Soil Test HandbookSoil Scienceand ManagementHI 3896HANNA SoiltestMAN3896R3 07/04www.hannainst.com
2SOIL AND PLANT LIFE ... 3PHYSICAL STRUCTURE...
3Soil is very important for the plants. It is not merely a support system, but a complex worldfrom which the roots obtain water and other required ele
4The physical structure of the soil depends on the dimension of the particles of its make up(Tab. 1). In addition, the particles also differ based on
5Porosity is important for the exchange of gases and liquids. Micro-porosity (porous < 2 -10 µm) permits water to be retained while macro-porosity
6For example, fungi prefer acidic conditions whereas most bacteria, especially those put-ting nutrients at the plants’ disposition, have a preference
7Once the pH value is known, it is advisable to choose crops that are indicated for this range(e.g. in an acid soil, cultivate rice, potato, strawberr
8PLANTS pHORCHARDApple 5-6.5Apricot 6-7Cherry 6-7.5Grapefruit 6-7.5Grapevine 6-7Lemon 6-7Nectarine 6-7.5Orange 5-7Peach 6-7.5Pear 6-7.5Plum 6-7.5Pomeg
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