Yao Guy Fernand - Academia.edu (original) (raw)
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Papers by Yao Guy Fernand
International journal of plant and soil science, May 29, 2024
The rubber tree, a species of Amazonian forest tree, is cultivated for its natural rubber-rich la... more The rubber tree, a species of Amazonian forest tree, is cultivated for its natural rubber-rich latex. Its cultivation is of economic, social, climatic and environmental importance. However, it has been criticized as a soil-destroying crop. To clear up this ambiguity, a study was launched to assess the health of soils under rubber cover in southern Côte d'Ivoire. The methodology involved selecting Original Research Article
Asian journal of soil science and plant nutrition, Nov 13, 2023
Journal of experimental agriculture international, Sep 20, 2023
World Journal of Advanced Research and Reviews
Côte d'Ivoire is the world's leading cocoa producer, but sustainable cocoa production is ... more Côte d'Ivoire is the world's leading cocoa producer, but sustainable cocoa production is threatened by, among other things, the country's dwindling forest reserves and declining soil nutrients, mainly phosphorus. To remedy the decline in soil fertility, a study of a mineral amendment was carried out in south-central Côte d'Ivoire to ensure the sustainability of cocoa production. Specifically, the aim was to evaluate the effects of rock phosphate (RP) and PK mineral fertilizer on soil fertility and cocoa production at Divo, over three years of trials. The experimental set-up was a Fisher block design, with 4 replications for 5 treatments. The results showed that, in terms of soil fertility, treatments receiving rock phosphate generally had good assimilable phosphorus content (≥ 11.5 Cmolkg-1), a Ca/Mg ratio of between 1 and 1.5, Mg/K≥3, (Ca+Mg)/K of between 12 and 40 and Ca/SBE x100 ≥ 68%. These ratios reflect not only good cocoa-growing soil, but also a good balance ...
Two lowlands under continuous rice-rice cropping in the centre of CA´te d’Ivoire were surveyed ... more Two lowlands under continuous rice-rice cropping in the centre of CA´te d’Ivoire were surveyed in 2013 and 2014 considering 31 rice fields (farmers) for each location. Soil samples (93) were taken in 0 – 20 cm depth systematically (50 m along A— 20 m across) extending the hydromorphic zone (HZ), the fringe valley (FV) and the valley bottom (VB) along the upper stream (US), median (MS) and downstream (DS) positions respectively. Highest yields of 6.09 – 6.16 tha-1 were observed in DS and MS while limited chances of 24% to 30.17% were characterizing the yield over 5 tha-1 (yield class I) in dry season against 18% - 46.31% in wet season. Weeding and irrigation were the most significant agricultural practices for yield improvement during wet and dry seasons respectively meanwhile, soil content of silt and humification rate (K2) were reversibly accounting for 65.85% contributions of the yield class I in addition to Ca and Mg effects. Of course, the recommended NPK fertilizer (150 a...
International Journal of Advanced Research, 2021
A morphopedological study was conducted on a 10 hectares plot of land near the village of Bopri i... more A morphopedological study was conducted on a 10 hectares plot of land near the village of Bopri in the sub-prefecture of Brobo. The objective was to identify the soils of this site in order to have a general overview of the soils of this region, which is poorly known from a pedological point of view and where the rare information relating to the soils goes back decades. Its implementation required the opening of 7 soil pits distributed homogeneously over the entire site in order to guarantee the representativeness of the information collected during these investigations. In total, this study revealed that this site contains a large proportion of typically ferralitic soils with deep indurations Haplic Ferralsols (Endopetric). However, in addition to this dominant category, anthropogenic Leptosols are found, which are characterised by a continuous mass of duricrust starting less than 25 cm deep and whose formation is consecutive of human activities.
