Soils: An Introduction to Soils and Plant GrowthSoils: an essential world resource; Parent materials and soil formation, soil genesis; Physical properties of soils; Soil water; Chemical and colloidal properties; Soils and plant nutrition; Soil organic matter; Soil ecology and environmental quality; Fertilizers and their use; Soil diagnosis; Acid soils and lime; Saline and sodic soils and their reclamation; Organic amendaments and recycling of wastes; Tillage; Soil conservation and management; Water quality and irrigation; Drainage systems; Soils classification; Soil surveys, interpretations, and use planning; Soils of the humid tropics and subtropics; Soil requiring unusual management; Soils, food production,a nd world population. |
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Page 201
... sample to be analyzed should be representative of the area . Lime and fertilizer recommendations can- not be made accurately when the soil sample does not represent the field . In general , for most field crops , soil should be sampled ...
... sample to be analyzed should be representative of the area . Lime and fertilizer recommendations can- not be made accurately when the soil sample does not represent the field . In general , for most field crops , soil should be sampled ...
Page 216
... sample an adjacent area of " good " soils for comparison . How to sample : 1 Potted plants : sample soil from top to bottom of several pots . 2 Bedding plants : sample to depth of flat or container . 48D . D. Warncke , " Greenhouse Soil ...
... sample an adjacent area of " good " soils for comparison . How to sample : 1 Potted plants : sample soil from top to bottom of several pots . 2 Bedding plants : sample to depth of flat or container . 48D . D. Warncke , " Greenhouse Soil ...
Page 225
... samples To prevent spoilage of the plant material , it is important that the sample be air- dried for at least one day prior to mailing in the container supplied by the laboratory . Samples should not be mailed in polyethylene bags or ...
... samples To prevent spoilage of the plant material , it is important that the sample be air- dried for at least one day prior to mailing in the container supplied by the laboratory . Samples should not be mailed in polyethylene bags or ...
Common terms and phrases
absorbed acid soils acre Agricultural alkaline aluminum ammonia ammonium amount areas available water bacteria boron bulk density calcium carbon cation exchange capacity chemical clay loam colloids color corn crop decompose decomposition deficiency deposits developed diameter drainage elements erosion exchange sites fertilizer field capacity horizons humid humus hydrogen inches increase ions iron irrigation kaolinite kg/ha layers leaching lime loam magnesium manganese micronutrients minerals molybdenum montmorillonite mulch nitrate nitrogen nutrients occur organic matter oxides oxygen parent material peds percent percentage phosphate phosphorus plant growth plant nutrients plant roots pore space potassium pounds rainfall residues rock salt sample sand sesquioxides silt sodium soil depth soil formation soil moisture soil pH Soil Science soil structure soil surface soil test soil texture soil water soil's soluble solution Source strongly acid suction sulfate sulfur tensiometers textural class tillage USDA-Soil Conservation Service vegetation weathering wilting yields zinc