Determination of the texture in the field is done by 1) the period of dry or moist soil is wetted, then dipirid between the thumb and forefinger so memebntuk ribbon moist, as he felt a sense of rough, slippery and sticky; 2) the land made the ball, rolled up and observed their resistance to compression and adhesion Masaa ground when stretched between thumb and forefinger. From a sense of rough, slick, slippery, pirisan, rolls and attachment to it can be determined class airy texture.
Figure 1.10. Determining Soil Texture with Method Feelings
Through the comparison of the three flavors soil texture can be roughly estimated, for example, feel the skin senses particles:
2) If it feels rough clear, little attached, and can be formed but easy once the ball is destroyed, then the land is classified as argillaceous sand textured.
7) If it feels a bit slippery, somewhat attached, can be shaped ball rather firm, and can be formed rolls rather easily destroyed, then the land is classified as clayey loam texture.
Figure 1:16. Texture Clay clayey
8) If it feels smooth with a little part of a bit rough, somewhat attached, can be shaped ball rather firm, and can be formed rolls easily destroyed, then the land is classified as sandy clay loam texture.
Figure 1.17. Texture Clay Sandy Clay
9) If it feels fine, feels a bit slippery, attached, and can be molded ball firmly, and can be formed rolls with shiny surfaces, then the land is classified as clay loam textured dusty.
Figure 1:18. Texture Clay Clay Dust
The determination according to the method of this feeling will be better if for each point of observation is done several times, a minimum of three times (three replicates). Soil texture affect the growth and production of crops, the results of research on the influence of soil texture on maize and potatoes are listed in Table 1.3. Table 1.3 shows that the ideal corn grown on clay soils, whereas the ideal potato in sandy loam soil texture of the soil textured clay and argillaceous sand.
But both ideal growing on sand-textured soil if accompanied by irrigation. In the condition without irrigation, clay gives physical properties are both as described previously, so that the root system to grow freely. Bertesktur sandy loam soil is better than clay texture associated with the potato crop needs space for extension and enlargement of the tuber.