Výsledky vyhledávání - "John O. Agbenin"

Charge Distribution and the Interactive Effect of pH and Ionic Strength on Phosphate Adsorption Properties of Two Benchmark Soils from Botswana

Autor: John O. Agbenin, Larona Modisaemang

Publikováno v: Communications in Soil Science and Plant Analysis. 46:2821-2836

The constraint imposed by phosphate (PO4) deficiency on soil fertility in Botswana necessitated the study of ionic strength (μ) and pH effects on electric charge distribution and PO4 adsorption of two representative soils: Typic Pellustert and Typic

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::07bfa92e84e449bcf315359afb59a491
https://doi.org/10.1080/00103624.2015.1103251

Zobrazit plný text záznamu

Calcium-Ammonium Selectivity of Two Benchmark Soils from Botswana as Assessed by Competing Semi-empirical Ion Exchange Equations

Autor: Larona Modisaemang, John O. Agbenin

Publikováno v: Communications in Soil Science and Plant Analysis. 46:2757-2773

The effectiveness of lime-ammonium-nitrate (LAN) as a nitrogen (N) fertilizer in weathered soils depends on the respective selectivity for ammonium (NH4) and calcium (Ca) by the soils. The study assessed Ca2+/NH4+ exchange selectivity of two benchmar

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::77e39a3d7cd335a74642a717e5859677
https://doi.org/10.1080/00103624.2015.1102929

Zobrazit plný text záznamu

The basaltic soils of Plateau State, Nigeria: Properties, classification and management practices

Autor: John O. Agbenin, B. A. Raji, A. M. Hassan, W. B. Malgwi

Publikováno v: Journal of Soil Science and Environmental Management. 6:1-8

Characterization of soils is helpful in the appraisal of soil productivity. The study investigated detailed physico-chemical characterize of the soils developed on basaltic parent materials on the Jos plateau, Nigeria. The aim was to assess appropria

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a058fe369f2bed2faad661b8769eb5e9
https://doi.org/10.5897/jssem12.026

Zobrazit plný text záznamu

NUTRIENT BALANCES AND ECONOMIC PERFORMANCE IN URBAN AND PERI-URBAN VEGETABLE PRODUCTION SYSTEMS OF THREE WEST AFRICAN CITIES

Autor: A. Abdulkadir, John O. Agbenin, Hamadoun Amadou, Sheick Sangaré

Publikováno v: Experimental Agriculture. 51:126-150

SUMMARYUrban and peri-urban (UPA) cultivation supplies fresh vegetables and employment for the increasing number of urban inhabitants. It is characterized by the use of large nutrient inputs to increase productivity and often associated with negative

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::18028742534a8f4756bfdb62272244b2
https://doi.org/10.1017/s0014479714000180

Zobrazit plný text záznamu

Suitability of Urban Wastes for Crop Production in Zaria, Northern Nigeria: Bioavailability, Phytotoxicity, and Fractions of Micronutrients

Autor: John O. Agbenin, Sabastine Ugbemuna Ugbaje

Publikováno v: Communications in Soil Science and Plant Analysis. 44:2720-2733

The suitability of two composted solid urban wastes for crop production was evaluated in a pot experiment with sorghum (Sorghum bicolor) that focused on the geochemical fractions, bioavailability, and phytotoxicity of copper (Cu), manganese (Mn), and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::605b350d8164734e549223269430e1e1
https://doi.org/10.1080/00103624.2013.813033

Zobrazit plný text záznamu

Potassium→ammonium exchange of two benchmark soils from Botswana and its implication for nitrogen economy of the soils

Autor: John O. Agbenin, Larona Modisaemang

Publikováno v: Archives of Agronomy and Soil Science. 60:827-840

Ion exchange preferences for NH4+ and K+ by soil exchanger surface can greatly affect the NO3− leaching into groundwater and nitrogen-use efficiency in agricultural production. Since NH4+ and K+ salts are usually applied together as fertilizers, th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::40579f470214d8668cef880e53af4ca3
https://doi.org/10.1080/03650340.2013.837220

Zobrazit plný text záznamu

Field assessment of cadmium, lead and zinc contamination of soils and leaf vegetables under urban and peri-urban agriculture in northern Nigeria

Autor: John O. Agbenin, Gloria N. Egwu

Publikováno v: Archives of Agronomy and Soil Science. 59:875-887

Urban and peri-urban agriculture in dry semi-arid northern Nigeria relies on untreated wastewater for all-year irrigation and the production of vegetables for urban markets. Human and animal exposure to potentially toxic metals is attributed to the c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1bd48b1c683b3958594589c63358b84d
https://doi.org/10.1080/03650340.2012.685467

Zobrazit plný text záznamu

The profile distribution of Zn and the Zn2+-pH isotherms of savanna alfisols irrigated with untreated wastewater in Northern Nigeria

Autor: Gloria N. Egwu, John O. Agbenin

Publikováno v: Chemical Speciation & Bioavailability. 25:97-105

The distribution of total and labile Zn, and the Zn2+-pH isotherms of arable urban fields were evaluated to determine the fate of Zn under long-term Zn loading from untreated wastewater irrigation. At the three sites, total Zn concentration in the su

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::55179643aff41297a20408d11c574bf5
https://doi.org/10.3184/095422913x13693187852633

Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání