Le bananier est exposé à de nombreux problèmes entre autres la salinité excessive des sols et des eaux d’irrigation qui entraînent une chute de sa productivité. Cet essai a été conduit en vue d’évaluer les effets de la salinité sur le comportement du bananier et la diversité de la coloration des champignons dans ce sol. L’essai a été installé sous serre suivant un dispositif complètement randomisé à 3 répétitions. Deux cultivars de bananier (Pelipita ABB et Planta...
Ce travail a été initié dans l’objectif d’évaluer les effets des doses croissantes de la matière organique sur le comportement du bananier soumis à différents niveaux de salinité. L’essai a été conduit sous serre suivant un dispositif complètement randomisé à 3 répétitions. Les traitements comprenaient 3 doses d’amendements organiques (0, 1 et 2 kg) et 5 doses de sel (0 ; 2,5 ; 5 ; 7,5 et 10 g/L). Les résultats montrent que les fortes doses de sels (plus de 5g) ont eu ...
Improving soil fertility through organic fertilizers application has become a major factor that has enabled the world to feed billions of people. However, the required quantities of organic material are enormous, so it becomes necessary to combine different types of fertilizers to feed plants. The objective of this study was to evaluate the effects generated by the integration of human faeces to mineral fertilizers by bringing them to okra (Abelmoschus esculentus) crop. The trial was ins...
Soils of sub-saharan countries have low inherent fertility, this deficiency is main factor determining agricultural production. Most of previous studies showed beneficial effects of organic matter in improving physical and chemical properties of soil and increasing yields. However, it remains unclear about when and how to spread the organic matter to get maximum nutrients for plants. This study was conducted in conditions of Lubumbashi to determine the influence of spreading modes and mo...
One of the most important challenges to continuously maximize crop production on limited areas of agricultural land is to maintain or enhance soil fertility. Organic fertilizer application is needed to replace nutrient removed by crop from the fields in order to restore crop production potential of a soil. But application of organic fertilizer alone insufficiently increases crop yield per area because the nutrient content of organic fertilizer is unbalanced. A trial was conducted in the ...
La fixation symbiotique d’azote est un atout majeur des légumineuses pour substituer aux engrais chimiques surtout pour les cultures exigeantes en azote comme le maïs. Le coût élevé des engrais minéraux limite leur utilisation pour les paysans qui pratique une agriculture de subsistance. De plus, ces engrais chimiques généralement utilisés acidifient les sols. Ainsi, cette étude a été initiée en vue d’évaluer les potentialités des faibles doses des biomasses à base de ...
ABSTRACT: This study was carried out in Udi, Udenu and Nsukka Local Government Areas, in Enugu state. The effects of liquid wastes from automobile workshops on some selected soil properties of the study area were investigated. Auger samples were collected at two depths, (surface, 0- 20cm) and (subsurface, 20- 40cm) of automobile wastes contaminated sites and 100m away for uncontaminated sites. Core samples were collected from both soils and surface samples were again collected for planting m...
ABSTRACT The microbiological and organic pollutants characteristics of Owena dam in Ifedore local government area of Ondo-state, Nigeria was carried out, nine water samples were collected from three different parts of the downstream side, which include; around the waste disposal site, community settlement and farm environment. The microorganisms isolated were escherichia coli, enterobacter species, staphylococcus aureus, proteus spec...
v ABSTRACT The project evaluates the effectiveness of quality control in Dangote Cement PLC, Ibese Ogun State, Nigeria. Limestone, shale and laterite samples were from the mines to determine their right grade as well as their mixing proportion. Also samples were taken from kiln feed and the final stage of cement production. The compressive strength of the cubes is determined according to the ages of the cubes which is 2 days, 7 days and 28 days while the d...
ABSTRACT The kinetics and optimization of inhibitive action of leaves extract of pawpaw, Azadirachta indica (neem tree) and bitter leaf on corrosion of mild steel in acidic medium was studied by weight loss technique using central composite design of response surface methodology for optimization. The metal was analyzed using Atomic Absorption Spectrophotometer to determine its elemental compositions. The extract was obtained by liquid extraction using ethanol and was analyzed to determine ...
Abstract: The study used Onion (Allium Cepa), Garlic (Allium Sativum L.) and Sour Orange (Citrus Aurantium) to assess their effectiveness as bio- pesticides. The study also revealed that plants play vital roles towards the storage of many food stuffs. The consideration for the used extracts of plants origin is that they were easily biodegradable, effective on some pests and considered safer in pest control operations as they minimized pesticide residues and also ensured safety of the consu...
ABSTRACT The Project work presents an Optimum design of welded plate girder. A simply supported plate girder with span of 15meters was chosen for the case study. The girder was subjected to a self-weight of 50KN/m and concentrated loads of 1000KN at 5m and 10m from the left support. The plate girder was analysed to get the design moments and shear forces. An initial manual design was carried out for the plate girder in accordance with BS 5950-2000. From the design, initial section parameters ...
The study aimed at identifying animal manure which influences soil health indicators (microbial abundance), was conducted at Lilongwe university of Agriculture and Natural Resources (LUANAR) crop and soil science student farm. The experiment had four treatments; cattle manure., goat manure,pig manure and chicken Manuel. Treatments were arranged in RCB replicated three times. The ANOVA shows that there was significant difference (p