Local Initiatives of Land Rehabilitation in the Sudano-Sahelian Region: Case of &amp;lt;i&amp;gt;Hard&amp;#233;&amp;lt;/i&amp;gt; Soils in the Far North Region of Cameroon

Tsozué, Désiré; Haiwe, Bertand Roger; Louleo, Jean; Nghonda, Jean Pierre

doi:10.4236/ojss.2014.41002

Cited by 16 publications

(20 citation statements)

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“…The situation might worsen due to unsustainable use of soil and water under present scenarios of climate change (Gabathuler et al, 2009;Muluneh et al, 2014). Soil loss is a worldwide risk and adversely affects the productivity of all natural ecosystems as well as agricultural, forest and rangeland ecosystems (Pimentel et al, 1995;Pimentel, 2006;Perkins et al, 2013;Lemenih et al, 2014;Van Leeuwen et al, 2015). Changes in soil quality affected by accelerated erosion are significant and have resulted in decreased production and land abandonment (Pimentel et al, 1995).…”

Section: Introductionmentioning

confidence: 99%

Impact of land management system on crop yields and soil fertility in Cameroon

Tsozué¹,

Nghonda²,

Mekem³

2015

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Abstract. The impact of direct-seeding mulch-based cropping systems (DMC), direct seeding (DS) and tillage seeding (TS) on Sorghum yields, soil fertility and the rehabilitation of degraded soils was evaluated in northern Cameroon. Field work consisted of visual examination, soil sampling, yield and rainfall data collection. Three fertilization rates (F1: 100 kg ha−1 NPK + 25 kg ha−1 of urea in DMC, F2: 200 kg ha−1 NPK + 50 kg ha−1 of urea in DMC and F3: 300 kg ha−1 NPK + 100 kg ha−1 of urea in DMC) were applied to each cropping system (DS, TS and DMC), resulting in nine experimental plots. Two types of chemical fertilizer were used (NPK 22.10.15 and urea) and applied each year from 2002 to 2012. Average Sorghum yields were 1239, 863 and 960 kg ha−1 respectively in DMC, DS and TS at F1, 1658, 1139 and 1192 kg ha−1 respectively in DMC, DS and TS at F2, and 2270, 2138 and 1780 kg ha−1 respectively in DMC, DS and TS at F3. pH values were 5.2 to 5.7 under DMC, 4.9 to 5.3 under DS and TS, and 5.6 in the control sample. High values of cation exchange capacity were recorded in the control sample, TS system and F1 of DMC. Base saturation rates, total nitrogen and organic matter contents were high in the control sample and the DMC than in the others systems. All studied soils were permanently not suitable for Sorghum due to the high percentage of nodules. F1 and F2 of the DS were currently not suitable, while F1 and F3 of DMC, F3 of DS and F1, F2 and F3 of TS were marginally suitable for Sorghum due to low soil pH values.

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Section: Introductionmentioning

confidence: 99%

Impact of land management system on crop yields and soil fertility in Cameroon

Tsozué¹,

Nghonda²,

Mekem³

2015

Preprint

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“…Soil OM was an essential component of soil quality, governing processes like carbon sequestration, nutrient cycling, water retention and soil aggregate turnover (Van Leeuwen et al, 2015). Low mineral element contents in the soil were accentuated by low levels of soil OM.…”

Section: Consequence Of Land Management On the Mineralization Of Soilmentioning

confidence: 99%

“…Degradation of these fragile soils is expressed both in the rainy and the dry season and loss of land ranges from 0.5 to 40 Mg ha −1 yr −1 under crops on the long ferruginous tropical glacis of Sudano-Sahelian regions (Boli et al, 1991). This leads to the development of infertile soils called hardé soils, the most striking sign of land degradation, characterized by vast expansion of bare soils (Boli, 1996;Tsozué et al, 2014). One of the spontaneous responses to the decline of soil fertility is the extension of cultivated surface on lands that are sometimes marginal, instead of increased or improved existing production systems (Dongmo, 2009).…”

Section: Tsozué Et Al: Impact Of Land Management System On Crop Ymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Impact of land management system on crop yields and soil fertility in Cameroon

