Publications by authors named "Sissou Zakari"

Optimizing the use of organic and mineral fertilizer in rain-fed maize production is crucial for sustainable food production in sub-Saharan Africa. This study investigates the effect of hill-placement of two nutrient sources (farmyard manure and synthetic fertilizer) on nutrient- and water-use efficiencies of maize crops i.e.

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Women economic potential can be used to reduce household's food insecurity in sub-Saharan Africa. This study analyzed the influence of gender on household's food security through the household's income in North-Benin. We selected 300 households using a multistage sampling technique.

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The response of leaf functional traits can provide vital insight into the adaptive strategies of plants under global change. However, empirical knowledge on the acclimation of functional coordination between phenotypic plasticity and integration to increased nitrogen (N) deposition is still scarce. The variation of leaf functional traits of two dominant seedling species, Machilus gamblei and Neolitsea polycarpa, across four N deposition rates (0, 3, 6, and 12 kg N hayr), along with the relationship between leaf phenotypic plasticity and integration were investigated in a subtropical montane forest.

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  • Source-specific risk assessment for soil heavy metals (HMs) in coal-mining areas is essential for pollution management and risk control.
  • An integrated analysis involving thirty soil samples from a coal-mining city in central China revealed moderate pollution levels, primarily from cadmium (Cd) and mercury (Hg), traced back to four main sources: traffic emissions, industrial activities, agricultural practices, and natural sources.
  • While non-carcinogenic risks were within safe limits for adults and children, identified carcinogenic risks posed a concern, particularly due to contaminants from traffic and natural sources like arsenic (As) and nickel (Ni), indicating a need for proactive risk mitigation strategies.
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  • A meta-analysis of 30 studies found that sulfur amendments significantly increase the phytoextraction of certain heavy metals, with cadmium, chromium, and nickel uptake increasing 1.6 to 12.6 times, while copper uptake decreased by 0.3 times.
  • Plant parts show varied responses to sulfur; leaves and roots absorb more heavy metals than grains and husks, and environmental conditions, such as pH, significantly influence uptake efficiency.
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The growing global need for latex is driving rubber plantation (RP) expansion since the last century, with >2 Mha of cultivation area being established in the last decade. Southeast Asia is the hotspot for rubber cultivation at other land-use costs. Although rubber cultivation has improved the economic status of farmers, it has altered the habitat's ecology and ecosystem functions (EF).

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Land degradation is a global problem caused by improper agricultural practices. In tropical China, the rubber (Hevea brasiliensis) plantations are predominantly practiced on forest-cleared lands, considering their sustainable land management potential compared to annual cropping. However, all rubber plantations may not have similar land management capacity.

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Bald patches (BPs) are known to accelerate and simultaneously mitigate the process of desertification. However, the mechanisms of these two synchronous actions are little studied in high desert and cold systems; and the incidence of BPs on alpine meadows degradation in Qinghai-Tibetan Plateau (QTP) of China is still unavailable. This study first aims to investigate the soil properties and the erodibility of the system BPs-VPs at the Beiluhe basin in QTP.

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Elemental sulfur is intensively used to control weeds and rubber leaf diseases. However, the mechanisms contributing to elemental sulfur dissipation and decay (hereafter decay) in rubber agroforestry remains unclear. This study relates hydrological processes such as runoff and soil loss to the changes in soil total sulfur (S) and sulfate (S-SO) in typical hillslope rubber agroforestry intercropped with cocoa in Xishuangbanna.

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  • This study investigates how four different phthalate esters (PAEs) behave in sandy aquifers using column experiments to understand their transport and sorption dynamics for better groundwater pollution management.
  • The researchers used HYDRUS-1D software to model transport curves, finding that two-site sorption models (LFO and NFO) provided the best fits, revealing unexpected transport patterns of PAEs based on their carbon chain lengths.
  • The results showed shorter carbon chain PAEs (DMP and DEP) migrated less distance compared to longer chain PAEs (DBP and DiBP) due to differences in how these compounds interact with available sorption sites in the soil.
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The present paper aims to evaluate the carbon isotopic fractionation of phthalate esters (PAEs) during transport in an sandy aquifer. Breakthrough curves of di-methyl phthalate (DMP), di-ethyl phthalate (DEP), and di-n-butyl phthalate (DBP) in mixed solution were determined by miscible displacement experiment, and simulated using HYDRUS-1D software. The stable carbon isotopes (δ(13)C) of 3 PAEs in effluent were analyzed at different times.

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The present paper aims to study the transport behavior of bisphenol-A (BPA) in sandy aquifer so as to provide important parameters for the prediction and control of contaminant plume in aquifer. Miscible displacement experiments were conducted and the breakthrough curves (BTCs) were simulated using HYDRUS-1D software. The effects of pore-water velocity (10-52 cm h(-1)) and initial concentration (2.

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