European Scientific Journal, Mar 31, 2013
In order to appreciate the current status of developed soil in the manganese and goldbearing regi... more In order to appreciate the current status of developed soil in the manganese and goldbearing region of Blafo-Gueto at the Center-South part of Côte D'Ivoire, this study is undertaken and concerned some macromorphological parameter characterization. Based on the field description of these macromorphological parameters, by opening soil profile through two lines, the one on the hill Blafo, the other one on the hill Guéto, it was shown that the soil are reshaped and in brown color. The soil structures are lumpy in humus horizons which go to 30-40 cm. On the other hand, the structure is polyhedral subangular in intermediate and deep horizons. The drainage class is good in the humus or surface horizons and all the soil texture goes from sandy clayey to clayey soil. The percentage of the unrefined elements is
![Research paper thumbnail of Bulletin Agro_climatique des stations du CNRA [Janv-Mars 2023]](https://attachments.academia-assets.com/110036528/thumbnails/1.jpg)
](Zenodo (CERN European Organization for Nuclear Research), Apr 17, 2023
International journal of plant and soil science, May 29, 2024
The rubber tree, a species of Amazonian forest tree, is cultivated for its natural rubber-rich la... more The rubber tree, a species of Amazonian forest tree, is cultivated for its natural rubber-rich latex. Its cultivation is of economic, social, climatic and environmental importance. However, it has been criticized as a soil-destroying crop. To clear up this ambiguity, a study was launched to assess the health of soils under rubber cover in southern Côte d'Ivoire. The methodology involved selecting Original Research Article
Asian journal of soil science and plant nutrition, Nov 13, 2023
Journal of experimental agriculture international, Sep 20, 2023
World Journal of Advanced Research and Reviews
Côte d'Ivoire is the world's leading cocoa producer, but sustainable cocoa production is ... more Côte d'Ivoire is the world's leading cocoa producer, but sustainable cocoa production is threatened by, among other things, the country's dwindling forest reserves and declining soil nutrients, mainly phosphorus. To remedy the decline in soil fertility, a study of a mineral amendment was carried out in south-central Côte d'Ivoire to ensure the sustainability of cocoa production. Specifically, the aim was to evaluate the effects of rock phosphate (RP) and PK mineral fertilizer on soil fertility and cocoa production at Divo, over three years of trials. The experimental set-up was a Fisher block design, with 4 replications for 5 treatments. The results showed that, in terms of soil fertility, treatments receiving rock phosphate generally had good assimilable phosphorus content (≥ 11.5 Cmolkg-1), a Ca/Mg ratio of between 1 and 1.5, Mg/K≥3, (Ca+Mg)/K of between 12 and 40 and Ca/SBE x100 ≥ 68%. These ratios reflect not only good cocoa-growing soil, but also a good balance ...
Two lowlands under continuous rice-rice cropping in the centre of CA´te d’Ivoire were surveyed ... more Two lowlands under continuous rice-rice cropping in the centre of CA´te d’Ivoire were surveyed in 2013 and 2014 considering 31 rice fields (farmers) for each location. Soil samples (93) were taken in 0 – 20 cm depth systematically (50 m along A— 20 m across) extending the hydromorphic zone (HZ), the fringe valley (FV) and the valley bottom (VB) along the upper stream (US), median (MS) and downstream (DS) positions respectively. Highest yields of 6.09 – 6.16 tha-1 were observed in DS and MS while limited chances of 24% to 30.17% were characterizing the yield over 5 tha-1 (yield class I) in dry season against 18% - 46.31% in wet season. Weeding and irrigation were the most significant agricultural practices for yield improvement during wet and dry seasons respectively meanwhile, soil content of silt and humification rate (K2) were reversibly accounting for 65.85% contributions of the yield class I in addition to Ca and Mg effects. Of course, the recommended NPK fertilizer (150 a...
International Journal of Advanced Research, 2021
A morphopedological study was conducted on a 10 hectares plot of land near the village of Bopri i... more A morphopedological study was conducted on a 10 hectares plot of land near the village of Bopri in the sub-prefecture of Brobo. The objective was to identify the soils of this site in order to have a general overview of the soils of this region, which is poorly known from a pedological point of view and where the rare information relating to the soils goes back decades. Its implementation required the opening of 7 soil pits distributed homogeneously over the entire site in order to guarantee the representativeness of the information collected during these investigations. In total, this study revealed that this site contains a large proportion of typically ferralitic soils with deep indurations Haplic Ferralsols (Endopetric). However, in addition to this dominant category, anthropogenic Leptosols are found, which are characterised by a continuous mass of duricrust starting less than 25 cm deep and whose formation is consecutive of human activities.
European Scientific Journal, Mar 31, 2013
In order to appreciate the current status of developed soil in the manganese and goldbearing regi... more In order to appreciate the current status of developed soil in the manganese and goldbearing region of Blafo-Gueto at the Center-South part of Côte D'Ivoire, this study is undertaken and concerned some macromorphological parameter characterization. Based on the field description of these macromorphological parameters, by opening soil profile through two lines, the one on the hill Blafo, the other one on the hill Guéto, it was shown that the soil are reshaped and in brown color. The soil structures are lumpy in humus horizons which go to 30-40 cm. On the other hand, the structure is polyhedral subangular in intermediate and deep horizons. The drainage class is good in the humus or surface horizons and all the soil texture goes from sandy clayey to clayey soil. The percentage of the unrefined elements is
Zenodo (CERN European Organization for Nuclear Research), Apr 17, 2023