2014 AGRICULTURE MOST EXPECTED WAEC SPECIMEN PRACTICAL SPECIMEN. -SPECIMEN A [SANDY SOIL] -It contains gravel coarse sand fine sand and limited amount of silt Characteristics of specimen A 1-it is grey and brownish in colour. 2-its particles are large . 3-it has lower water retention capacity 4-it is not pliable or plastic so it can not form structure. 5-it has large pore spaces and therefore are wild aerated Economic importance of specimen A. 1.easy to work on or plough upon. 2.easily washed away or leached 3.prevents waters lodging 4.easily heat up 5.well aerated 6.has low PH value hence likely acidic 7.support growth of water SPECIMEN B [LOAMY SOIL] -It contains fair balance of clay silt and sand particles. CHARACTERISTICS OF SPECIMEN B. 1.it is dark brown or black in colour 2.it is not as coarse as sand nor as smooth as clay 3.it has moderate speed pore space 4.it contains organic matters or residue 5.the rate of water percolation is moderate ECONOMICS IMPORTANCE OF SPECIMEN B. 1. Moderate water absorbing and holding capacity 2.it contains organic matter which is source of plant nutrients when decomposed 3.easy to work or plough upon 4.does not easily loose its nutrients through leaching 5.well aerated for root respiration and development. 6.best soil for crop cultivation example maize rice cassava okro tomato and millet SPECIMEN C [CLAY SOIL] The particles are predominated by clay consisting of about 60%. CHARACTERISTICS OF SPECIMEN C 1.it contains small fine poudry compact particles. 2.it is smooth and velvet 3.the pore space hence not well aerated 4.has low water retention. 5.grey or brownish in colour 6.friable or plastic or easy to mould ECONOMIC IMPORTANCE OF SPECIMEN C 1.difficult to work on or plough 2.poorly aerated 3.easily lodged by water. 4.not easily leached 5.not easily heated 6.supports growth DIFFERENCE BETWEEN SPECIMEN A AND C 1.SPECIMEN A has large particles or coarsed Texture ----- SPECIMEN C has small particles or fine Texture 2. SPECIMEN A is well aerated ------- SPECIMEN C is poorly aerated 3. SPECIMEN A is easy to plough ------- SPECIMEN C Is difficult to plough 4. SPECIMEN A Forms no structure ------ SPECIMEN Forms aggregate Or lumps 5. SPECIMEN A is a Warmer Soil --------- SPECIMEN C is a Cooler Soil 6. SPECIMEN A has poor water retention --------- SPECIMEN C has water retention SPECIMEN D [PEBBLE OR SANDBSTONE] It is a sedimentary rock formed by settling of sediments SETTLING OF SEDIMENTS. The sediment are deposited in layers by agents like flowing water wind and Ice CHARACTERISTICS OF SPECIMEN D. 1.It Appears in layers 2.It has coarse texture 3.Presence Of Irregular fracture 4.Loosed Binding particles 5.Soft & Easily Breaked When Slight force is applied. SPECIMEN E [GRANITE] It is an igneous rock formed by molten magma. (SOLIDIFICATION) from beneath the earth crust. It is the oldest known rock CHARACTERISTICS OF SPECIMEN E. 1.shiny in appearance 2. Light Dark in Colour. 3. Coarsely crystalline in appearance 4.Has firmed binding particles 5. Extremely hard & Required a greater force to break SPECIMEN F [MARBLE] It is a metamorphic rock formed from igneous and sedimentary rock which as a result of subjection to Intensive heat & Pressure hence change its former state by process of metamorphism, Chalk and Lime stone are changed to marble CHARACTERISTICS OF SPECIMEN F 1.Hard and do not break easily. 2.Shiny in appearance 3.Multi Coloured 4.Granular Texture 5.Crystalline Shape SPECIMEN G [LITMUS PAPER (BLUE AND RED)] It is a common indicator used to determine the acidity or alkalinenity of soil (Soil PH) CHARACTERISTICS OF SPECIMEN G 1. Blue litmus paper turns red in acid 2.Red litmus paper turns red alkali 3. Litmus paper turns purple when neutral SPECIMEN H [DILUTE HYDROCHLORIC ACID (HCL)] It is an inorganic acid made of hydrogen and chlorin
Posted on: Mon, 10 Mar 2014 11:26:47 +0000
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