Poor drainage

Flood Heavy rainfall, soil has poor drainage system... 

Drainage The presence of clay or sand, more clay means poor drainage... 

The bacteria that cause this disease overwinter in potato tubers, plant debris and soil. Tubers are invaded through damaged skin. Poor drainage, potassium deficiency, or excess nitrogen exacerbate the condition. 

Cationic starch is mainly adsorbed by the small fiber fractions and filler particles, according to their high specific surface. At low cationic starch levels (0.5%), only the small fiber fraction is saturated and rendered cationic a mosaic system is established which results in small flocks and good retention, but poor drainage. Increasing the... 

Some inland marshes and small inner wetlands are also salty and have poor drainage. As a result, they accumulate salts in drought periods, which may... 

All peonies are beautiful and easy to grow. They will grow outdoors in Canada and all of the United States, although they will not thrive in subtropical sections of the southern states. Peonies do not like shade or poor drainage soils and they have very few problems with disease or pests. Many hybrids are produced, both naturally and artificially. 

Leaves yellow plant wilts stems, crowns, or roots water-soaked and rotted. Cause Stem, crown, or root rot. These diseases are often due to poor drainage or overwatering. Destroy infected plants or plant parts. Thin plants to increase air movement and reduce moisture around plants. Spray with a copper fungicide if weather is warm and wet and disease is severe. Plant in well-drained soil or in raised beds. 

Gley. Soil developed under reducing conditions as a result of poor drainage, characterized by a gray and mottled coloration. 

Hydromorphic. Developed under conditions of excess moisture. Hydro-morphic soils are found under conditions of poor drainage in marshes, swamps, seepage areas, or flats. 

Smectite clays such as montmorillonite are favored by relatively poor drainage, alkaline pH s, high concentrations of silica and divalent cations, and low potassium concentrations. They tend to form early in the weathering of unstable Fe-, Mg-, and Ca-rich minerals in igneous or metamorphic rocks. 

In semiarid climates, sulfate deposits in the soil are sometimes reduced under conditions of poor drainage. The conditions necessary for reduction are created in natural basins where water accumulates due to the very low water permeability of sodic soils. The sulfate reduction reaction ... 

Molybdenum is most commonly deficient in coarse-textured acid soils and low-humus soils. Plant toxicity is associated with poor drainage and alkaline, calcareous, clayey, or peaty soils. 

Antimony is a common pollutant of soils in industrial and mining sites. Its mobility in soils is rated as medium, with reducing conditions associated with poor drainage probably lessening mobility. 

High Se levels are often associated with poorly drained sites, and yet, as described above, Se solubility is generally low under reducing conditions. Poor drainage allows dissolved Se salts to accumulate at the surface by evaporation of water. 

Fragipans are common indicators of poor drainage. A fragipan is a loamy, brittle, subsurface horizon that is low in porosity, organic-matter content, and clay content, but high in silt or fine sand. Fragipans can, but do not necessarily, occur in the presence of plinthite. Where they occur, fragipans can create a perched water table (16, 20. 

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