Related Manuals for Hanna Instruments HI 3896
Summary of Contents for Hanna Instruments HI 3896
- Page 1 HI 3896 HANNA Soiltest Soil Test Handbook Soil Science and Management w w w . h a n n a i n s t . c o m...
- Page 2 SOIL AND PLANT LIFE .................... 3 Allow the tube to stand for at least 5 minutes. The clearer the extract becomes the Index better. However, some cloudiness will not affect the accuracy of the test. PHYSICAL STRUCTURE ................... 4 CHEMICAL COMPOSITION ..................5 •...
- Page 3 4) Depth of extraction: Soil is very important for the plants. It is not merely a support system, but a complex world SOIL AND PLANT LIFE General: dig and discard the 5 cm (2") of topsoil from which the roots obtain water and other required elements. In addition, soil is For lawns: take the sample at a depth of 5 to 15 cm (from 2"...
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Page 4: Physical Structure
The physical structure of the soil depends on the dimension of the particles of its make up Tab. 7. PHYSICAL STRUCTURE CROP SOIL CONTENT ADVISED DOSES (kg/ha) (Tab. 1). In addition, the particles also differ based on their shape and volumic mass (mass per unit of volume) Apple very low... - Page 5 Tab. 7. Porosity is important for the exchange of gases and liquids. Micro-porosity (porous < 2 - CROP SOIL CONTENT ADVISED DOSES (kg/ha) 10 µm) permits water to be retained while macro-porosity (porous > 10 µm) contrib- utes to a fast circulation of air and water. Asparagus very low Plants therefore are in need of a correct relationship between micro and macro porosity.
- Page 6 For example, fungi prefer acidic conditions whereas most bacteria, especially those put- Tab.6. CROP YIELD Nitrogen Phosphorus Potassium ting nutrients at the plants’ disposition, have a preference for moderately acidic or slightly (q/ha) N (kg/ha) (kg/ha) O (kg/ha) alkaline soils. In fact, in strongly acidic conditions, nitrogen fixing and the mineralization Garlic of vegetable residual is reduced.
- Page 7 It is important to note that whereas an insufficient dose of nutrients decreases the potential Once the pH value is known, it is advisable to choose crops that are indicated for this range Management of the crop production, an excess can have a negative effect on the physiology of the plants and (e.g.
- Page 8 Tab.4. Range of preferred The three elements that are most needed by plants are nitrogen (N), phosphorus (P) and Nutrients PLANTS PLANTS potassium (K). This is the reason why they are called macronutrients and should be given GARDEN PLANTS AND FLOWERS ORCHARD to the plants.