2015

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Abstract. The impact of direct-seeding mulch-based cropping systems (DMC), direct seeding (DS) and tillage seeding (TS) on Sorghum yields, soil fertility and the rehabilitation of degraded soils was evaluated in northern Cameroon. Field work consisted of visual examination, soil sampling, yield and rainfall data collection. Three fertilization rates (F1: 100 kg ha −1 NPK + 25 kg ha −1 of urea in DMC, F2: 200 kg ha −1 NPK + 50 kg ha −1 of urea in DMC and F3: 300 kg ha −1 NPK + 100 kg ha −1 of urea in DMC) were applied to each cropping system (DS, TS and DMC), resulting in nine experimental plots. Two types of chemical fertilizer were used (NPK 22.10.15 and urea) and applied each year from 2002 to 2012. Average Sorghum yields were 1239, 863 and 960 kg ha −1 in DMC, DS and TS, respectively, at F1, 1658, 1139 and 1192 kg ha −1 in DMC, DS and TS, respectively, at F2, and 2270, 2138 and 1780 kg ha −1 in DMC, DS and TS, respectively, at F3. pH values were 5.2-5.7 under DMC, 4.9-5.3 under DS and TS and 5.6 in the control sample. High values of cation exchange capacity were recorded in the control sample, TS system and F1 of DMC. Base saturation rates, total nitrogen and organic matter contents were higher in the control sample and DMC than in the other systems. All studied soils were permanently not suitable for Sorghum due to the high percentage of nodules. F1 and F2 of the DS were currently not suitable, while F1 and F3 of DMC, F3 of DS and F1, F2 and F3 of TS were marginally suitable for Sorghum due to low pH values.

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“…In Cameroon, the Far North Region is the most populated area of the country. It differs from the rest of the other regions mainly by its sudano-sahelian climate, its landscape globally flat with high reliefs here and there, and a large volcanic massive, the Mandara massive, who from its about 1450 m a.s.l., overlooks a vast peneplain whose altitude ranges between 300 and 400 m. All lands are cultivated, and today there is a generalized decline in soil fertility (Tsozué et al, 2014;2015). This led people to cultivate up to the mountainous spaces around Maroua, spaces reserved exclusively for cattle rearing in the past.…”

Section: Introductionmentioning

confidence: 99%

Genesis and classification of soils developed on gabbro in the high reliefs of Maroua region, North Cameroon

Tsozué

Nzeukou

Azinwi

2017

Eurasian Journal of Soil Science (Ejss)

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Article Info Received : 19.10.2016 Accepted : 15.12.2016 The purpose of this work was to examine the genesis, properties and classification of soils resulting from the weathering of gabbro rock in the high reliefs of Maroua in the Far North Region of Cameroon. The studied soils were ~ 2 m thick, made of four horizons which consisted of coarse saprolite, fine saprolite, loose loamy clayey horizon and humiferous horizon. From petrographical view point, at the bottom of the soil profile, the preservation of the bedrock structure was marked by numerous remnants of altered plagioclases shapes. The groundmass was characterized by a double spaced fine, ranging to equal, enaulic c/f related distribution pattern. It was yellowish, characterized by weakly separated granular microstructure in the fine saprolite and had a speckled and cloudy limpidity in the loose loamy clayey horizon. Secondary minerals consisted of montmorilonite, kaolinite, goethite, quartz, gibbsite, lepidocrocite, sepiolite, feldspar and calcite. Globally, Si/Al ratio ranged between 2.85 and 3.24. The chemical index of alteration ranged from 50.95 to 55.27 % while the mineralogical index of alteration values were between 1.90 and 10.54 %. Physicochemically, soil pH varied from slightly acidic to slightly above neutral. Soil organic carbon contents were low to very low. Exchangeable bases contents were high, mostly represented by Ca 2+ and Mg 2+ . The CEC of soils and the CEC of clay were also high, ranging respectively between 53.68 and 82.88 cmol(+).kg -1 , and 116.80 and 181.38 cmol(+).kg -1 . The studied soils were classified as dystric haplustepts clayey isohyperthermic. They were developed in situ by the collapse of primary mineral structures from the bottom of the coarse saprolite, due to leaching as a result of bisiallitisation and monosiallitisation. This is accompanied by a progressive ferruginization of materials, confirmed by the densification under the microscope of goethitic brown veil from the base to the loamy clay horizon and the increase in iron contents from the bedrock to the humiferous surface horizon.

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Local Initiatives of Land Rehabilitation in the Sudano-Sahelian Region: Case of <i>Hardé</i> Soils in the Far North Region of Cameroon

Cited by 16 publications

References 10 publications

Impact of land management system on crop yields and soil fertility in Cameroon

Impact of land management system on crop yields and soil fertility in Cameroon

Impact of land management system on crop yields and soil fertility in Cameroon

Genesis and classification of soils developed on gabbro in the high reliefs of Maroua region, North Cameroon

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