Soil classification aims to group similar soils to facilitate communication and management. Management of soil organic carbon is gaining international…”
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Transpiration efficiency of lucerne under unlimited soil water conditions during the first growing season by Tfwala, CM, Mengistu, G, Ukoh Haka, IB, van Rensburg, LD, du Preez, CC

“…Lucerne production is regarded as requiring high water inputs, making it necessary to understand its transpiration efficiency, especially in countries with…”
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Rangeland management impacts on the properties of clayey soils along grazing gradients in the semi-arid grassland biome of South Africa by Kotzé, E., Sandhage-Hofmann, A., Meinel, J.-A., du Preez, C.C., Amelung, W.

“…The grassland biome of South Africa is a major resource for livestock farming; yet the soils of these rangelands are stressed differently by various management…”
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Influence of water application levels and plant densities on the plasticity of canola in the central Free State, South Africa by Seetseng, KA, van Rensburg, LD, Barnard, JH, du Preez, CC

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