Micronutrient Composition of Soils and Supported Solanum scabrum in Bafut Sub-division (North-West Cameroon)

Tita, Margaret Awah; Tamfuh, Primus Azinwi; Wotchoko, Pierre; Magha, Alice; Azinwi, Rebecca Bienkaa

doi:10.9734/ijpss/2016/20391

Cited by 2 publications

(2 citation statements)

References 14 publications

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“…The sub-surface horizons with low organic matter contents show low structural stability values. The Bafut soils fell within the low to medium fertility range [22] [64] [65].…”

Section: P Azinwi Tamfuh Et Al Journal Of Geoscience and Environmenmentioning

confidence: 99%

Soil Properties and Land Capability Evaluation in a Mountainous Ecosystem of North-West Cameroon

Tamfuh¹,

Temgoua²,

Wotchoko³

et al. 2018

GEP

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Up to date, tropical mountainous ecosystems still lack in depth information on soil and environmental characteristics which are major factors limiting optimum crop production. The objective of this work was to study soil characteristics and to evaluate the land capability level for the production of some common tropical crops in mountainous ecosystem soils of North West Cameroon. Soil sampling was done following a randomized complete block design (RCBD) with four replications for three topographic positions (upslope, midslope and footslope) and at two depths (0 -20 cm and 20 -100 cm). It was completed by standard laboratory analyses. The fertility capability classification (FCC) system enabled to identify soil limitations and to classify soils into FCC units. Land and climate were evaluated by simple limitation and parametric methods. Globally, the soils were dark-colored, sandy clayey to clayey, compact and very acidic (pHH 2 O = 4.3 -5.8). The organic matter (3.7% -5.1% dry matter), total nitrogen (0.08% -0.56%) and available phosphorus (22.1 to 30.9 mg·kg −1 ) recorded for the 0 -20 cm depth then reduced with depth but midslope values were also lower. The C/N ratio varied between 9 and 45. Low C/N values appeared mostly in 0 -20 cm depth at the upslope and downslope soils and subsurface soils of midslope position. Exchangeable Ca was very low to low (1.43 -3.6 cmol + kg DOI: 10.4236/gep.2018.67002 16 Journal of Geoscience and Environment Protection was the most relatively concentrated base in all the soils. There was a clear variation of most of the soil properties along the slope and with depth. The soils were classified in the FCC system as aek for the upslope soils, Caek for the midslope soils and Cagk for the footslope soils. The principal limitations to production of huckleberry, beans, maize and potatoes were heavy rainfall, wetness, steep slope, soil texture/structure and low soil fertility. These constraints might be overcome by farming at the end of the raining season, contour ploughing, terracing, fertilization and liming.

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“…The sub-surface horizons with low organic matter contents show low structural stability values. The Bafut soils fell within the low to medium fertility range [22] [64] [65].…”

Section: P Azinwi Tamfuh Et Al Journal Of Geoscience and Environmenmentioning

confidence: 99%

Soil Properties and Land Capability Evaluation in a Mountainous Ecosystem of North-West Cameroon

Tamfuh¹,

Temgoua²,

Wotchoko³

et al. 2018

GEP

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“…to toxic levels [16,26,27,28]. These vegetables are cultivated in several locations in the humid Cameroon Western highlands at different topographic posisions and at different seasons [19,25,30].…”

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Effect of Topographic Position and Seasons on the Micronutrient Levels in Soils and Grown Huckleberry (<i>Solanum scabrum) </i>in Bafut (North-West Cameroon)

Tamfuh¹,

Tsozué²,

Tita³

et al. 2017

WJAR

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Although topography and climate are known to affect soil micronutrient mobility, some related aspects like micronutrient bioavailability to plants and implications to human intake are not fully understood. This paper aimed to study the effects of different topographic positions and seasons (dry or humid) on micronutrient levels in soils and Solanum scabrum. A randomized complete block design with four replications was adopted for each topographic position. Fieldwork was completed by a battery of soil and vegetable analyses. The main results revealed that soil micronutrient levels appeared as follows: Al>Fe>Mn>Zn>Cu for all positions and seasons. The soil micronutrient levels were lowest for the midslope in relation to its steeper gradient that affects downwards migration of matter. Zn and Cu were below the recommended range for agricultural soils, while Al was far above in relation to the strongly acidic pH. In S. scabrum, micronutrients appeared as Mn>Fe>Zn>Al>Cu. Globally, vegetable metal levels were higher in the dry season for all positions. Except Al, all metals were below permissible and toxicity levels in food, while only Fe, Mn and Zn where above recommended range for normal plant growth. Metal transfer factors, apart from midslope, were higher in the dry season. Only Mn and Zn for all positions and seasons as well as Zn at footslope, were above 1. Globally, micronutrient levels in soils and vegetables were higher in the dry seasons for all positions. Micronutrient intake rates were higher in the dry season for all positions but lowest in the midslope for all seasons. Except Fe and Zn in adults, metal levels were above the recommended daily dietary intake indicating excess micronutrients intake by the inhabitants. Overall, a combination of steep slope and humid season reduces soil micronutrient level, limit uptake by vegetables and hence reduce mean daily intake in humans.

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Micronutrient Composition of Soils and Supported Solanum scabrum in Bafut Sub-division (North-West Cameroon)

Cited by 2 publications

References 14 publications

Soil Properties and Land Capability Evaluation in a Mountainous Ecosystem of North-West Cameroon

Soil Properties and Land Capability Evaluation in a Mountainous Ecosystem of North-West Cameroon

Effect of Topographic Position and Seasons on the Micronutrient Levels in Soils and Grown Huckleberry (<i>Solanum scabrum) </i>in Bafut (North-West Cameroon)

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