SOIL TEXTURE
Soil texture is a classification instrumental used both in the field and laboratory to determine soil classes based on their physical texture. Soil texture can be determine using qualitative methods such as texture by feel, and quantitative methods such as the hydrometer method.
Texture is important because it influences: the amount of water the soil can hold the rate of water movement through the soil how workable and fertile the soil is. For example, sand is well aerated but does not hold much water and is low in nutrients. Clay soils generally hold more water, and are better at supplying nutrients.
Soil texture (such as loam, sandy loam or clay) refers to the proportion of sand, silt and clay sized particles that make up the mineral fraction of the soil. For example, light soil refers to a soil high in sand relative to clay, while heavy soils are made up largely of clay.
Texture often changes with depth so roots have to cope with different conditions as they penetrate the soil. A soil can be classified according to the way the texture changes with depth. The 3 profile types are: uniform-same texture throughout the soil profile texture-contrast-abrupt texture change between the topsoil and subsoil gradational-texture gradually increases down the soil profile.
1. Take about 2 tablespoons of soil in one hand and add water, drop by drop, while working the soil until it reaches a sticky consistency.
2. Squeeze the wetted soil between thumb and forefinger to form a flat ribbon.
3. Determine the texture based on the length of the ribbon that can be formed without breaking-see following table.
What is seedling? A seedling is a young plant sporophyte developing out of plant embryo from a seed. Seedling development starts with germination of the seed. The typical young seedling consists of the three main parts: the radicle (embryonic root), the hypocotyl (embryonic shoot), and the cotyledons (seed leaves). The two classes of flowering plants (angiosperms) are distinguished by their number of seed leaves: monocotyledons (monocots) have one blade-shapes cotyledons, whereas dicotyledons (dicots) possess two round cotyledons .gymnosperm are more varied.
1. Tomatoes
2. Corn
3. Carrot
4. Potatoes
5. Spinach
1. Cabbage
2. Snap beans
3. Lettuce
4. Chard
5. Broccoli e.t.c
1. Okra
2. Cucumber
3. Onions
4. Green beans
5. Pepper
1. Cotton
2. Sugarcane
3. Tobbaco
4. Wheat
5. Oil Seeds
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