Evaluation of deterioration index in soil nutrients due to cultivation of different cocoa species in southwest Nigeria

AFOLAYAN, Olusola Samuel; Oderinde, Folasade

doi:10.4314/jasem.v22i4.20

Cited by 3 publications

(2 citation statements)

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“…The rather similar cocoa leaf-litter turnover patterns found in all cAFS suggests comparable varietal compositions of cocoa trees in the plots, regardless of age-category and previous land-use. Indeed, differences in cocoa populations could have led to differences in cocoa leaf-litter cycling and decomposition (Afolayan and Oderinde 2018;Ofori-Frimpong and Rowell 1999). Such a result, may therefore point to the poor penetration of recent/hybrid plant materials in the Bokito area.…”

Section: Cocoa Leaf-litter Turnovermentioning

confidence: 99%

Litterfall seasonal dynamics and leaf-litter turnover in cocoa agroforests established on past forest lands or savannah

et al. 2021

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Nutrient cycling in cocoa agroforestry systems (cAFS) is complex and poorly understood. To better understand the mass flow of carbon and nutrients into the soil sub-system under various contexts we quantified the mass flow of litterfall, its composition and seasonal variations in different agroforestry systems in Bokito (Central Cameroon). We studied litterfall dynamics and in situ leaf-litter cycling of cAFS established on past forest lands (F-cAFS) and savannah (S-cAFS). We also studied the decomposition of cocoa and associated tree leaf-litter in litterbags. Local secondary semi-deciduous forests were included as control. Annual litterfall in fullgrown cAFS ([ 15 years old) was high (9.4 Mg ha -1 y -1 ) and represented ca. 67% of litterfall in control forests. In full-grown cAFS, associated tree leaf-litter contributed to litterfall the most and ranged between 60 and 70% of the total amount recorded (6.3 Mg ha -1 y -1 ). The quantities and dynamics of the litter components monitored were similar in fullgrown S-and F-cAFS. The microclimate was best buffered in forests and least buffered in young S-cAFS but could not be linked to leaf-litter decomposition. Forest leaf litterfall was higher and tended to cycle faster than total leaf-litter of cAFS, whose decomposition appeared limited by cocoa leaf-litter quality. Our study underlines (i) the critical contribution of associated trees to the nutrient cycle of agroecosystems established on poor soils and, (ii) the ability of farmers to channel associated tree communities towards similar functioning despite different past land-uses.

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Section: Cocoa Leaf-litter Turnovermentioning

confidence: 99%

Litterfall seasonal dynamics and leaf-litter turnover in cocoa agroforests established on past forest lands or savannah

et al. 2021

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“…Chemically, edaphic pH was evaluated by direct estimation (i.e., pH-meter) in water solution. In addition, the potassium of the sampled soils (mg kg −1 ) was estimated by means of flame photometry [43]. Finally, from the estimation of the carbon percentage of the samples by colorimetry [44], organic matter was calculated following Equation (3):…”

Section: Management Type Erosion Levelmentioning

confidence: 99%

Estimation of Soil Loss Tolerance in Olive Groves as an Indicator of Sustainability: The Case of the Estepa Region (Andalusia, Spain)

2019

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A Comparative Analysis of Soil Loss Tolerance and Productivity of the Olive Groves in the Protected Designation of Origin (PDO) Areas Norte Alentejano (Portugal) and Estepa (Andalusia, Spain)

et al. 2021

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Olive groves are Mediterranean systems that occupy more than 2.5 M ha in Spain and 0.352 M ha in Portugal. Assuming the differences between both countries in terms of olive grove regulation and considering their multifunctionality, it is useful to implement agronomic indices to estimate their sustainability. The Soil Loss Tolerance Index (SLTI) and the Soil Productivity Index (SPI) are two such indices. We calculated both indices in the Protected Designation of Origin (PDO) Norte Alentejano (Portugal). The SLTI index was adapted considering specific variables of the analysed olive groves (i.e., SLTIog). The values obtained were compared with those previously estimated for PDO Estepa (Spain). The negative impacts of erosion and the underlying agricultural practices on the sustainability of olive groves became evident, resulting in decreased soil productivity at the regional level. The SLTIog index showed higher values for crops, being a more realistic tool to analyse sustainability. A higher soil loss tolerance was detected for integrated groves in the PDO Norte Alentejano than for PDO Estepa due to the shorter age of olive cultivation in Portugal, with incipient soil impacts. These indices provide information on the degree of soil erosion, allowing farmers and decision-makers to apply practices to maximise the sustainability of olive groves.

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Evaluation of deterioration index in soil nutrients due to cultivation of different cocoa species in southwest Nigeria

Cited by 3 publications

References 1 publication

Litterfall seasonal dynamics and leaf-litter turnover in cocoa agroforests established on past forest lands or savannah

Litterfall seasonal dynamics and leaf-litter turnover in cocoa agroforests established on past forest lands or savannah

Estimation of Soil Loss Tolerance in Olive Groves as an Indicator of Sustainability: The Case of the Estepa Region (Andalusia, Spain)

A Comparative Analysis of Soil Loss Tolerance and Productivity of the Olive Groves in the Protected Designation of Origin (PDO) Areas Norte Alentejano (Portugal) and Estepa (Andalusia, Spain)

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